https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/

The problem as I see it is that 3D printing is not a process without errors. It can very easily have voids and weak spots.

If you had the idea of using the AI for designing the lightest possible part supposedly with the highest strength per weight ratios, what does it matter? Most of the bikes in the Tour will be too light for the rules and have to carry compensating weights.

If the UCI, like expected, eliminates the weight limits it would probably be the end of high end cycling because it would be like lighting a fuse on a stick of dynamite. Anyone that is close to it will be injured by the flying debris.

On 5/27/2021 5:01 PM, Tom Kunich wrote:
> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>
> The problem as I see it is that 3D printing is not a process without errors. It can very easily have voids and weak spots.
>
> If you had the idea of using the AI for designing the lightest possible part supposedly with the highest strength per weight ratios, what does it matter? Most of the bikes in the Tour will be too light for the rules and have to carry compensating weights.
>
> If the UCI, like expected, eliminates the weight limits it would probably be the end of high end cycling because it would be like lighting a fuse on a stick of dynamite. Anyone that is close to it will be injured by the flying debris.
>

Yes and no.

Many 3D print pieces do have some severe limits where
strength, torsional resistance or pressure matter. But
sintered pieces from 3D metal powder are failry well known
and of a different class. I don't know but it could well be
adequate and reliable.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

On Thursday, May 27, 2021 at 3:09:30 PM UTC-7, AMuzi wrote:
> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> >> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> >
> > The problem as I see it is that 3D printing is not a process without errors. It can very easily have voids and weak spots.
> >
> > If you had the idea of using the AI for designing the lightest possible part supposedly with the highest strength per weight ratios, what does it matter? Most of the bikes in the Tour will be too light for the rules and have to carry compensating weights.
> >
> > If the UCI, like expected, eliminates the weight limits it would probably be the end of high end cycling because it would be like lighting a fuse on a stick of dynamite. Anyone that is close to it will be injured by the flying debris.
> >
> Yes and no.
>
> Many 3D print pieces do have some severe limits where
> strength, torsional resistance or pressure matter. But
> sintered pieces from 3D metal powder are failry well known
> and of a different class. I don't know but it could well be
> adequate and reliable.

https://3dprinterly.com/are-3d-printed-parts-strong/

On Thursday, May 27, 2021 at 5:54:44 PM UTC-5, cycl...@gmail.com wrote:
> https://3dprinterly.com/are-3d-printed-parts-strong/
Thanks for the interesting article. I had my broken ankle screwed back together with screws made of polylactic acid ("PLA") three years ago. I expect they were 3-D printed. Not only were they strong enough for the job, but they were resorbed after the joint ("tibio-fibular syndesmosis", if you *must* know!) healed. So no second surgery to remove them!

On 5/27/2021 4:07 PM, AMuzi wrote:
> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/

Pretty wild looking! A few things I wonder about:

Exactly what loads did they use for inputs to the software? Did the list
include forces from unplanned events, like crashing and loading the
crank sideways? Or how about something really random, like whacking your
crank against a rock, which might damage one of the strut members? I
could envision such a load bending a small strut and making the crank
look fine, but be far weaker.

I wonder what results they got for mass and stiffness, and how it
compared with more conventional cranks? Are the gains worth the cost and
complexity?

Will they put a skin over the crank to keep it from filling with mud?

And: It always seems to me that even normal loads on bike parts are
difficult to predict. They can even depend on design - for example, when
a mountain biker lands a big jump, the peak force will depend not only
on the jump and the mass and skill of the rider, but on the stiffness of
the suspension (if any) and the stiffness of the crank.

So how are they evaluating the prototypes, to validate the computer
data? Seems they'd need some experimental stress analysis - strain
gages, brittle coatings, etc. It's not simple.

But it's an interesting project.

--
- Frank Krygowski

On 5/27/2021 8:12 PM, Frank Krygowski wrote:
> On 5/27/2021 4:07 PM, AMuzi wrote:
>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>
>
> Pretty wild looking! A few things I wonder about:
>
> Exactly what loads did they use for inputs to the software?
> Did the list include forces from unplanned events, like
> crashing and loading the crank sideways? Or how about
> something really random, like whacking your crank against a
> rock, which might damage one of the strut members? I could
> envision such a load bending a small strut and making the
> crank look fine, but be far weaker.
>
> I wonder what results they got for mass and stiffness, and
> how it compared with more conventional cranks? Are the gains
> worth the cost and complexity?
>
> Will they put a skin over the crank to keep it from filling
> with mud?
>
> And: It always seems to me that even normal loads on bike
> parts are difficult to predict. They can even depend on
> design - for example, when a mountain biker lands a big
> jump, the peak force will depend not only on the jump and
> the mass and skill of the rider, but on the stiffness of the
> suspension (if any) and the stiffness of the crank.
>
> So how are they evaluating the prototypes, to validate the
> computer data? Seems they'd need some experimental stress
> analysis - strain gages, brittle coatings, etc. It's not
> simple.
>
> But it's an interesting project.
>

I, like you, have seen a lot of things and seen a lot of
things fail. I agree that modern 'modeling' seldom accounts
for real world outliers with relatively high probabilities.
Which is to say 'unexpected' describes the designer more
than the event.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

Frank Krygowski <frkrygow@sbcglobal.net> writes:

> Pretty wild looking!

Many topology optimization results look much wilder.

> Exactly what loads did they use for inputs to the software? Did the
> list include forces from unplanned events, like crashing and loading
> the crank sideways?

I cannot comment on SRAM, but I do know something about Trek:

https://www.3ds.com/fileadmin/PRODUCTS/SIMULIA/PDF/case-study/SIMULIA-trek.pdf

Adaptive manufacturing becomes really high-end once you start to
simulate the process itself (which you should, but I am biased, since I
am working for this company):

https://blogs.3ds.com/simulia/print-to-perform-overview-of-additive-manufacturing-on-the-3dexperience-platform/

Best regards

Axel

On Thursday, May 27, 2021 at 4:07:59 p.m. UTC-4, AMuzi wrote:
> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> --
> Andrew Muzi
> <www.yellowjersey.org/>
> Open every day since 1 April, 1971

That looks to be an accident waiting for a place to happen. To me it looks like a very weak design. I wonder too what'll happen when the bicycle goes over obstacles or if there's a twisting force on the crank.

Cheers

Am 28.05.2021 um 00:09 schrieb AMuzi:
> On 5/27/2021 5:01 PM, Tom Kunich wrote:
>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>>>
>>
>> The problem as I see it is that 3D printing is not a process without
>> errors. It can very easily have voids and weak spots.
>>
>> If you had the idea of using the AI for designing the lightest
>> possible part supposedly with the highest strength per weight ratios,
>> what does it matter? Most of the bikes in the Tour will be too light
>> for the rules and have to carry compensating weights.
>>
>> If the UCI, like expected, eliminates the weight limits it would
>> probably be the end of high end cycling because it would be like
>> lighting a fuse on a stick of dynamite. Anyone that is close to it
>> will be injured by the flying debris.
>>
>
> Yes and no.
>
> Many 3D print pieces do have some severe limits where strength,
> torsional resistance or pressure matter. But sintered pieces from 3D
> metal powder are failry well known and of a different class. I don't
> know but it could well be adequate and reliable.

I've read somewhere that the aricraft industry is using 3-D printed
Titanium joints which weigh about half as much but are double as strong
as the previous generation of joints.

Rolf

On 5/28/2021 3:12 AM, Sir Ridesalot wrote:
> On Thursday, May 27, 2021 at 4:07:59 p.m. UTC-4, AMuzi wrote:
>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/

>
> That looks to be an accident waiting for a place to happen. To me it looks like a very weak design. I wonder too what'll happen when the bicycle goes over obstacles or if there's a twisting force on the crank.
>
> Cheers

> "I wonder too what'll happen..."

http://www.yellowjersey.org/photosfromthepast/CRANKMD9.JPG

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> Am 28.05.2021 um 00:09 schrieb AMuzi:
>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>>>>
>>>
>>> The problem as I see it is that 3D printing is not a
>>> process without errors. It can very easily have voids and
>>> weak spots.
>>>
>>> If you had the idea of using the AI for designing the
>>> lightest possible part supposedly with the highest
>>> strength per weight ratios, what does it matter? Most of
>>> the bikes in the Tour will be too light for the rules and
>>> have to carry compensating weights.
>>>
>>> If the UCI, like expected, eliminates the weight limits
>>> it would probably be the end of high end cycling because
>>> it would be like lighting a fuse on a stick of dynamite.
>>> Anyone that is close to it will be injured by the flying
>>> debris.
>>>
>>
>> Yes and no.
>>
>> Many 3D print pieces do have some severe limits where
>> strength, torsional resistance or pressure matter. But
>> sintered pieces from 3D metal powder are failry well known
>> and of a different class. I don't know but it could well
>> be adequate and reliable.
>
> I've read somewhere that the aricraft industry is using 3-D
> printed Titanium joints which weigh about half as much but
> are double as strong as the previous generation of joints.
>
> Rolf
>

+1

3D additive machining is much more than little plastic gizmos,

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

Sir Ridesalot <i_am_cycle_pathic@yahoo.ca> wrote:
> On Thursday, May 27, 2021 at 4:07:59 p.m. UTC-4, AMuzi wrote:
>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>>
>> --
>> Andrew Muzi
>> <www.yellowjersey.org/>
>> Open every day since 1 April, 1971
>
> That looks to be an accident waiting for a place to happen. To me it
> looks like a very weak design. I wonder too what'll happen when the
> bicycle goes over obstacles or if there's a twisting force on the crank.
>
> Cheers
>

On the other hand, if you chose to, you could keep the weight the same and
design a stronger crank using these methods.

On Friday, May 28, 2021 at 7:23:30 AM UTC-7, Ralph Barone wrote:
> Sir Ridesalot <i_am_cyc...@yahoo.ca> wrote:
> > On Thursday, May 27, 2021 at 4:07:59 p.m. UTC-4, AMuzi wrote:
> >> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> >>
> >> --
> >> Andrew Muzi
> >> <www.yellowjersey.org/>
> >> Open every day since 1 April, 1971
> >
> > That looks to be an accident waiting for a place to happen. To me it
> > looks like a very weak design. I wonder too what'll happen when the
> > bicycle goes over obstacles or if there's a twisting force on the crank..
> >
> > Cheers
> >
> On the other hand, if you chose to, you could keep the weight the same and
> design a stronger crank using these methods.
I think that the AI and 3D printing of stronger cranks is a perfectly valid way to model things so that you could use the vastly complex methods of casting such pieces.

When we were going through that business about the steel rotation limiter, I pulled an aluminum casting off of a cheaper Campy derailleur and tried it and it was too thick and could not work. But when I ordered another from Banford Bike, I ended up getting another aluminum casting. I wrote to them three times and never got an answer. I KNOW that they still make this steel piece because all of the 11 speed derailleurs use it. But eventually I tried the aluminum casting and it was indeed different and it appears to be able to work. So I installed it and hope that the Centaur derailleur doesn't fail again.

I could always install a Record derailleur if I get too nervous.

On 5/28/2021 9:01 AM, AMuzi wrote:
> On 5/28/2021 3:34 AM, Rolf Mantel wrote:
>> Am 28.05.2021 um 00:09 schrieb AMuzi:
>>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
>>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
>>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
>>>>>
>>>>>
>>>>
>>>> The problem as I see it is that 3D printing is not a
>>>> process without errors. It can very easily have voids and
>>>> weak spots.
>>>>
>>>> If you had the idea of using the AI for designing the
>>>> lightest possible part supposedly with the highest
>>>> strength per weight ratios, what does it matter? Most of
>>>> the bikes in the Tour will be too light for the rules and
>>>> have to carry compensating weights.
>>>>
>>>> If the UCI, like expected, eliminates the weight limits
>>>> it would probably be the end of high end cycling because
>>>> it would be like lighting a fuse on a stick of dynamite.
>>>> Anyone that is close to it will be injured by the flying
>>>> debris.
>>>>
>>>
>>> Yes and no.
>>>
>>> Many 3D print pieces do have some severe limits where
>>> strength, torsional resistance or pressure matter. But
>>> sintered pieces from 3D metal powder are failry well known
>>> and of a different class. I don't know but it could well
>>> be adequate and reliable.
>>
>> I've read somewhere that the aricraft industry is using 3-D
>> printed Titanium joints which weigh about half as much but
>> are double as strong as the previous generation of joints.
>>
>> Rolf
>>
>
> +1
>
> 3D additive machining is much more than little plastic gizmos,

Right. And some of the biggest development efforts occur about seven
miles from me. https://www.americamakes.us/

--
- Frank Krygowski

On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> On 5/28/2021 9:01 AM, AMuzi wrote:
> > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> >>>>>
> >>>>>
> >>>>
> >>>> The problem as I see it is that 3D printing is not a
> >>>> process without errors. It can very easily have voids and
> >>>> weak spots.
> >>>>
> >>>> If you had the idea of using the AI for designing the
> >>>> lightest possible part supposedly with the highest
> >>>> strength per weight ratios, what does it matter? Most of
> >>>> the bikes in the Tour will be too light for the rules and
> >>>> have to carry compensating weights.
> >>>>
> >>>> If the UCI, like expected, eliminates the weight limits
> >>>> it would probably be the end of high end cycling because
> >>>> it would be like lighting a fuse on a stick of dynamite.
> >>>> Anyone that is close to it will be injured by the flying
> >>>> debris.
> >>>>
> >>>
> >>> Yes and no.
> >>>
> >>> Many 3D print pieces do have some severe limits where
> >>> strength, torsional resistance or pressure matter. But
> >>> sintered pieces from 3D metal powder are failry well known
> >>> and of a different class. I don't know but it could well
> >>> be adequate and reliable.
> >>
> >> I've read somewhere that the aricraft industry is using 3-D
> >> printed Titanium joints which weigh about half as much but
> >> are double as strong as the previous generation of joints.
> >>
> >> Rolf
> >>
> >
> > +1
> >
> > 3D additive machining is much more than little plastic gizmos,
> Right. And some of the biggest development efforts occur about seven
> miles from me. https://www.americamakes.us/
>
>
> --
> - Frank Krygowski
I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!

https://fitprinters.com/best-4x6-photo-printers/

On Friday, 5 August 2022 at 12:22:56 UTC+5, Fit Printers wrote:
> On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > >>>>>
> > >>>>>
> > >>>>
> > >>>> The problem as I see it is that 3D printing is not a
> > >>>> process without errors. It can very easily have voids and
> > >>>> weak spots.
> > >>>>
> > >>>> If you had the idea of using the AI for designing the
> > >>>> lightest possible part supposedly with the highest
> > >>>> strength per weight ratios, what does it matter? Most of
> > >>>> the bikes in the Tour will be too light for the rules and
> > >>>> have to carry compensating weights.
> > >>>>
> > >>>> If the UCI, like expected, eliminates the weight limits
> > >>>> it would probably be the end of high end cycling because
> > >>>> it would be like lighting a fuse on a stick of dynamite.
> > >>>> Anyone that is close to it will be injured by the flying
> > >>>> debris.
> > >>>>
> > >>>
> > >>> Yes and no.
> > >>>
> > >>> Many 3D print pieces do have some severe limits where
> > >>> strength, torsional resistance or pressure matter. But
> > >>> sintered pieces from 3D metal powder are failry well known
> > >>> and of a different class. I don't know but it could well
> > >>> be adequate and reliable.
> > >>
> > >> I've read somewhere that the aricraft industry is using 3-D
> > >> printed Titanium joints which weigh about half as much but
> > >> are double as strong as the previous generation of joints.
> > >>
> > >> Rolf
> > >>
> > >
> > > +1
> > >
> > > 3D additive machining is much more than little plastic gizmos,
> > Right. And some of the biggest development efforts occur about seven
> > miles from me. https://www.americamakes.us/
> >
> >
> > --
> > - Frank Krygowski
> I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
>
> https://rediyart.com/best-printer-for-stickers/

On Wednesday, October 5, 2022 at 4:10:07 PM UTC+6, Lucyharper wrote:
> On Friday, 5 August 2022 at 12:22:56 UTC+5, Fit Printers wrote:
> > On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > > >>>>>
> > > >>>>>
> > > >>>>
> > > >>>> The problem as I see it is that 3D printing is not a
> > > >>>> process without errors. It can very easily have voids and
> > > >>>> weak spots.
> > > >>>>
> > > >>>> If you had the idea of using the AI for designing the
> > > >>>> lightest possible part supposedly with the highest
> > > >>>> strength per weight ratios, what does it matter? Most of
> > > >>>> the bikes in the Tour will be too light for the rules and
> > > >>>> have to carry compensating weights.
> > > >>>>
> > > >>>> If the UCI, like expected, eliminates the weight limits
> > > >>>> it would probably be the end of high end cycling because
> > > >>>> it would be like lighting a fuse on a stick of dynamite.
> > > >>>> Anyone that is close to it will be injured by the flying
> > > >>>> debris.
> > > >>>>
> > > >>>
> > > >>> Yes and no.
> > > >>>
> > > >>> Many 3D print pieces do have some severe limits where
> > > >>> strength, torsional resistance or pressure matter. But
> > > >>> sintered pieces from 3D metal powder are failry well known
> > > >>> and of a different class. I don't know but it could well
> > > >>> be adequate and reliable.
> > > >>
> > > >> I've read somewhere that the aricraft industry is using 3-D
> > > >> printed Titanium joints which weigh about half as much but
> > > >> are double as strong as the previous generation of joints.
> > > >>
> > > >> Rolf
> > > >>
> > > >
> > > > +1
> > > >
> > > > 3D additive machining is much more than little plastic gizmos,
> > > Right. And some of the biggest development efforts occur about seven
> > > miles from me. https://www.americamakes.us/
> > >
> > >
> > > --
> > > - Frank Krygowski
> > I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
> >
> > https://rediyart.com/best-printer-for-stickers/
Thank you for the useful information. I had polylactic acid ("PLA") screws put in three years ago to fix a broken ankle. They were most likely created utilizing 3-D printing. They were not only capable of doing the task, but they were also resorbed after the joint, known as the "tibio-fibular syndesmosis," healed. Therefore, a second surgery to remove them is not required!

https://saasalternatives.net/puppeteer-alternative/

On Wednesday, October 5, 2022 at 4:10:07 PM UTC+6, Lucyharper wrote:
> On Friday, 5 August 2022 at 12:22:56 UTC+5, Fit Printers wrote:
> > On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > > >>>>>
> > > >>>>>
> > > >>>>
> > > >>>> The problem as I see it is that 3D printing is not a
> > > >>>> process without errors. It can very easily have voids and
> > > >>>> weak spots.
> > > >>>>
> > > >>>> If you had the idea of using the AI for designing the
> > > >>>> lightest possible part supposedly with the highest
> > > >>>> strength per weight ratios, what does it matter? Most of
> > > >>>> the bikes in the Tour will be too light for the rules and
> > > >>>> have to carry compensating weights.
> > > >>>>
> > > >>>> If the UCI, like expected, eliminates the weight limits
> > > >>>> it would probably be the end of high end cycling because
> > > >>>> it would be like lighting a fuse on a stick of dynamite.
> > > >>>> Anyone that is close to it will be injured by the flying
> > > >>>> debris.
> > > >>>>
> > > >>>
> > > >>> Yes and no.
> > > >>>
> > > >>> Many 3D print pieces do have some severe limits where
> > > >>> strength, torsional resistance or pressure matter. But
> > > >>> sintered pieces from 3D metal powder are failry well known
> > > >>> and of a different class. I don't know but it could well
> > > >>> be adequate and reliable.
> > > >>
> > > >> I've read somewhere that the aricraft industry is using 3-D
> > > >> printed Titanium joints which weigh about half as much but
> > > >> are double as strong as the previous generation of joints.
> > > >>
> > > >> Rolf
> > > >>
> > > >
> > > > +1
> > > >
> > > > 3D additive machining is much more than little plastic gizmos,
> > > Right. And some of the biggest development efforts occur about seven
> > > miles from me. https://www.americamakes.us/
> > >
> > >
> > > --
> > > - Frank Krygowski
> > I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
> >
> > https://rediyart.com/best-printer-for-stickers/
Thank you for the useful information. I had polylactic acid ("PLA") screws put in three years ago to fix a broken ankle. They were most likely created utilizing 3-D printing. They were not only capable of doing the task, but they were also resorbed after the joint, known as the "tibio-fibular syndesmosis," healed. Therefore, a second surgery to remove them is not required!

https://saasalternatives.net/puppeteer-alternative/

On Friday, August 5, 2022 at 12:22:56 AM UTC-7, Fit Printers wrote:
> On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > >>>>>
> > >>>>>
> > >>>>
> > >>>> The problem as I see it is that 3D printing is not a
> > >>>> process without errors. It can very easily have voids and
> > >>>> weak spots.
> > >>>>
> > >>>> If you had the idea of using the AI for designing the
> > >>>> lightest possible part supposedly with the highest
> > >>>> strength per weight ratios, what does it matter? Most of
> > >>>> the bikes in the Tour will be too light for the rules and
> > >>>> have to carry compensating weights.
> > >>>>
> > >>>> If the UCI, like expected, eliminates the weight limits
> > >>>> it would probably be the end of high end cycling because
> > >>>> it would be like lighting a fuse on a stick of dynamite.
> > >>>> Anyone that is close to it will be injured by the flying
> > >>>> debris.
> > >>>>
> > >>>
> > >>> Yes and no.
> > >>>
> > >>> Many 3D print pieces do have some severe limits where
> > >>> strength, torsional resistance or pressure matter. But
> > >>> sintered pieces from 3D metal powder are failry well known
> > >>> and of a different class. I don't know but it could well
> > >>> be adequate and reliable.
> > >>
> > >> I've read somewhere that the aricraft industry is using 3-D
> > >> printed Titanium joints which weigh about half as much but
> > >> are double as strong as the previous generation of joints.
> > >>
> > >> Rolf
> > >>
> > >
> > > +1
> > >
> > > 3D additive machining is much more than little plastic gizmos,
> > Right. And some of the biggest development efforts occur about seven
> > miles from me. https://www.americamakes.us/
> >
> >
> > --
> > - Frank Krygowski
> I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
>
> https://fitprinters.com/best-4x6-photo-printers/

These are all 2D printers which have nothing in common with 3D printers.

On Wednesday, October 5, 2022 at 3:10:07 AM UTC-7, Lucyharper wrote:
> On Friday, 5 August 2022 at 12:22:56 UTC+5, Fit Printers wrote:
> > On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > > >>>>>
> > > >>>>>
> > > >>>>
> > > >>>> The problem as I see it is that 3D printing is not a
> > > >>>> process without errors. It can very easily have voids and
> > > >>>> weak spots.
> > > >>>>
> > > >>>> If you had the idea of using the AI for designing the
> > > >>>> lightest possible part supposedly with the highest
> > > >>>> strength per weight ratios, what does it matter? Most of
> > > >>>> the bikes in the Tour will be too light for the rules and
> > > >>>> have to carry compensating weights.
> > > >>>>
> > > >>>> If the UCI, like expected, eliminates the weight limits
> > > >>>> it would probably be the end of high end cycling because
> > > >>>> it would be like lighting a fuse on a stick of dynamite.
> > > >>>> Anyone that is close to it will be injured by the flying
> > > >>>> debris.
> > > >>>>
> > > >>>
> > > >>> Yes and no.
> > > >>>
> > > >>> Many 3D print pieces do have some severe limits where
> > > >>> strength, torsional resistance or pressure matter. But
> > > >>> sintered pieces from 3D metal powder are failry well known
> > > >>> and of a different class. I don't know but it could well
> > > >>> be adequate and reliable.
> > > >>
> > > >> I've read somewhere that the aricraft industry is using 3-D
> > > >> printed Titanium joints which weigh about half as much but
> > > >> are double as strong as the previous generation of joints.
> > > >>
> > > >> Rolf
> > > >>
> > > >
> > > > +1
> > > >
> > > > 3D additive machining is much more than little plastic gizmos,
> > > Right. And some of the biggest development efforts occur about seven
> > > miles from me. https://www.americamakes.us/
> > >
> > >
> > > --
> > > - Frank Krygowski
> > I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
> >
> > https://rediyart.com/best-printer-for-stickers/
Again, these are 2D printers.

On Sunday, October 16, 2022 at 12:08:22 PM UTC-7, SaaS Alternatives wrote:
> On Wednesday, October 5, 2022 at 4:10:07 PM UTC+6, Lucyharper wrote:
> > On Friday, 5 August 2022 at 12:22:56 UTC+5, Fit Printers wrote:
> > > On Friday, 28 May 2021 at 20:09:01 UTC+5, Frank Krygowski wrote:
> > > > On 5/28/2021 9:01 AM, AMuzi wrote:
> > > > > On 5/28/2021 3:34 AM, Rolf Mantel wrote:
> > > > >> Am 28.05.2021 um 00:09 schrieb AMuzi:
> > > > >>> On 5/27/2021 5:01 PM, Tom Kunich wrote:
> > > > >>>> On Thursday, May 27, 2021 at 1:07:59 PM UTC-7, AMuzi wrote:
> > > > >>>>> https://bikerumor.com/2021/05/21/sram-prototypes-ai-optimized-3d-printed-cranks-using-autodesk-generative-design/
> > > > >>>>>
> > > > >>>>>
> > > > >>>>
> > > > >>>> The problem as I see it is that 3D printing is not a
> > > > >>>> process without errors. It can very easily have voids and
> > > > >>>> weak spots.
> > > > >>>>
> > > > >>>> If you had the idea of using the AI for designing the
> > > > >>>> lightest possible part supposedly with the highest
> > > > >>>> strength per weight ratios, what does it matter? Most of
> > > > >>>> the bikes in the Tour will be too light for the rules and
> > > > >>>> have to carry compensating weights.
> > > > >>>>
> > > > >>>> If the UCI, like expected, eliminates the weight limits
> > > > >>>> it would probably be the end of high end cycling because
> > > > >>>> it would be like lighting a fuse on a stick of dynamite.
> > > > >>>> Anyone that is close to it will be injured by the flying
> > > > >>>> debris.
> > > > >>>>
> > > > >>>
> > > > >>> Yes and no.
> > > > >>>
> > > > >>> Many 3D print pieces do have some severe limits where
> > > > >>> strength, torsional resistance or pressure matter. But
> > > > >>> sintered pieces from 3D metal powder are failry well known
> > > > >>> and of a different class. I don't know but it could well
> > > > >>> be adequate and reliable.
> > > > >>
> > > > >> I've read somewhere that the aricraft industry is using 3-D
> > > > >> printed Titanium joints which weigh about half as much but
> > > > >> are double as strong as the previous generation of joints.
> > > > >>
> > > > >> Rolf
> > > > >>
> > > > >
> > > > > +1
> > > > >
> > > > > 3D additive machining is much more than little plastic gizmos,
> > > > Right. And some of the biggest development efforts occur about seven
> > > > miles from me. https://www.americamakes.us/
> > > >
> > > >
> > > > --
> > > > - Frank Krygowski
> > > I appreciate the informative information. Three years ago, I had polylactic acid ("PLA") screws used to repair a broken ankle. They were probably printed using 3-D technology. In addition to being capable of doing the job, they were also resorbed once the joint (called the "tibio-fibular syndesmosis" if you *must* know!) healed. Therefore, there is no need for a second surgery to remove them!
> > >
> > > https://rediyart.com/best-printer-for-stickers/
> Thank you for the useful information. I had polylactic acid ("PLA") screws put in three years ago to fix a broken ankle. They were most likely created utilizing 3-D printing. They were not only capable of doing the task, but they were also resorbed after the joint, known as the "tibio-fibular syndesmosis," healed. Therefore, a second surgery to remove them is not required!
>
> https://saasalternatives.net/puppeteer-alternative/
I prefer the term "absorbed". That material wasn't there to begin with so "resorbed" is a false term though perhaps MD's use it because that was the way it was marketed to them.