Today I unexpectedly acquired one of these.
https://www.kbctools.com/itemdetail/1-397-710

I understand that the narrow clamp fits between vise jaws but not its other
differences from standard vee blocks, such as the double knurled screw.
Could someone please enlighten me?

On Thu, 2 Sep 2021 19:35:05 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

>Today I unexpectedly acquired one of these.
>https://www.kbctools.com/itemdetail/1-397-710
>
>I understand that the narrow clamp fits between vise jaws but not its other
>differences from standard vee blocks, such as the double knurled screw.
>Could someone please enlighten me?
>

Maybe this video can help?

https://youtu.be/Qdu61BA8aaY?t=1268

He has a crap load of v-blocks... I set the start time to the one
you're interested in. Seems that double knurl is used to adjust the
block when laid on its side...

--
Leon Fisk
Grand Rapids MI

"Leon Fisk" wrote in message news:sgt40q$hn6$1@dont-email.me...

Maybe this video can help?

https://youtu.be/Qdu61BA8aaY?t=1268

He has a crap load of v-blocks... I set the start time to the one
you're interested in. Seems that double knurl is used to adjust the
block when laid on its side...

---------------

Thanks, though it burned through a day's ration of Internet.

On Fri, 3 Sep 2021 09:06:35 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>Thanks, though it burned through a day's ration of Internet.

Was afraid of that...

I checked Starrett's web site, they make one too but don't explain its
use. Also looked at several of my old books but didn't find a V-block
like that one...

I would never have guessed the knurled bolts use...

--
Leon Fisk
Grand Rapids MI

"Leon Fisk" wrote in message news:sgtoe1$4a1$1@dont-email.me...

On Fri, 3 Sep 2021 09:06:35 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>Thanks, though it burned through a day's ration of Internet.

Was afraid of that...

I checked Starrett's web site, they make one too but don't explain its
use. Also looked at several of my old books but didn't find a V-block
like that one...

I would never have guessed the knurled bolts use...

Leon Fisk
Grand Rapids MI

------------------

Perhaps I should just wait until I have a setup problem it might solve.
Milling the sides and ends of shafts and tubes became much easier when I
bought a set of square and hex 5C collet blocks and a 6-jaw chuck on a 5C
mount.

On 9/3/2021 2:32 PM, Jim Wilkins wrote:
> "Leon Fisk"  wrote in message news:sgtoe1$4a1$1@dont-email.me...
>
> On Fri, 3 Sep 2021 09:06:35 -0400
> "Jim Wilkins" <muratlanne@gmail.com> wrote:
>
> <snip>
>> Thanks, though it burned through a day's ration of Internet.
>
> Was afraid of that...
>
> I checked Starrett's web site, they make one too but don't explain its
> use. Also looked at several of my old books but didn't find a V-block
> like that one...
>
> I would never have guessed the knurled bolts use...
>
> Leon Fisk
> Grand Rapids  MI
>
> ------------------
>
> Perhaps I should just wait until I have a setup problem it might solve.

DING! DING! DING!

I have a Starret one of these. I used it once to hold a small
cylindrical item suspended off the side of the vise. It worked a real
treat.

--
This email has been checked for viruses by AVG.
https://www.avg.com

"Bob La Londe" wrote in message news:sgucqi$8k5$1@gioia.aioe.org...

On 9/3/2021 2:32 PM, Jim Wilkins wrote:
> Perhaps I should just wait until I have a setup problem it might solve.

DING! DING! DING!

I have a Starret one of these. I used it once to hold a small
cylindrical item suspended off the side of the vise. It worked a real
treat.

---------------------

Some tooling such as the 5C collet blocks and small 6-jaw enable a new range
of work-holding, but this thing probably doesn't.

One that has for me is a shop-made collet sleeve that holds bolts centered
on either the shank or threads in a 5C collet larger than the bolt's hex
head. For the gantry track I needed Grade 8 bolts whose threads began 0.180"
(the channel web thickness) past the last shear plane. The head, shank and
rolled threads aren't concentric or aligned axially.

The 3/4" diameter collet sleeve blank was bored 0.370" to match the bolt
shanks, then tapped 3/8-16 which gave shallow grooves that the threads
readily engage. Grooves in the OD near the ends hold O rings that keep it
together after slitting it lengthwise into three pieces.

My previous screw holder design is a cup with the bottom tapped for smaller
screws that are threaded up to the head. I use it to add a tapered end and
root-diameter pilot to make them self aligning, which is very handy on
awkward connections like the antenna mast joints up on my roof.

This began when I tried to turn Segway battery mounting studs from 1/2"
stainless bolts for a robot, rather than sawing up a scarce reject chassis
casting. Chucking the bolts by the hex head gave wobbling threads. The cup
shaped holder provided a long straight engagement in a 1" collet and let me
cut the stud taper close enough to the head as well as drill and tap the end
for the battery retaining screw. The ID of the cup has to be larger than the
socket that tightens the bolt head.

After I get current projects done I'll slit the cups so they clamp onto the
threads instead of requiring either the screw head or a nut to be tightened.
They aren't always square to the threads and throw off alignment.

That's the nature of my industrial machine shop experience, experiments and
prototypes that I usually designed as I made and tested them, sometimes in
my basement. Generally the company machinists demanded a finished blueprint
and refused to do any old-time hand work like filing to fit. I've collected
the fine tooth, safe edge Swiss-type files that change filing from crude to
precise.

On Sat, 4 Sep 2021 08:43:51 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>That's the nature of my industrial machine shop experience, experiments and
>prototypes that I usually designed as I made and tested them, sometimes in
>my basement. Generally the company machinists demanded a finished blueprint
>and refused to do any old-time hand work like filing to fit. I've collected
>the fine tooth, safe edge Swiss-type files that change filing from crude to
>precise.

If you haven't already seen this... a little ditty on how John Moses
Browning worked:

https://www.americanrifleman.org/content/thinking-in-three-dimensions-the-genius-of-john-moses-browning/

--
Leon Fisk
Grand Rapids MI

"Leon Fisk" wrote in message news:sgvvve$aat$1@dont-email.me...

On Sat, 4 Sep 2021 08:43:51 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>That's the nature of my industrial machine shop experience, experiments and
>prototypes that I usually designed as I made and tested them, sometimes in
>my basement. ...

If you haven't already seen this... a little ditty on how John Moses
Browning worked:

https://www.americanrifleman.org/content/thinking-in-three-dimensions-the-genius-of-john-moses-browning/

Leon Fisk
Grand Rapids MI

----------------------

I read it, and also his biography which goes into further detail such as
brazing on extensions that were difficult to machine without special
fixturing, resulting in a prototype that cycled properly but might not be
safe to fire. It's amazing how many of Browning's designs survived for a
century in the original form, despite attempts to 'improve' them for cheaper
production. I don't think as many of Edison's are still in use.

This is the pistol that preceded the Luger.
https://en.wikipedia.org/wiki/Borchardt_C-93

In his bio Col. David Hackworth wrote that Browning's 45ACP was replaced
mainly due to its high accident rate in inadequately trained hands, not lack
of effectiveness. I was issued one with -zero- training and had to find
someone to teach me, and I carried it in Condition 3. We had drums of sand
outside the barracks to aim them into when unloading from Condition 1,
cocked and locked.

Politically the USA needed to symbolically adopt something, preferably
minor, from NATO to partly make up for everything we had forced on them.

On Sat, 4 Sep 2021 13:04:09 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>It's amazing how many of Browning's designs survived for a
>century in the original form, despite attempts to 'improve' them for cheaper
>production. I don't think as many of Edison's are still in use.

Browning... the right man in the right place at the right time...

Can't tell you how many ideas I've come up with only to find more
refined versions already for sale and/or in old patents ;-)

--
Leon Fisk
Grand Rapids MI

"Leon Fisk" wrote in message news:sh0b1q$cc2$1@dont-email.me...
....
Can't tell you how many ideas I've come up with only to find more
refined versions already for sale and/or in old patents ;-)

-------------------

Such as?

On Sat, 4 Sep 2021 19:43:30 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

>"Leon Fisk" wrote in message news:sh0b1q$cc2$1@dont-email.me...
>...
>Can't tell you how many ideas I've come up with only to find more
>refined versions already for sale and/or in old patents ;-)
>
>-------------------
>
>Such as?

Lockpicking and collecting is another interest of mine...

I've had the idea to use a split core to make picking more difficult.
Patent is from 1930. Don't know if it was ever produced...

https://patents.google.com/patent/US1755847A/en

There are a lot of lock related patents using similar ideas I've mulled
around in my head through the years. A lot of smart people around doing
the same thing. Some of them even document their thoughts or better
yet sell the items :)

Saw something like this years ago but have yet to locate the source...

It ever you feel like you've come up with a novel design or idea, it
simply means you haven't yet done enough research...

--
Leon Fisk
Grand Rapids MI

On 9/3/2021 4:58 PM, Bob La Londe wrote:
> On 9/3/2021 2:32 PM, Jim Wilkins wrote:
>> "Leon Fisk"  wrote in message news:sgtoe1$4a1$1@dont-email.me...
>>
>> On Fri, 3 Sep 2021 09:06:35 -0400
>> "Jim Wilkins" <muratlanne@gmail.com> wrote:
>>
>> <snip>
>>> Thanks, though it burned through a day's ration of Internet.
>>
>> Was afraid of that...
>>
>> I checked Starrett's web site, they make one too but don't explain its
>> use. Also looked at several of my old books but didn't find a V-block
>> like that one...
>>
>> I would never have guessed the knurled bolts use...
>>
>> Leon Fisk
>> Grand Rapids  MI
>>
>> ------------------
>>
>> Perhaps I should just wait until I have a setup problem it might solve.
>
>
> DING!  DING!  DING!
>
> I have a Starret one of these.  I used it once to hold a small
> cylindrical item suspended off the side of the vise.  It worked a real
> treat.
>
>
>

V-Blocks have the added benefit of being able to hold any size
cylindrical object within their range. Unlike a collet block that
requires the right size collet.

--
This email has been checked for viruses by AVG.
https://www.avg.com

"Bob La Londe" wrote in message news:sh38la$8on$1@gioia.aioe.org...

V-Blocks have the added benefit of being able to hold any size
cylindrical object within their range. Unlike a collet block that
requires the right size collet.

---------------------

Very true. I have to remember to leave metric-sized turnings attached to the
fractional drill rod for milling, or leave a temporary inch diameter
somewhere. The 6-jaw clamps any metric size but has a few thousandths of
runout, which usually matters only if I have to turn after milling. Keyways,
wrench flats and safety wire holes don't need exact locating.

Now that I'm making parts only for myself it doesn't matter that I cut inch
threads to mount stub axles with metric bearings. When I was building
prototypes I bought a 120/127 metric change gear set for my lathe, instead
of the standard 100/127, because a spreadsheet showed it would cut more fine
optical threads.

On 9/5/2021 2:58 PM, Jim Wilkins wrote:
> "Bob La Londe"  wrote in message news:sh38la$8on$1@gioia.aioe.org...
>
> V-Blocks have the added benefit of being able to hold any size
> cylindrical object within their range.  Unlike a collet block that
> requires the right size collet.
>
> ---------------------
>
> Very true. I have to remember to leave metric-sized turnings attached to
> the fractional drill rod for milling, or leave a temporary inch diameter
> somewhere. The 6-jaw clamps any metric size but has a few thousandths of
> runout, which usually matters only if I have to turn after milling.
> Keyways, wrench flats and safety wire holes don't need exact locating.
>
> Now that I'm making parts only for myself it doesn't matter that I cut
> inch threads to mount stub axles with metric bearings. When I was
> building prototypes I bought a 120/127 metric change gear set for my
> lathe, instead of the standard 100/127, because a spreadsheet showed it
> would cut more fine optical threads.
>

Sometimes I just want to find the center and mill a feature on it. I
don't even care what size it is. Well not exactly.

https://www.youtube.com/watch?v=peXjarvLhWA

That v-block was in that condition when it was given to me. I know you
don't have much band width, but the hold is right at the beginning.

--
This email has been checked for viruses by AVG.
https://www.avg.com

"Bob La Londe" wrote in message news:sh82bd$qei$1@gioia.aioe.org...

Sometimes I just want to find the center and mill a feature on it. I
don't even care what size it is. Well not exactly.

https://www.youtube.com/watch?v=peXjarvLhWA

That v-block was in that condition when it was given to me. I know you
don't have much band width, but the hold is right at the beginning.

---------------------

The video consumed 10MB before starting to play so I stopped it, as I ran
way over yesterday. I need to average about 50MB a day browsing to have
enough left for updates. I can average 40MB or less when not looking things
up for others. If I really need more I can visit a neighbor or the library
for WiFi or pay $10/GB, limiting myself to 2GB/month is self-discipline.

I center a vee block groove under the spindle with an edge finder, unless
the central slot is deep enough for a center finder.

A center drill (etc) resting on a strip of scrap aluminum holds it level
when at the high point of a shaft. That usually gets me within 0.005" of the
true center. If I need better accuracy I use the edge finder on the sides of
the shaft. Those methods also work for shafts in collet blocks or indexers.

On Tue, 7 Sep 2021 12:49:39 -0400
"Jim Wilkins" <muratlanne@gmail.com> wrote:

<snip>
>The video consumed 10MB before starting to play so I stopped it, as I ran
>way over yesterday...

You can get an embed link to work much of the time like this:

https://www.youtube.com/embed/peXjarvLhWA

I made a search to use it at times with something like this:

https://www.youtube.com/embed/%s

Then I just highlight the video id portion and request the search
with the special embed set up. Works here with Vivaldi browser...

It will fail if the video doesn't allow embedding, Bob's worked okay ;-)

--
Leon Fisk
Grand Rapids MI

"Leon Fisk" wrote in message news:sh8drr$g8m$1@dont-email.me...
>..........

I began posting here for practice to improve my technical writing, a
weakness that was holding me back at work. I also study how others present
ideas in print. It can be difficult to organize ideas into one dimension if
you don't think that way.

I was once a film makers technical assistant and am aware of production
techniques. I've been very disappointed in how low the information content
often is in video, compared to well-written text. I record PBS shows and
play them back with VLC with subtitles enabled, as the script is usually
more informative than the images, although they are more entertaining.