On Monday, October 25, 2021 at 6:21:32 p.m. UTC-4, russellseaton1@yahoo.com wrote:
> On Monday, October 25, 2021 at 8:38:02 AM UTC-5, AMuzi wrote:
> > On 10/25/2021 12:07 AM, Luns Tee wrote:
> > > On Wednesday, October 20, 2021 at 12:05:41 PM UTC-4, AMuzi wrote:
> > >> On 10/20/2021 10:48 AM, Tom Kunich wrote:
> > >>> On Monday, October 18, 2021 at 5:51:57 PM UTC-7, AMuzi wrote:
> > >
> > >>>> Campagnolo sprocket spacing is identical for all Ten systems.
> > >>>> The various materials, carriers ('spiders') etc mean a
> > >>>> selection of various spacer thicknesses for each model cassette.
> > >>>
> > >>> Andrew, that Campy technical manual shows 4 different spacer thicknesses.
> > >>>
> > >> Yes, I wrote that, see above.
> > >> "selection of various spacer thicknesses"
> > >> The sprocket-to-sprocket spacing is the same across any
> > >> given cassette and for all models of Ten cassette.
> > >>
> > >> Spacers vary because the sprockets themselves have different
> > >> materials, thicknesses, formats. The low gear is lenticular,
> > >> the high gear(s) are thick with integrated spacing.
> > >> --
> > >> Andrew Muzi
> > >> <www.yellowjersey.org/>
> > >> Open every day since 1 April, 1971
> > >
> > > I'm reminded of this:
> > > https://www.youtube.com/watch?v=Ef93WmlEho0
> > >
> > > There's enough ambiguity in the word "spacing" to cause confusion. In some contexts, its meaning is equivalent to the spacer thickness, while the word "pitch" (like in metric thread pitch) is used instead to mean the centre-to-centre distance of uniformly placed objects.
> > >
> > > -Luns
> > >
> > Thank you so much! That was wonderfully elucidating.
> >
> > cf. kerf allowance when calculating total material needed to
> > cut many pieces from bulk (as wood or metal).
> > --
> > Andrew Muzi
> > <www.yellowjersey.org/>
> > Open every day since 1 April, 1971
> True. When you cut a 4' x 8' sheet of plywood into four equal pieces to make shelves or sides to a box. You end up with four pieces that are 23 15/16" x 47 15/16". Assuming 1/8" saw blade kerf. Not 2' x 4' exactly. Assuming exactness matters, or not.

Over here our plywood is nominally 4' x 8' but in reality it's a metric size and thus slightly larger.Thus you can allow for the kerf and still have 24" x 48" when the pieces are cut.

Cheers