I think it's an arbitrary amount. If you make too much adjustment
range, there's no particular downside; if you make too little
adjustment range, it's easy to increase. At some point, the mounting
studs hit the sides of the spindle holes, setting an upper limit for
adjustment.
My plan was to make the maximum adjustment range possible, on the
theory that I've never regretted having more adjustment capacity on
anything.
Roy
--- In 7x12minilathe@..., "bbftx <bflint@a...>"
<bflint@a...> wrote:
Roy and Al:
I'm making an adjustable backplate too. One thing I question
in Rick's otherwise great design is the amount of adjustment
he built in. .050" oversize on the diameter seems like too much
to me.
I can't imagine needing to adjust more than a few thou. Wouldn't
a .005 to .010" oversize diameter give a person enough adjustment?
Regards,
B Flint
--- In 7x12minilathe@..., "roylowenthal
<roylowenthal@y...>" <roylowenthal@y...> wrote:
Al,
I agree; I'm in the process of making the same one!
Roy
--- In 7x12minilathe@..., "fromday2 <aldayis@a...>"
<aldayis@a...> wrote:
Roy, I saw Rick Kruger about a month ago and one of the
intresting
things in his shop is the adjustable backplate. The idea and
execution were clever and well done. I am going to make one
for a 4" 3jaw I have. His was nice looking, the concept is
simple enough that it should be reasonably easy to do.
Al Day
