Owen Lowe wrote:

Hello all.

I'd like to space out 5 and 7 markings around the circumference of a
convex cone shaped turning. I have 48 and 96 position indexing on my
lathe but come up with a fractional number when dividing it out.

I tried wrapping both tape and paper around the turning, but being
convex and tapered, it just wouldn't lay flat. I tried auto striping
tape which will follow the curve but when I removed it to mark out the
segments, it had stretched into a very curved shape which was difficult
to measure with my straight rulers.

Any simple ideas to help out?


Have you turned this already? How about a pentagon and heptagon - stick
made - to slip over the form. If needed, build so that it can be
assembled on the form - eg both ends too large to slide polygon over the
piece. Build your polygons such that a circle the diameter of the correct
place on the form can be inscribed within them.

LD