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John Weeks John Weeks is offline
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Default Laying out and drilling an index disk

On Mon, 10 Nov 2008 14:36:01 -0800 (PST), Fred Holder
wrote:

Thanks for the reply, Fred. I did get a wheel made on the drill press
and it works fine for my purposes, but the next one I make I'll try
this way!

Hello John,

I didn't see this message until today. Now, I'm sure that I need to
get another way to read the newsgroup.

In relation to your question, I've made a number of indexing wheels
over the years. The easiest way is to use Woodturner PRO or one of the
other segmenting projects. Select a ring diameter that will print onto
an 8-1/2 x 11 inch page. Set the center diameter to the diameter of
your lathe spindle; i.e. 1", 1-1/4", etc. Then set the number of
segments to 96. Drill a hole for the center point i\of a size to slip
over your spindle. Print out the drawing, cut out the center hole for
the spindle, and glue it to your indexing disk using the lathe
spindle to center the drawing on the plate when gluing.

Now, turn the disk round to match the outside of your drawing that has
been glued to it. Then take the disk to the bandsaw and make cuts on
each of the 96 segment edges. Make a deeper cut on every other one to
indicate what is the 48 position slots. If you don't have a bandsaw,
use a hacksaw to saw the slots.

Again, mount the disk on your lathe and make up a mounting for a piece
of a hacksaw blade to swing in and engage the slots in the disk. This
will give you the option of 96 or 48 position indexing, plus a number
of other positions less than 96.

This works much better than trying to get your drill to make a hole
exactly on one of the lines that will always align with a pin
arrangement. I've made them both ways, but found that the slot with a
piece of hacksaw blade works best. For easy attachment of the hacksaw
blade mounting to your lathe headstock, a magnetic base works very
well.

I hope this helps. If you have questions, go to my web site to get my
e-mail address and ask the questions that way.

Fred Holder
http://morewoodturning.net