By
improving my vision I improved my accuracy. I 
also
added a t,ouch
sensitive pressure foot to keep the block of wood
steady. By
improving the saw
and my vision I can cut down the center
of a ball point pen
line
leaving a wisp of ink on either side of the kerf.
That
kind of control
allows me to cut two identical hand drawn
pieces of hardwood
that
can be glued as tight as any fenced cut.
The greater the arc, the greater the need for accuracy.
I find that each piece of wood must be cut separately. The thickness of the blade is enough to throw off the accuracy of a long sweeping arc if two pieces are cut on top of each other. Also, cutting through two pieces (1-1/2" thick) of wood
more than
likely would
cause the blade to
deflect enough to ruin the fit. Here you can see mahogany and maple. I
usually cut
the darker wood first because
it is the harder one to see the pen line on under the microscopeThe next step is to glue up the blocks, the rings, and the layers.
