On May 20, 2020, at 10:16 PM, crispin_m_miller via groups.io
<crispinmm@...> wrote:
Next assignment: what is a similar trick to cut a dodecagon?
Hmm, I have a radial arm saw (and no table saw), so everything looks like a
??? ;-)
But, I'm having trouble understanding why the fence would be set at anything
other than 30 degrees or 60 degrees.
Ignoring safety considerations, which I would not, and would have to think
about, I'd set my radial arm saw so the blade is at a 30 degree angle to the
table (if I can do that, maybe I'm limited to 45 degrees in which case I'd set
it to 60 degrees).
Then I'd set the distance from the fence to the blade such that I could cut
what I'll call the faces for 5 and 7 oclock with one of the square faces (the
bottom one) on the bottom, then turn the piece 180 degees (so the top is on
the bottom) and cut the 1 and 11 oclock faces. (Those should all be cuttable
with the fence at the same horizontal distance.)
Then I'd turn the piece 90 degrees and work on cutting the 3 and 8 oxclock
faces, and then turn 180 degrees and cut the 2 and 10 oclock pieces . I have
to think about it, but I may have to move the fence for these last 4 cuts (or
not).
Not sure what I'm missing. (Well, I am not thinking about safety.)
