Reply by rance

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Posted on making an octogon-cont.

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4263 posts in 3310 days

#1 posted 01-24-2011 01:51 PM

Theresa, I believe you are experiencing the same problem as making a mitered box. You can google it or search here on LJ. Here’s the short version, whether a square or an octagon(anything with an even number of equal length sides):

1) Rough cut pieces a little long
2) Miter one end of all pieces with your BS
3) Sand that one end to precision with your disk/belt sander(to precision)
4) Cut the 2nd end a tad long on all pieces
5) Set up a stop block to both bring them to exact length AND to clean up the miter on your sander
6) Dry fit by holding them together with a rubber band
7) For an octagon, apply glue to all miters except 2 on opposite sides
8) After dry, on a flat surface(Table Saw surface), sand each clamshell to perfect flatness
9) Glue the clamshells together.

You can also search procedures for segmented bowls to get more details on the above.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

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