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Reply by rance

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Posted on making an octogon-cont.

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rance

4128 posts in 1787 days


#1 posted 1306 days ago

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.
HTH.

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


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