Reply by Cosmicsniper

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Posted on making an octogon-cont.

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2202 posts in 3356 days

#1 posted 01-24-2011 05:32 PM


I’ve found it’s not that difficult if you do as follows (which works with any miter) ...

1.) Cut your sides using your miter saw for the most accurate fit you can (22.5 degrees in your case). Each piece should be slightly longer, the extra length being the width of the kerf of a hand-held miter saw.
2.) Place the pieces together on a scrap backer-board, in a best fit arrangement, using clamps to hold the pieces down. Surely, you have enough clamps, right? :)
3.) Use the aforementioned hand-held miter saw and saw through each miter at each joint.
4.) You should catch part of BOTH boards within the kerf of the cut.
5.) Unclamp, re-fit, and glue ‘em up.

The procedure might have to repeated if your original angles were greatly off, but eventually those miters will close up perfectly.

Hope this helps…

-- jay,

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