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Reply by stefang

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Posted on making an octogon-cont.

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stefang

12424 posts in 1921 days


#1 posted 1266 days ago

Hi Theresa, I think you are on the right track with the sander, but it’s not just about getting the angle right. You also have to get the individual slices exactly the same size. The best way to do this is with a sanding jig. Here is an example of one I use for making segments.

Photobucket

This particular jig would have to have a wider fence for large pieces. I found an idea here that gives an idea what I’m talking about.

http://www.google.no/imgres?imgurl=http://www.woodpeck.com/media/main_Plan4_Disc-Sander-Jig.jpg&imgrefurl=http://www.woodpeck.com/builditstarterkit.html&h=323&w=450&sz=25&tbnid=PufWmM62LvgJMM:&tbnh=91&tbnw=127&prev=/images%3Fq%3Dsanding%2Bjig&zoom=1&q=sanding+jig&usg=__H53nHXbGeNgWRoqO4wTyaSkQXCs=&sa=X&ei=i2o9Tc6pHsWhOv-2ncYL&ved=0CBoQ9QEwAA

I would make something similar to this by having a sliding auxiliary table that fits your disk sander table (with a runner on the bottom that fits into the sander’s miter slot. Then just carpet tape a fence on it at the correct angle and with the correct opening so you can shove the point of your workpieces tight in between the disk and the fence. Then slide the auxiliary table against the rotation of the sander to sand the one side of each piece. Next carpet tape a thin strip of something with a consistent thickness against the edge of the fence to make the opening slightly smaller. Now sand the other edge of each piece. You should now have 8 pieces exactly the same size.

Hope this helps you out.

-- Mike, an American living in Norway.


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