Decagonal Disks?

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Forum topic by Steven Davis posted 11-05-2010 07:35 PM 1409 views 0 times favorited 1 reply Add to Favorites Watch
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Steven Davis

118 posts in 3117 days

11-05-2010 07:35 PM

Topic tags/keywords: jig question router tablesaw plane shaping

I’m making a board game and I need some decagonal disks (flat decagons) on which I can put numbers on the edges.

For my prototype, I used some scrap large-ish dowel discs and free cut the decagons from a template on my bandsaw.

Not pretty and not scalable.

My initial thought is to create a jig similar to a lathe that I can tun 35 degrees and cut each face and then take the decagonal cylinder over to my table saw and cut a whole-lotta disks.

I would make the cuts either with my table saw or a router.

Is this the right approach? Would the router or table saw be better (each face is around 1/2 to 3/4 inch to allow a number to be placed)?

Any good ideas on precise 35 degree rotations?

Thanks for any thoughts!!!

-- Steven Davis - see me at

1 reply so far

View BreakingBoardom's profile


615 posts in 3283 days

#1 posted 11-05-2010 08:10 PM

Well first of all, I think you’re starting with the wrong angle. Interior angles on a decagon would be 144, so the complimentary angle that you’d be making the cut at is 36. Being off by 1 degree over 10 sides could add up to be some of the problem. Maybe a good approach would be to make a template by gluing up ten pieces cut like a segmented turner would do. Make little triangles or trapezoids with the proper outer edge length and angles to make the size you want. Then attach the template and use a router and flush trim bit. I think that would be easiest for me. Not sure how I’d do it on a table saw unless maybe if I had the Incra setup.

-- Matt -

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