I started with a 4'x4' piece of 3/4" plywood and ripped it in half to 2'x4' pieces. The holes are specified to be centered 9" from the top edge and 6" in diameter. I thought I could just chuck the fly cutter into the drill press and slowly but easily cut my holes. It turns out the drill press only has about a 7 or 8 inch throat depth, so that idea is out and I decided that instead of investing at least about $50 on a decent hole saw, I would go the more hazardous route and chuck the fly cutter in a hand drill.
This was not the greatest idea, but after a couple drill battery chargings and completely dulling the cutter, I had some pretty decent 6" holes. A little sandpaper smoothing and the holes were pretty much perfect. It took a couple hours, but these were exactly the holes I was end up with:
With the holes done, the next step was to run some 2x4s through the jointer for the edges of the boards. I was going to pockethole the 2x4s, but couldn't find my jig, so I just cut the 2x4s to length and glued them to the boards.
Next, I took a roundover bit to the assemblies to smooth out the edges as well as round over the edges of the holes.
The last step was to cut out some legs. I cut the angle and pivot point of one leg and used it as a template to route the other 3 legs exactly the same shape and size. Then, the legs were attached with 3/8" carriage bolts and some wingnuts. I had a little hardware fiasco when I decided to use the recommended locknuts instead of wingnuts. The locknuts were impossible to remove from the carriage bolts once they were on, so I had to break out the dremel to cut one of the nuts off the bolt.
I'm letting them handle the finishing, but here are a few photos of the completed regulation cornhole boards:
My friend Nate even bought some bag-o-lanterns to light up the board holes for night playing, but we haven't installed those yet.
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