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Reply by Kelly

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Posted on Band Saw Circle Cutting Jig Problems

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Kelly

245 posts in 1695 days


#1 posted 06-08-2010 02:18 AM

I was experimenting with circle cutting jigs for some specialty projects. And experienced the same problem KevinVan experienced. One of the effect not made clear was the blade kept pushing out, as if tracking was off, or some other problem.

Just for reference, I’m using a 3/16” 3TPI blade on a Powermatic 14” band saw. The blades I’m using have been excellent, until I tried them with the jig. Thinking the blade was toast, I installed a new one, but suffered the same effects.

I checked tracking and reset the bearing guides, but the problem repeated. Since life had been good up to the point of the jig AND my first few circles turned out good [and quick], I presume the problem lies either in the jig, or its application (a 1 D 10 T error).

donjoe appears to be he who has hit the band saw on the head. In the course of my experiments, the jig was not set to repeat from the exact same point used making the first couple circles. I walked the wood into the blade by sliding the jig on the miter track, then started my cuts. As such and without a stop block, I may have overrun my line or otherwise set myself up for binding blades.

I’ll go back out and try: 1) starting on the cut line; and, running in and stopping with a stop block (set for the cut line). Barring nuclear incident related to improper jig use, I’ll report back the results.

It would be helpful if more of the sites offering circle jig plans noted start positions and such. I’d be surprised if KevinVan and ol Kelvancra were the only ones to suffer this fate.


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