Reply by ArtMann

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Posted on Is my INCRA Miter 1000HD defective?

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1483 posts in 1731 days

#1 posted 02-12-2018 02:51 AM

What you have is a tolerance stack up problem, not a miter gauge problem. First of all, you will never be able to consistently cut things in such a way that the end result has zero error. Even if the gauge is 100% accurate, your technique and equipment are not. You didn’t assemble the thing like one would normally do. What you did was to put the entirety of the error in one joint. Typically, all pieces would be clamped together at the same time with a strap or band clamp. That would allow the error to divide itself among all the joints instead of forcing it all into one. The clamping pressure would make the tiny errors disappear. Your stock is quite thin, making proper clamping difficult. If I were going to make a lot of those, I would make a glue up fixture.

I have used an Incra 1000HD for over 10 years building multi-sided boxes and accuracy has never been a problem.

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