Pressing to hard against the blade when you're cutting. With a band saw you need to
allow the blade to cut gently so you don't need to push anything against it to hard.
You also get slight wandering if the material you're cutting is thin and the blade is
wobbling around above it. To prevent this from happening you get an extension rubbing
block on an arm that swings down from the top and straddles the blade just above the
thing you're going to cut. The arm is slide adjustable on a finger bolt so that you
get a full range for thicknesses.
Is the tension OK ? The tension needs to be pulling the blade until the point when
you ping the band it rings like a crystal glass and doesn't sound like a thud. I've
had a band saw blade singing in top C before.
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