Hi All,

Having a strange problem that has me pulling hair, and I don't have enough to spare.

I have a spotting drill in my mach 3 tool table that I have used many times before. Today after zeroing my part with a probe, I started using that drill, but noticed it was going too low before the programmed z movement.

I double checked part zero, as well as the tool length against what was in the tool table, and everything was spot on.

I must have remeasured the tool length a dozen times, but every time I checked the z zero for that tool in the spindle it was low by roughly 40 thou. Went into the " what the heck is going on mode" then I remembered that tool was in the tool table twice with two different numbers, because of old projects. Both entries in the table had the exact same length, but when I selected the other tool number and checked the z zero against the part, it was perfect???

Is this maybe a corruption of the tool table data, or something else unusual?

If anyone has had similar experiences or has any ideas, I'd love to hear them.

Terry