just when I think ive got it, my machine wants to go deeper.

[sailhatin]

so ive taken almost everything you guys have taught me and started a new project. some Rolling Stones stuff.  I use shaper3d for my cad, I then export to fusion and do my setup and manufacture set up. this thing was supposed to only be .125 deep and it went way deeper.  first cut was deeper than the .0625 max pass I had set...I was intrigued to see what th edit could handle so I just started watching it. it held up pretty well, .125 wide bit with a .25 shank. at any rate...can anyone see the last I have to do to get my tool path correct? ive attached the fusion file and an image of my cuts.  thanks in advance and have a great day.  jonny 

  

[seth.madore · Accepted solution]

Well, your file looks right, the toolpath is only going .125" deep in total. Are you certain that you've correctly established where the top of the part is AND that you've established the tool length correctly?

[sailhatin]

yeah...im with you, I use a probe and maybe that caused an issue that it hasn't before? ill set my zero off of my stock and try again. as far as tool length goes... I input them exactly as the manufacturer specs say. my only question there is that depending on how deep you insert your bit into the spindle, is the bit length really an issue? thanks so much for your quick response. youre always a tremendous help.

[seth.madore]

Bit diameter isn't going to cause this issue, unless it wasn't secured properly in the collet. In which case, it would get sucked out and you'd see progressively deeper cuts. 

I'd first look to verify that the tool was touched off properly and, assuming you have a controller that allows for this, make sure there are no values that would modify the results. After that, double check the Z offset for your part

[sailhatin]

so I really love the whole "ghosts in the machine" concept, especially today. my probe was somehow configured at 12mm instead of 9. I haven't messed with that setting since I first installed it. this leads me to a ghost busting concept, I need to regularly check all kinds of stuff on this machine. if this were my job I would suggest a 20 minute morning walk around of the machine and its peripherals.   so ultimately it was an easy fix. thanks again for your solution and time.   jonny