I’m trying to figure out what happened with this tool path. I ran a toolpath with adaptive clearing to the bottom of .125 6061t. It is cutting some triangles. The first one helical ramped and proceeded to clear, but it was a few mm’s deeper than the stock. The second one was similar, but was around 7mm deep. on the third it only did the helix ramp through the stock and just kept going. I stopped it and the hole was around 9mm. I verified my fusion toolpath and reloaded it. started the job and it removed a little bit of material in the first 2 triangles around the edges. On the third it performed the helix and started to clear, but was still deeper than it should have been and then it did not retract and continued the toolpath . I stopped it
Difficult to really pinpoint a reason for the issue, but one thought is that maybe by cutting into the tape, you gunked up the cutter. Then as the cut continued, aluminum started getting stuck in the cutter, and your Z-axis basically just ripped itself down into the material as the cutter welded itself to the material.
This was my second attempt with aluminum, and I missed the optimal load setting, so it was system default. It should not have made it through the tape, could the high optimal load caused to catch on an edge and then ripped down ?
I now realize that was a big ask. From what I’ve read I should have been closer to .002-.003.
I did run another tool path, but changed it to .002 and had a much better outcome.
That is a really low feed rate for aluminum unless you’re using a small diameter tool. You didn’t specify what tool you used, diameter, etc. But if you’re using a 1/4" endmill, it would run at least 75 IPM with a single flute.