Thus far I've only had it retract the cutter correctly once and then on my next part it skipped the Z1.2 line and ruined the part. In this video, we cover the installation of the Mach3 Plasma post processor into Fusion 360 and generating G-codes that are ready for Mach3 to cut. I had to move the drill operations to last as it was screwing up one of my slotting operations due to it skipping lines. It will usually drill the first hole, retract partially and then gouge the part without doing the full retract to Z1.2. These are the very last lines of my 5700 lines of code for a particular part I'm making. Does anyone know why this is happening? Everything else seems to work great and the accuracy is spot on. I do the part design at my friends shop and then cut it at home on my Taig mill. I'm not a CNC expert, I'm quite the CNC rookie. I've lost three 1/8" extra long end-mills to this problem to a tune of $33 in the last few days. That can cause it to not move to the correct X/Y coordinate or not retract the cutter before moving on the X/Y plane causing the tool to gouge the part and break. However it seems like the "G80" codes screw up Mach3 and it will skip a line or two of code. In this case the program is drilling a 1/8" hole with a center cutting end mill. (FeatureMILL POST for MACH3 MILL rev1.0 - ) I'm using Featurecam 2006 along with Mach 3 to machine parts.
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