Thanks for the advice. I still very new at this and due to my background (auto design), I am better at the CAD than the cutting.
I have a 60 gallon Cambell-Hausfield compressor. It has no problem keeping up with the demand. Only kicks on once on this job. Not always same point in the job, and no other poor cuts even right before it kicks on.
As far as the 55 psi, I am getting almost no dross and all the rest of my cuts are fully through, so I felt that was enough pressure at the cutting point. I’ll bump it up a bit.
My compressor is set to kick-on at 100psi and off at 120, so I should be okay on delivery pressure.
Again, the rest of the cut is going very well. The last two steps are cutting that 7.5mm hole, then all the way around the circumference. That last little turn towards the inner side of the circumference cut right before the torch shuts off is also a problem. It has been 2mm on several of the runs.
The toolpath on the outside cut is setup as an interior cut. Inside cuts travel counterclockwise, outside cuts clockwise. So the outside cut is on the wrong side of the cut line as is your lead-in and lead-out. The lead-in/out is causing that divot on the outer edge near the hole.
You need to edit the toolpath profile on the geometry tab. Click the red arrow for the outside cut. The arrow will change direction and move to the outside of the line. This will result in a much cleaner cut as well.
As far as the hole goes, the tool path appears correct. However, with holes around a 1/4" or smaller they do not turn out too well cutting with plasma.
Another thing you might consider, is extruding your sketch into a body while in the design environment in Fusion. It make creating the tool path much easier. Instead of having to select each cut individually, you just select the body and Fusion selects the cuts and their direction for you automatically.
Thanks alot for the quick help. I will make the updates and give it a try.
The few things I’ve made so far, I did extrude. Guess I just forgot on this one. Since there were only 4 cuts to select, didn’t really cause me any issues.
And the “inside/outside” cut choice I still need to get my head around so I don’t screw that up in the future.
I switched to outside on the outer circle tool path. It definitely helped. On two fo the three I cut last night, the mounting hole (7.5mm dia) even cut out completely, even though I made no change to that path.
On the air pressure, I was mistaken in my original post. I had it on 60psi. Compressor never even had to kick on during a full cut cycle at 3200mm/min. It was kicking on during the postflow cut each time.