Circles and arcs inconsistent

Motoxrrar · October 28, 2018, 1:27am

So I cut my first part I’m glad it was on a piece of scrap. It seems my circles aren’t circles and a few transitions are side stepping or jumping while cutting? Here are a few photos. Any hints or suggestions would be great.

langmuir-megan · October 28, 2018, 1:29am

Check the motor coupler set screws, when they are loose, the cuts look like what you have.

Motoxrrar · October 28, 2018, 1:31am

Also here is a photo of the complete part. I tried to follow the YouTube videos from Langmuir @langmuir-daniel and coot all the same settings with fusion 360 and mach3 so I’m not sure where to start to correct this, not sure if this is software or hardware.

Motoxrrar · October 28, 2018, 1:32am

Thanks I’ll double check them tomorrow morning

oneupperformance · October 28, 2018, 1:52am

Also how thick of material is that and what plasma cutter are you using?

Motoxrrar · October 28, 2018, 2:10am

14 gauge material with razor cut 45

GNDAN · October 28, 2018, 4:15am

Wow thanks @langmuir-megan! I had the same problem. Here I found I must have just barely not had the set screw engaged all the way and after some use it finally slipped out.

For reference here is my before and after.

Thanks, Dan