CNC Cutting Random Circles

[Father2Sons]

I was doing a simple frog skeleton 2D carving and the HD4 cut a couple of random patterns that we not a part of the G-code that I can tell... Why would it do this?

Frog body with random circle

Frog Head with random circles

Frog.tap

File from Vcarve

(516.36 KiB) Downloaded 191 times

[Father2Sons]

What the head was supposed to look like....

[Bob]

f2s,
Would you please post your crv file. It would be easier to dissect your frog that way, and see what's happening.
Bob

[Kayvon]

Post the .crv anyway, but I don't see anything causing the circles in the gcode.

[Rando]

Just taking a guess here, but those look a lot like spiral ramps. Sometimes when the cutting parameters tell VCarve (and others) to do the spiral ramp for the lead-in/entry, and if there's not actually enough toom, it will spiral into the material in a "bad" location. Any chance the toolpath has a spiral plunge setting somewhere in there? If that's what going on, you're going to want to either move to straight plunge, or read-up on setting the plunge location in the toolpath vectors. It's a bit obscure, but in the help somewhere.

Regards,

Thom