Spent probably 4 hours today searching but couldn’t find a solution. Re-cut several times.
I verified it is a 1/4 90 degree V-Bit. It is laser etched right into the side stating such.
I have a PNG i convert to an SVG and manually draw carve paths on in Estlcam to ensure they are clean.
You can see the tool setup and the end result as well as the gcode generating to draw these little ears. Before those ears were drawn at the end of the gcode the thing was perfect. Not sure why it is drawing the dog bones/ears/overcuts. Any help would be appreciated.
My first thought would be the angle on the V-bit was wrong, but you said you verified that.
Maybe the Z distance is not correct, due to steps per mm being wrong or the leadscrew lead distance not being right? It’s a long shot. Maybe your pockets are shallower than you are requesting and it’s not obvious except in the corners.
Move the bit so it is just barely touching the surface and then command movement upward by say 50mm. Measure how far it has moved and see if it is correct.
I agree, typically it is a bad Z value or warped material, or bad angle of the bit.
I think a lot of people put on a non flat workpiece or have a non level bed. Vbit carves are some of the most Z accurate work we can do. It the tip is not exactly where it should be you get the dog bone or rounded corners. For a nice sharp corner, it is best to have an ultra flat surface.
For yours I do think it is the angle, some programs expect half the value they are listed as.
Estlcam asks for total angle between faces, some bits have listed the angle as half. So opposite your example. I think that is because a 90 degree bit makes a 45 degree chamfer.
I fyou already adjusted your steps per mm this will not change anything, if you did not get those steps correct it would absolutely cause this.
When you move the Z axis 50mm (2in) is that how far it moves?
initial reports are good after swapping to 4 lead. i never adjusted my zsteps. wasnt thinking. was just assuming if it was wrong it would still carve just not as deep. clearly not the case.
