For sure I must be doing something wrong....

Mostly Printed CNC - MPCNC Troubleshooting
1

Ok,
Her I am again! trying to cut some 3mm plywood, I end up with kinda of piece of abstract art far away from the initial design…
Here is my workflow :

  • Creating the vector file in Illustrator (.dxf)
  • Importing the design in EstlCAM (making sure units are the same = mm)
  • Creating the engraving path and generating the Gcode in EstlCAM)
  • Loading the code in Repetier Host
  • Homing the X & Y from Repetier Host (dual endstop)
  • Manually moving X & Y to my starting point (the red cross on the picture)
  • Homing the Z with touch probe
  • Modifying Gcode with G92
  • Launching the code

    I am sure the ccurves in the green rectangle can be fixed by adjusting plunge and feed rate.

    But for the size difference between original design and cut…as well as the offset at each pass?

    Any clue?

20190708_105055.jpg
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repetier.jpg
repetier.jpg1366×768 231 KB

estlcam.jpg
estlcam.jpg1366×768 181 KB

illustrator-design.jpg

2

Tried the same job, same wood, same tool, bit starting from X,Y,Z “Homed”, cutting square now…

20190708_125608.jpg
20190708_125608.jpg1548×2064 343 KB

3

The cuts on top it’s losing steps, so when it does that, may as well stop. Nothing will line up again. Try decreasing your cut depth.

4

[quote="barry99705,post:3,topic:10819"] The cuts on top it’s losing steps, so when it does that, may as well stop. Nothing will line up again. Try decreasing your cut depth.

[/quote]

Looks like his DOC is 0.5 or 0.2mm already though. It also looks like the surface is not close to flat either, looks like it's much lowered towards the origin than the opposite side too.
1 Like
5

You are using a Vbit (CAM says you are) and want to engrave that or cut it out?

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6

and 1mm diameter?

7

Problem fixed with tweaking speed, DOC, etc…
Thanks to all!