Grooves toolpathing issue (OnShape, Kiri:Moto, Krabzcam)

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Smart folks!

I have the following Part 1: Onshape

Have tried various ways of sketching and extruding it but all ways wind up with the same problem. If I create a drawing and export an SVG or DXF and bring it into Krabz it tells me “Warning: SVG contained ignored invalid paths.”

If I try to use Kiri, it will simulate an outline operation just fine but will not cut the grooves using pocket or contour.

I’ve also tried importing the SVG/DXF into Inkscape and indeed I’ve found disjointed paths but my attempts to fix them (various group/ungroup, join nodes, path>combine) have been overly cumbersome.

I’ve gotta be doing something simple wrong.

<3

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Hi, I think that warning message is a bit inaccurate.
I belive it only means that some of the path have been glued together.
KrabzCAM will glue together two open paths if they share the same color and two endpoints are very close together.

So unless you see anything missing, you might be good to go.
But it’s probably a good idea to use ncviewer or some other tool to inspect the gcode before running it.

-M

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Huh, interesting. Editing the color in Inkscape has appeared to work. Wonder if there’s anyway to get it out of OnShape color coded already??

Thanks @mkrabset!

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Ok followup Krabz question @mkrabset …

I can’t get it do either a pocket or a inside profile on the grooves (black lines) in this file. Any ideas? Outside profile of the blue looks great!

color-test-bakeware-rack

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what is the size of bit that you are telling it to use compared to the space
between the lines? if the bit doesn’t fit, it won’t try to cut there.

David Lang

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Quarter inch bit to cut a quarter inch dado/rabbet @dlang

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many cam systems want a little bit of clearence, just for a test, tell it you
have a slightly smaller bit and see if those problem areas show up.

David Lang

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There are more than one ‘black’ color in the svg… #000000ff vs #1a1a1aff.

Try the following:

  1. Load svg into krabzcam
  2. Select the blue part and move it away… (gx500 moves it 500 units to the right)
  3. Select everything and press “Save SVG”
  4. Load the saved svg into inkscape, select everything and ungroup
  5. Select the black parts (the grooves) and set color to black for everything selected at once
  6. Save svg, and load it back into krabzcam.
  7. Move the blue part back (gx-500)
  8. Save svg again

You should now end up with this svg, which only contains closed paths

-M

color-test-bakeware-rack-fixed

image
image1437×1441 298 KB

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