Hi,
I'm relatively new in the world of CNC.
I'm working on carving a number on wood. To do so, I drew a number, "exploded" it, created a CAM path and exported it. But when I load it from LinuxCNC I see the that the cutter path is different from what I expected. In QCAD/CAM, my path is on the outside of my number "2". But when I load my exported path inside linuxcnc, at some point, but only at a specific point, it is actually cutting inside of my number "2".
I'm hoping that someone could explain why this happened so I can learn from this. Also, how can I fix this?
Thank you,
JSRoy
Behavior different between QCAD CAM & Linuxcnc
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Attach drawing files and screenshots.
Post one question per topic.
Behavior different between QCAD CAM & Linuxcnc
- Attachments
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- mince_2.nc
- (7.71 KiB) Downloaded 499 times
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- path_In_LinuxCNC.png (15.96 KiB) Viewed 6393 times
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- path_I_Expect_QCADGenerated.png (6.49 KiB) Viewed 6393 times
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- test228.dxf
- (364.08 KiB) Downloaded 486 times
Re: Behavior different between QCAD CAM & Linuxcnc
When using G41/G42/G40, it is possible that a controller interprets things differently than QCAD/CAM does, especially when the path intersects itself as is the case here. You will likely just have to clean up your path in that area to create a clean corner (use Modify > Trim Both):
Re: Behavior different between QCAD CAM & Linuxcnc
Hi,
I'm not a QCAD/CAM or LinuxCNC guy but this first screenshot captivates me ....
You are sure that LinuxCNC is using the same Mill diameter? If this solid white circle in the screenshot represent the tool diameter then it looks way to big and will mill INTO the Number 2 ....
And the milling start point is also correct? I assume you are using a 3/8" mill. If so then the start point should be somewhat around x 0.1875, y 0.1875. Regarding the screenshot it's much less than 0.1875. That would lead to a milling INTO the Number 2 ....
And the dxf drawing has mostly up to 6 identical stacked lines ....
Just loud thinking .....
I'm not a QCAD/CAM or LinuxCNC guy but this first screenshot captivates me ....
You are sure that LinuxCNC is using the same Mill diameter? If this solid white circle in the screenshot represent the tool diameter then it looks way to big and will mill INTO the Number 2 ....
And the milling start point is also correct? I assume you are using a 3/8" mill. If so then the start point should be somewhat around x 0.1875, y 0.1875. Regarding the screenshot it's much less than 0.1875. That would lead to a milling INTO the Number 2 ....
And the dxf drawing has mostly up to 6 identical stacked lines ....
Just loud thinking .....
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Win10/64, QcadPro, QcadCam version: Current.
If a thread is considered as "solved" please change the title of the first post to "[solved] Title..."