I am getting a Z move when GRBL Offset In Coding

[Andre914]

I am getting a Z move around one end of a single polyline.
I have deleted and redrawn this polyline and am getting the same Z move that shows when using a 3D simulation.
I don't know how this is possible from a 2D CAD drawing.

I have attached the design file.
Please watch the 3D simulation of the Small Pocket 1 and 2 Toolpaths.

Version:
3.27.6.0 (3.27.6)
Build Date:
May 17 2022
Revision:
39d0e9f
Qt Version:
5.13.2
Architecture:
x86_64
Compiler:
MSVC++ 14.0 (2015)

I'd appreciate any help.

Andrew

[Husky]

I am getting a Z move around one end of a single polyline.

You are using QCAD/CAM. You created a Tool paths what means QCAD/CAM has to use Z values for e.g. a cutting depth. With other words - those Z values are correct.

[Andre914]

Yes,

I created the drawing in CAD and am using CAM to create my cutter paths in GRBL Offset In.

The Z depth for the start point and cut depth are correct.

It seems there is a certain area of the drawing that has a Z level set from something else and the Cutter is stepping over this restricted area.

It does it on several Polylines near the lower left corner of the detail parts.

[CVH]

Hi,
On layer 'Right' there is a TAB at (-3.82881441,-0.85203687).
Practically that is a block reference, handle 0x1ae.
The entities that make up the block are on Layer 0.

See:
https://www.ribbonsoft.com/en/tutorial-qcad-cam
'Working with Tabs'

For 1 unit long QCAD/CAM will retract 1 unit up from zFinal, see block reference entity custom properties.
TABs are global things and influence all toolpaths that cross or come near by 1 cutter radius + 0.1 units.

Visible or not but that will change in the near future.
See Changelog: https://www.ribbonsoft.com/en/documentation/changelog

Regards,
CVH

[Husky]

The Z depth for the start point and cut depth are correct.

For what is a 0.025 Safety Z Level good for? And Save Z is set to 0.025. Why are you flying that low ....?

... and the Cutter is stepping over this restricted area.

What is the restricted area?