I just started with LibreCAD yesterday and joined today (May 18,21) Looking to use this for CNC wood carving.
And, of course, I already have a problem I don't understand.
I grabbed a DXF and edited it to suit me, then saved it, and opened it with some CAM tools. The simplest view is with a tool called CAMotics which opens the DXF, but I have used other tools showing the same problem.
My design is 1.5 to 5.5 aspect ratio (I'm using inches). But the saved results wants to start the CNC about 2"/51mm lower on my y axis ( off the wood I want to carve). How do I move the Y axis starting point. I'm not really sure what to look for in the settings and manual to see how to change this.
With a little experience in CNC machining I would say, that this is the worst solution.
Usually it's the job of the CAM tool to place the object correct into the machine space.
Or CAD and CAM work with their absolute origins and the machine has capabilities to relocate the processing origin to the mounted object.
Anyhow, it depends on the used tools and machines and their possibilities to find the best place to solve it.
At least, when it works by moving the drawing, everything is fine.
I think the issue is that my source data has a description all in the 3"x6" range. So the first coordinate would be at point 3"x3". I tried copy to new document and I tried moving the item around but it still seems to maintain those relative points.
I don't have any experience with CAM. But could it be the path from the starting point displayed in the simulation just shows the journey of the tool from the parking position to above the workpiece with lifted tool, before been lowered and really cutting into the material?