I am hoping you might be able to help me with this drawing, I have used it to make the former with a CNC machine but the machine is a bit jittery so i am hoping there is a way to smooth these lines out. Could it be an export issue with resolution perhaps? Any thought hugely appreciated.Rear former pair…3dm-James…3dm (102.3 KB)
You didn’t mention what intermediate file format you used - and that is probably where the issue arises. The curves are degree 3 and as such ‘smooth’ (*) in Rhino.
(*) everything is relative - If you look at the curvature graph in Rhino you will see that the curves are not necessarily very smooth but I don’t think that is what you are talking about here…
Thanks Wim, just the standard rhino file, should i try exporting in say, STL. What would be considered the best way of preserving the smoothness from my drawing to the CNC company?
The STL format doesn’t carry curves - only meshes. Preferably you’d use a format that carries splines / NURBS.
You should check with the CNC company what file formats are used - that will give you a good start (but perhaps not the final answer).
i have quite a few components CNC cut or laser cut from outside companies, if it is just flat 2d profiles being machined I always export to DXF format, never had any issues to date, I always supply them with a PDF document of the drawing too, with all the basic dimensions so they can quickly check no scaling problems
might be a good idea to just ask your CNC company what file formats open best in their CAM software, I’ve also had a few things done on 5 axis CNC, if I remember correctly IGES and STEP files seem quite versatile