True Arcs and Circle geometries - not just a series of straight lines

[IanT]

Does anyone here use SketchUp with Shop Bot CNC router?

Yes it was how I did it, I exported as 2d after Imported it again.(won’t work!) I don’t know about other threads but I have done it! Basically as machinists we are trying to achieve a true cad arc with start,center,through,end points and one continuous curve. Sketchup doesn’t work this way of course but its a pain in the rear when you have to convert sketchup arcs to true cad arcs! HOW I DID IT: Drew some ideas in sketchup like something that would be cut on a cnc, flat to plane…

See the post above, I thought it wasn’t possible to get true arcs but you can. My workflow is different to yours but the principle is the same.

YOU MUST EXPORT AS 3D DXF

File>Export>3d Model (not 2d graphic)
Change filetype to DXF

Have a read and see what you think

Hope it helps