Hi, the model I was working on had already features of engraving (some text written on it in Arial 10 font), but the milling operation I was about to create to use those existing engraved letters on model, was giving me the geometry is invalid error. No matter which letter I choose.
the model was in stp and opened and saved as solidprt.
The letters were consisted of many little chopped up lines, so the procedure for creating a chain was "auto - constant z", so it would automatically select all those tiny lines and I wouldnt have to pick them up manually one by one.
I ended up deleting the milling operation and creating new engraving operation for each word by creating new geometry, adding text, picking start location and angle and thats it.
solidcam 2015