I want to do a 3D print and CNC relief of some topography. When I import the STL of the terrain there are so many faces due to its high resolution and depiction of the natural topography that it really slows down my machine and causes it to crash. Smoothing edges and faces doesnt work, and neither does importing the file with merge coplanar faces box checked.
Any ideas here, I can always upgrade my machine as a last resort
I have not tried, but I understand that the Universal Importer extension incorporates a polygon reducer.
Outside SketchUp, Rhinoceros has a fairly competent polygon reducing command, and it has a 90-day free trial.
Look at it in the slicer. You ought to be able to get a pretty good idea.
You could use some various tools to increase the detaiil but it’s unlikely that you would get the same detail or accuracy. If you need the resolution of the original .stl file, you should just use it and not try to simplify it. Deal with the lagging using patience.