@pilou said:
Uses free Fusion 360, Onshape or FreeCad...
the export as OBJ
then reload in Sketchup
Thank you! For some reason the imported model was cleaner which allowed me to do what Dave R suggested. I was able to reduce the size of the model from 35 mb down to about 4 mb 
I'm not authorized to send a private message and the file is too large to share. Here is a link to the file:
Web word processing, presentations and spreadsheets
(drive.google.com)
The model was originally a .step file and I imported it into SketchUp. The way it got imported is very messy.
I'm wondering if there is a tool or an extension that could only extract external face of a rather detailed model. I don't mind the details, but its slowing down the program quite a bit.
In other words, I'm only interested in the external dimensions of the model as it is simply a part of large system of equipment/instruments.
