I have quick question. I have a model object that I would like to build a part around. Thus I would like to insert the model into sketchup and draw all around it but without every really interacting with it. Ideally, I could snap measurements to its dimensions, but again, not really merge lines with it interact with it. Is this doable?
Make that object a group or component and nothing else will stick to it. It’s the same as other entities you don’t want to stick together and a fundamental part of working in SketchUp.
Along with Dave’s recommendation, if you decide to make the object a group or component, you will be able to LOCK the component object so it can not be moved, edited, etc.