Fair warning, I am not very experienced with SolidWorks as I have zero technical training in CAD use. I use a student version with my Veterans discount. I do work as a union millwright so my mechanical knowledge is pretty decent.
I am building a catapult to throw golf balls. For some of the parts such as bearings and such, I am using the downloadable files from Mcmaster Carr. One of the parts, a shaft collar with part number 6436K146, I want to delete the two screws and the bottom threaded half. The problem is, the way it was built. It seems to me that both halves were created from a single extrusion, then drill holes and then the screws added. I am using the top half only as a sort of very light weight pillow block bearing. Any suggestions on how to accomplish this? Or, would I be better off just creating a simplified top half myself?