I found this forum while looking for a part for my old Craftsman router model #315.174921. I need the plastic part that locks the shaft. I haven't found one yet except on other routers. I don't want to buy another router unless it is a dead one and I haven't found one of those either. So, just wondering if someone here has one or maybe someone can 3d print one. I've tried Parts Direct but no joy there either. Ok, now that I'm here I think I'll check the place out.