I guess I'm being too cautious then. See, my reservation about a paper clip might have been that they cut them from rolls when manufactured and a tiny bit of metal gets extruded or pushed sideways leaving a little burr. I'd be afraid that that burr would/could scratch the inside of the hole and begin to cause problems. Maybe I need to be a bit less anal...lol...

But yes, that's the good thing about building your printer instead of just buying one assembled, you know how to take things part from the get-go. It's not hard for me to pull the hotend off for a soaking.