RustyW

I recently got a new Hitachi KM12SC router kit. I've never used a plunge router or template guides before. But have been using the heck out of them now that I have them.

I made a quick jig for shelf pin holes out of 1/2" plywood with a series of 1/2" holes. Using a 1/2" guide (came with the kit-not brass) and a 3/16" bit I plunge the holes into the cabinet side. It works great but after 2-3 holes I see the locking ring for the guide start backing off. Luckily I can clearly see it getting loose and have not had it come all the way off. Now I'm the guy that gets handed the jar that no one else can open but these wont stay tight.

Does anyone know of a trick? Or something that can be put on the threads? Thought about a rubber band (O-ring) but hav'nt got around to finding one. Or should I just get brass?

Thanks Rusty