Here is a good tip that I figured out for myself & thought I'd pass on to you other members. Frequently, when one places the silver focusing ring on the plastic or metal lens housing, they screw it all the way on snugly so that when they turn the silver adjustment ring, they are actually turning the lens housing, hence moving the lens in or out. All good & well until you want to focus on something to burn up close, & you find out that you can't screw your lens in any further 'cause you screwed that silver ring on so far. So here's my simple tip; go to any automotive shop, & for only a few bucks, buy a 0.20 fl. oz. bottle of the MEDIUM STRENGTH THREAD LOCK. All you need do is apply 1 or 2 tiny drops of this liquid on the outer most threads of the collimating lens, & screw on your silver focusing ring, but only about half way. Set it aside to dry 24 hrs. Now you can screw your lens in as far as the diode inside if you want to. If you want to remove the silver ring, the bond is easily broken if you hold both the lens housing & the silver ring, & twist in opposite directions. But unless you do this, the bond stays quite tight. Just don't use alot, a little goes a long way. I use mine around the house & car, wherever I need to make sure a nut doesn't come loose on it's bolt or screw. Try this out & I'm sure you'll be happy with the results
rob / phoenix77
