Posted by Gus Pratt on August 26, 2000 at 09:09:09:
In Reply to: Re: Venting Piston Valves posted by SilentTuba on August 25, 2000 at 19:28:06:
I also used a Dremel tool when I vented the first valve of my 3 valve Eb Besson. I chose to use the cone shaped metal cutting bit when venting my valve. It was fine for this particular horn, but I'm not confident enough that I would use it on a better horn. After drilling the hole it took some work to get the valve moving adequately again, although I believe it was just metal particles. Next time I'll do a more thorough job cleaning the piston after using the Dremel.