Originally Posted by
crhilton
You're likely to screw up when you go to drill that hole. I certainly would be.
Besides, what to do if you decide to stop using that extra tube solution?
Why? Measure, punch, put it on the drill press, drill a pilot hole, then drill the final hole. clean it up with a chamfering bit and buff with a little sandpaper. I can't imagine how that could get screwed up.
If you decide to stop, install some kind of a plug. I'd think a panhead screw with a couple of washers and a locknut would work. Heck, if you replace the rim tape, just tossing down a thin bit of aluminum strip under the new rim tape should fix it up just fine, it's just like booting a tire, except you're booting the rim.
For that matter, just the rim tape would probably do - the hole for a schrader valve isn't much bigger than the hole in the inner wall that goes down to the nipples, and they are reinforced by nothing more than my rim tape. If you drill for presta, I think the hole might even be SMALLER than the one going to the nipples.