« on: February 01, 2013, 05:22:29 PM »
That's easy! I'll add that to the project list.I have also seen one where people made them themselves out of schrader valves (think tire valve).
That would be me. I've also lost about three or four of them, so the comparatively low price of the valve stem is ideal for me.
The DIY part is easy. Drill a hole in the cap, push the valve through, tighten the nut. Bingo!
There are also rubber "snap in" stems, but I think your drilled hole probably needs to be more precise. I've never tried those ones.