If you know someone who has a "3" and doesn't want to part with it, I might be able to duplicate it. (White is an easy color :-).) Now, if I could just get the colors right on these dang switch handles... Vince

might handles... I'm using silicone rubber for the molds and polyurethane resin for the parts. For a unit number button, I'd probably do a 2-part mold, with the resin injected from the end with the prongs (which would also be the "top" piece of the mold). (Then any trapped air bubbles would be in the hidden part of the result.) Most of my problems with the stuff is that it is clear initially, but is white when it sets up. Which makes it hard to get saturated colors, and hard to gauge what the final color will look like. But the unit number buttons are white -- I'd probably just leave out the dye and let the white take care of itself. The numeral would probably be painted on. (Though a black resin numeral could probably be embedded with a few more steps in the process.) Vince