1 inch outer diameter Led module.

thingiverse

So this is a no-frills LED and lens holding module and base that I threw together in about 20 minutes. If it doesn't fit, that's probably why, but everything should work just fine. To clarify, it's designed to hold an LED on a Starboard and a lens for prop lightsaber building purposes. Unless you're printing with metal filament, be cautious of heat transfer issues, as LEDs do get warm. I'm planning to cast the base in a tin-zinc-copper alloy (think melted pennies). If you use thermal glue and attach a penny or two between the LED and base, it might work for heat dissipation, but don't say I didn't warn you if it melts.