Magnetic Bic 4 Colour cap

The original Magnetic Sharpie cap by Ender Ending Rodríguez is a great design.

I stuck one up next to the shopping list that is on the fridge and though - I need one of these for a pen. I didn't think it viable to redesign this to suit every pen out there, but the Bic 4 colour pen is a classic so I remixed the original to suit that pen.

It's this one for anyone who's not sure.

Outer dimensions remain unchanged and the unit still holds a 10mm x 3mm magnet. The inner size has been narrowed down from 12.6mm (½") to 11.8mm.

I printed .12 layers, .2 nozzle.