An homage to Cyanide and Happiness's original F=Bomb, and inspired by https://www.thingiverse.com/thing:2989919
I made the F protrude instead of indent to make it easier to see. All bottom horizontal edges of the F are chamfered so no supports are required to print. I added some "rivets" to give it more detail.
Printer: Custom Built I3 clone
Rafts: No
Supports: No
Resolution: .2
Infill: 10%
Notes:
Don't drop it, especially around your parents!
The author hasn't provided the model origin yet.