Check out this cool guide on how to convert a hand grinder into a silent automatic grinder. Using a some basic parts and 3D printing this is a great project for anyone who rises early and doesn’t want to wake up the whole house.

Via The Verge:

Mornings are hard for a caffeine addict. The headaches and grumpiness are bad enough, but then you have to deal with the noise of the grinder before you get the anti-migraine juice you so desperately crave.