ralf_k

Oakland, CA Joined October 17th, 2014
4 Instructables 184,977 Views 13 Comments 74 Followers

mechanical engineer by day, noisy neighbor by night.

ralf_k's Instructables

DIY Soundbar With Built-in DSP

PUMBAA - Portable Bluetooth Speaker

Tubeless Bike Tire Conversion

White Pizza: Spinach & Artichoke Hearts