When it comes to making models, few materials are as diverse (and yes, smell as bad) as Bondo. It sets up quickly, can easily be machined and shaped and sticks to just about anything.
Here industrial designer Eric Strebel kicks off his series on Bondo’s basics, demonstrating how he mixes, tints and molds it, what it can (and can’t) be applied to, and how he does it. There’s also some good backstory on the stuff.