Of all the punch-list items a project car can have, none of them take as much time, skill, or patience as doing body and paint. Building an engine or even fabricating a chassis doesn't come close.

Truck beds have a difficult life. They live out in the elements, they have things dropped and thrown on them, and generally get beaten up while being the reliable, utilitarian vehicles that they are.

Before I get rolling, I want to clear up one thing: Bondo is a brand name, though it's commonly used as a general description referring to any and/or all body fillers-kinda like Kleenex is to tissues.

Applying control-joint filler demands balancing hardness to transfer loads, flexibility to move with the slabs and application timing to minimize tearing. A control joint (or contraction joint) is ...