Brownells Gun Techs™ Steve Ostrem and Caleb Savant tell us about a special gunsmithing tool that comes with every Brownells order at no extra charge. It's a special gun parts organizer..... that you cut from the box your order came in. Let's say you remove a part from a gun that's held on by a couple / several screws (or pins). Trace the outline of the part on the cardboard, including the screw holes, then poke the screws into the corresponding holes.
Why is this important? Older guns have a LOT of screws that tend to look alike once they're off the gun. For example, the side plate screws on a Smith & Wesson revolver look alike, but the yoke screw is actually specially fitted, so you'll want to make sure it gets back in the right place.
Caleb once worked with a gunsmith who kept a whole drawer full of cardboards for different gun models. Whenever he worked on a specific gun, he pulled out the relevant cardboard and worked secure in the knowledge that he'd get the right screws back in the right holes.
Bonus: the cardboard is as an excellent mask for painting or applying Brownells Aluma-Hyde® to the heads of the screws without fouling the threads. You can just hang the cardboard in the curing oven, too. Also great for holding the screws when sandblasting.
The best part: this tool comes FREE with every Brownells order!