This is by no means a new trick, but it sure bears repeating – especially when you’re in need of a really long clamp. Threaded black pipe is expensive, but you don’t have to buy long lengths of it just to make a long clamp. Instead, buy a few 3/4-in. black pipe coupler fittings and keep them on hand. Then, slide the tail jaw off of two pipe clamps, thread the coupler onto both pipes and voila! You’ve got an instant, super-long clamp. You can find couplers at any home center or hardware store, and they cost less than a dollar each. Just try doing that with a bar clamp!
– Chris Marshall