On this day in 1922 Hollywood producer Hal Roach introduced Laurel and Hardy, a couple of nuts that were always in trouble. If you're ever used a hacksaw to shorten a machine screw, a carriage bolt or threaded rod, you've had nut troubles too. You discovered the nut wouldn't go back on once you?d sawn through the metal fastener and wrecked the threads. The next time you shorten a screw, bolt or rod (by sawing), thread the nut onto the fastener first -- well above where you'll be cutting. Then, after sawing it to length, back the nut off using a wrench. As it goes along it will form the threads again and shear off any metal burrs. And that's the On The House tip for today.