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I am looking for a pre-made assembly like used on a radial arm saw. I need a device that can raise and lower a small table 12-18" in a verticle direction. The table would be about 24 inches square, and have a total weight of 150 lbs. I would like it to be operated by a hand crank. The best...

Hi desertfox, I just knew someone was going to ask about the ends of the channel! Ok, let me describe what I am trying to do... The goal is to make a 82" x 148" frame that will be the support for the floor of a dump bed utility trailer. The outer perimeter of the frame is a...

Marty, My horz shear stress formula came from the Univ of Wisconsin-Stout's online "Statics and Strength of Materials" course. It's defined as follows: Horz Shear Stress = VAy'/Ib V = Shear force at location along the beam where we wish to find from the horizontal shear stress A...

Background: Hobby welder trying to design a utility trailer, no engineering background. Problem: I'm trying to determine if a 3" steel (A36) "C" channel (4.1 lbs/ft) can support a 1500 lb. point load at the center of a 78" span. Here are my calculations: Shear force = 750...