So... I did a little research... You would have to hit The Tool Swing with around 87,000 psi. For a failure. The 2 platforms are held up and together with two 5/8" 1018 cold rolled threaded steel rods with each one having 43,500 psi of "shear strength". The hardest sledge hammer hit is going to be around 15,000 psi (from what Google said). There will be a little variance from these numbers because of the distance between the two platforms. But.... That's part of the design. To keep that distance as close as possible. It's less than 3/8 of and inch. The swing arms are 3/8 x 1" mild steel with 1018 1/2" axles. So I challenge all of you engineers here to let me know what the psi would have to be for a failure. I'm super curious. Let me know if there are any other things that may have to be factored in. Thanks again. Rich
