setlab Posted December 13, 2017 Share Posted December 13, 2017 I'm building a stand for my #6 flypress and am wondering if I'm building it to light duty. Looking at my steel pile, I have a bunch of 4"x4"x1/8" square tube for the leg columns/bracing and some 1/4" plate steel for the top of the stand, I plan on having 3 or 4 legs bolted to the floor. Will those 4x4 legs probably keep up the the flypresses torqe without distorting? Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted December 13, 2017 Share Posted December 13, 2017 Without specifying the make, the number of your flypress is not specific. My number 2 is a Hoskins #2: stands 7' tall and has a 42" toroid as the drive weight for instance. It was really larger than my pickup should transport. Quote Link to comment Share on other sites More sharing options...
setlab Posted December 13, 2017 Author Share Posted December 13, 2017 All torque from a #6 should be close to the same no? But it's a deep throat Norton. I don't think it will twist the table legs out of square, but all the fly press tables Ive seen are pretty heavy duty. Quote Link to comment Share on other sites More sharing options...
zeeko Posted January 11, 2018 Share Posted January 11, 2018 I'd think 4x4x.125 would be fine if you add some good cross-bracing so the legs can't twist, especially if it will be bolted to the floor. It's all about the torsional load. Quote Link to comment Share on other sites More sharing options...
caotropheus Posted January 15, 2018 Share Posted January 15, 2018 I got my flypress from a friend that gave it to me. The flypress was attached to a flimsy stand made out of angle iron with simple horizontal bracing and wood top. The angle iron legs and top braces dimension is 70 mm X 70 mm X 5 mm. The bottom horizontal braces are only 40 mm X 40 mm X something thin. The press weighs in the region of 400 kg and the "flywheel" bar is 1.5 metres long with 12 kg for each counterweight. While first trying the press in the original setup the stand would twist on itself like a "cork screw". I reinforced the stand with some more vertical and diagonal braces and the stand is now very sturdy. I even reinforced the angle iron by welding 12 mm X 12 mm square stock I had laying around. Setlab, so, I think that if you put some diagonal braces in your stand with the material you have available, the stand will work fine, but you have to bolt the stand to the floor. Quote Link to comment Share on other sites More sharing options...
Glenn Posted January 15, 2018 Share Posted January 15, 2018 If you overbuild the stand there is no problem. If you under build the stand and torque twists the stand, the stand may fail or collapse. This could injure someone or damage the flypress if it hits the ground. Quote Link to comment Share on other sites More sharing options...
JHCC Posted January 15, 2018 Share Posted January 15, 2018 The torque of the press has four places to go: 1) Tearing apart the mechanism 2) Tearing apart the stand 3) Walking the stand across the floor 4) Deforming the workpiece The design and construction of the press should take care of #1. Building a super-rigid stand with lots of mass and diagonal bracing should take care of #2. Anchoring the base to the floor should take care of #3. That will leave nowhere for the force to go but into your workpiece. May the Force be with you. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted January 15, 2018 Share Posted January 15, 2018 Lots of mass is my advice; can you stack solid steel bars on that lower brace? Quote Link to comment Share on other sites More sharing options...
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