BETOOLL Heavy Duty Cast Iron Welding Angle Clamp - 90 Degree Right Angle Clamp for Metalworking, Woodworking, and DIY Projects - Perfect for Welding, Fabrication, and Carpentry

This thing is a solid heavy casting that can take the heat and abuse of a commercial machine shop.That the angle clamp is solid makes the inevitable tweaks worthwhile. The black mild steel plates on either side of the threaded pivots aren't countersunk. The retaining screws are intended for 82 degree countersinks which makes the proud screw heads into a nasty snag point. A quick touch with a countersink allows the retaining screw screw heads to lie flat.A minute or two with a file or hand grinder will knock off the casting flash that otherwise could blemish the clamped stock.The right angle is accurately milled and the copper plated Acme thread smoothly delivers anything from a delicate to solid grip on the up to 1 3/16" stock to be welded into a right angle. The clamp really does tolerate welding different size stock.As a bonus a single clamp lends itself to making an exceptionally solid jig for abrasive or blade 45 degree stock mitering. We quickly made a jig to reliably miter square 1" tube frames for TIG welding into case frames. To our horror my spouse used the same jig to build up a bunch of wooden picture frames -- the accuracy was perfect, our fear was that the inevitable grease and metal chips in a machine shop would damage the prefinished frame stock.All-in-all and excellent tool that's worth the purchase cost and a few minutes of tuning.