Review on HFS Welding Clamp Clamps Aluminium by Ken Kowal

Received them just in time to turn off the project; but when I started using them, everything went wrong. The first clamped pieces did not fit together. It quickly turned out that the clamping surfaces were not right-angled. I reworked the surfaces but found that the clamping mechanism was so poorly designed that it required 2-4 extra clamps per piece to align them in the mold. The pivot bangs so high that if you're not clamping 2" parts, it rolls them with off-axis pressure. The third clip I opened crumbled in my hands. Waste of money, would happily buy branded clamps for another $10. Yes, and for welding clamps they are non-conductive, so you need to ground directly to a piece of useless metal.