The main thing to be careful about is making sure your material is held at the correct angle before welding. If you are using tubing that is significantly smaller than the height of the jaw clamp, then tightening the clamp will tend to force the material out of alignment. The simple fix is to use spacer tubes to make sure the entire face of the clamp is engaged. | The main thing to be careful about is making sure your material is held at the correct angle before welding. If you are using tubing that is significantly smaller than the height of the jaw clamp, then tightening the clamp will tend to force the material out of alignment. The simple fix is to use spacer tubes to make sure the entire face of the clamp is engaged. |