Handy 75 lb Magnetic Jig
This is one of the handiest tools I have found to help with welding. I have several in my shop.
It is a very strong magnet inside two pieces of steel that have 90 degree and 45 degree angles cut into them.
When I am welding something this becomes my third hand to hold things in position while I tack weld them.
If you are new to welding be aware that metal will shrink towards the weld when it is cold. So If I clamp two bars at 90 degrees with this magnet and do a complete weld on one side of the joint. When it cools it will be out of alignment as it will move.
You can compensate by movinging it out of alignment the other way first. There is a trick to this as you have to know just how much to over compensate so that it pulls into align ment.
You can also just use the magnetic jig to hold it in place and tack weld it and adjust cold and tack weld on the other side of the joint. If you balance the weld (even amount on inside and outside of joint) the steel won't move too far.
I use the magnetic jigs when I have multiple pieces that need to be held for a tack and I can't do it with one hand. They are also particularily handy when I am welding a frame such as window grill.
Again it is slick little jig for magneticaly holding your work in position while you tack weld it.
For more information about these magnetic jigs for welding just click on the image or the link.
75 LB Welding Magnet Square