Magswitch MagSquare 165 Magnetic Welding Square Base Clamp Holder for Welding Kit, Tools, Supplies and Accessories, Magnet Switch with On/Off Capabilities, 150 lb Holding Force, black

I work as a welder in a small fab shop, and I have found the magswitch products indispensable for my work. I purchased both the 165 and the 400, and use them routinely for set up work. The 400 is too strong and creates too much of a field to weld near, so it is used primarily to stablize pieces a couple of feet from where I'm running a bead.The 165 can be used in fairly close proximity to the weld area, as the field is not as strong. These models are not designed for high heat applications so I have to be careful how close they are to the bead, and how much heat I'm running. I usually work with thin wall square tubing so it's not that much of an issue as the heat isn't cranked up that high. I do a lot of metal cutting and grinding as well, and they help hold pieces when clamps are not possible or effective.The ability to turn of the magnetic field makes them easy to clean. They aren't cheap, but if you work with metal on a daily basis, they are worth the money. Great product!

I should explain that I did not purchase this for its designed purpose as a welding return ground. I purchased it to be used as a temporary measurement ground on a metallic ground plane in an electromagnetic measurement laboratory.In the function above, I need a very low resistance attachment point on a sheet metal ground plane for measurement return purposes. This attachment point is ever changing, so the magnetic approach is perfect.For the purposes above this clamp worked perfectly. It’s easy to move and attach, offers a good wire connection surface with threaded holes, and provides a very low resistance point to the ground plane (20m).Worked perfectly for my unique usage.

I used this magnet to hold a bracket while I welded it to my trailer and it worked great. Super happy with it.

The little magnet works well on sheetmetal. However, I was anticipating one a bit larger in size than this. I do welding on plate an inch thick at times so I will have to try the 600lb and up next. But this smaller one is awesome like I said for smaller plate metal.

Amazing power full on/off magnet used to built wood working jigs on table saw

These magnets are great items to have in a workshop. They are generally designed for metal work, but I use them in a woodshop. Between my tool chest, tablesaw, bandsaw and other tools there is plenty of metal to make these useful in my shop. For example, I use them on my tablesaw (see pic) as a positive stop when making repeated cuts when I can't use the rip fence or other stop block. On the thick cast iron top, these magnets provide plenty of holding power for my purposes. They will not yield their full strength rating on thinner material, like sheet metal, but they perfect when used properly.I can't recommend these enough. I'm not a metalworker, so I can't comment on those specific uses. However, they work great in a woodshop. Imagine that!

Most of the pictures shown are not from the actual item model but from other larger models, so you might get a bit mislead. The magnetic hold power does not fast enough to be dependable if lateral force is applied, therefore it cannot be used as a stop block or fence jig.

Quality magnet, worth the price.