There are a lot of tools available for removing or cutting spot welds, and some work just fine. I say “some” because there are so many available, and many of them are complete junk that will wear out or break within the first dozen spot welds you try to cut. Of course, there are higher dollar spot weld cutters that should live longer than the cheap ones, but I’ve rarely found them to be much more effective than a couple of drill bits. Since you have to get a center point for most good spot weld cutters to work, you already have to go through and use a pilot drill bit to at least get a dimple in the material. Then you get the cutter out and use it to cut just through the top level of the weld. But some people prefer to just use two different drill bits instead.
In this video from Fitzee’s Fabrications you will see just how effectively you can remove or cut spot welds if you know how to use the right tools. Check out the processes below.