How to Remove a Spot Weld
- 1). Measure the diameter of the spot welds to be drilled out with a tape measure. Locate and purchase a metal drill bit 1/8 to 1/4 inch larger than the diameter of the spot welds.
If you would like to use a more specialized tool that will keep the back piece of metal intact, use a Blair Spotweld Cutter. Multiple sizes are available, so choose the size closest to the size of the spot weld (instead of choosing one that is 1/8 to 1/4 inch larger). - 2). Make a small divot in the weld with a pointed metal punch. This will help the drill bit stay in place over the weld while the drill bit spins.
A Blair Spotweld Cutter will need to spin in a punched hole as well. But a spot weld cutter cuts around the weld instead of through the weld like a regular metal drill bit will. - 3). Place the tip of the drill bit or the spot weld cutter into the punched divot and begin drilling. When the drill bit or the spot weld cutter has cut through the metal, keep the drill bit or the spot weld cutter spinning while you remove it from the metal.
- 4). Repeat Steps 1-3 for each subsequent spot weld that must be removed.
Remove the metal debris and shavings with a vacuum (either a regular household vacuum or shop vacuum).
