There are a number of ways to remove a rivet if you drive it into a hole incorrectly, regardless of whether you have used a hand rivet gun or a pneumatic model You can remove rivets with a grinder and drill by grinding off as big an amount of the wrongly placed rivet as possible using the grinder and grinding wheel. Care needs to be taken here though that the metal around the rivet is not damaged. Then use a hammer and punch to push or hit the pin part of the way through the rivet. This is a starter hole that will help guide the drill bit. Then, obtain a drill bit that is a whole size smaller than the rivet itself. It is now that you can drill out the last remaining part of the rivet pin. By ensuring that the drill goes right into the center of the pin, the hole won’t get any bigger. The last part of this method is to change the drill bit to a size that is the same as the rivet and then drill out the rivet pin. You can then replace with a new rivet. You can also remove rivets with a chisel. This can be done by literally shearing of the head of the rivet when a chisel is placed flush with the metal surface the rivet has been forced into. Hammer the end of the chisel so that it starts to work under the rivet head. A punch can be used to pull out the pin of the rivet that is left. Lastly, if a rivet has been installed incorrectly, it can be removed with a specialised rivet removal tool. You will need a drill bit the same size as the rivets you are using, though most rivet removers come with a variety of drill bit sizes. Attach the appropriate sized one to your drill and slide the guide and bits in to the correct position on the rivet remover. Start to adjust the drill depth so that when it is turned on, only the rivet is removed. Then, simply drill out the rivet.