Griding A Weld On Sheet Metal

For weld clean up on sheet metal there are much better tools available.

Griding a weld on sheet metal.

The act of grinding can be deceivingly simple. The removal of excess stock from the weld itself. The best tool for weld finishing is the flap disc. Kfs 125 ce ii va.

In this demo see the 2 step weld removal and paint prep process using a 3m cubitron ii flap disc 969f and a scotch brite light grinding and blending disc. But there s no getting around it. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. These are essentially layered squares of sandpaper bonded onto a plastic or composite disc.

Better surface finish than a grinding wheel or fiber disc grit for grit. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire. But the devil s in the details. Overhead work where the weight of the grinder is important.

Grinding down a weld on a formed workpiece is and probably will remain an intensely manual operation. Initial weld grinding the first stage of weld finishing is the same. Removing weld splatter without overgrinding 50 grit or finer. A100 a30 fine grinding third ste.

Welds tend to have dips up and down so holding the grinder at an angle could cause it to gouge into the metal. Hold the grinding disc as level as you can to the piece of metal. At every process upstream most precision sheet metal fabricators employ at least some level of automation. Keep your grinding disc nearly parallel to the metal so the grinder smoothes out the edges of your weld even to the sheet metal.

Made of compressed composites if they get in a bind or crack from heat they can shatter sending brutal shrapnel all over the place including your face. Another issue with grinding wheels is that they are fragile. K36 k120 pre grinding second step. The aim here is to grind the joint down to a level and continuous surface with the rest of the parent metal.

Say if you are welding an 18 gauge stainless steel sheet that is 2 2 feet in size to repair the side of your tank start by creating a weld that is 1inch long then skip 6 inches and then create a 1 inch long weld.