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Before jumping straight in and showing you how to install the new floorboard patch panels from NPD, I thought I'd take a few moments to show what's used to get the job done. One basic tool used for metal and fab work is this straight cutoff tool (Snap-on PN PT250R). It uses 3-inch cutoff discs that can quickly cut through sheetmetal and tubing. This version is just a cutoff tool, but there are more universal straight die grinders (PN PT200R) that have a 1/4-inch collet, which is kinda like a drill chuck, so you can switch out different arbors or use carbide cutting as well as cutoff wheels.