Thread taps are an essential part of any mechanic’s toolbox-- mostly because, well, you will ruin some threads. Or, as is the case for YouTube user This Old Tony, you’re fabricating parts from scratch ...

Thread the needle and tie a knot at the end. Prep the rip by doing a back stitch on one side of the open seam, going all the way from one end of the damage to the other. This will prevent the seam ...