forstner drill bits
Forstner bits drill a flat-bottomed hole, making them a necessary tool for numerous hardware installations where a precise depth of mortise is required. Saying that, they can be used along with a drill press to drill angled holes, holes that partially overlap, and holes on the edge of the material.
Torch brazing, as the name suggests, employs a hot gas torch on or near a joint to heat the workpieces and melt the filler alloy used to fill the gap. As the filler materials chosen should melt significantly below the workpieces oxidizing temperature, the joint is protected from oxidization.