To attach the wood top to the metal base, little tabs were cut, drilled, sanded, and welded to the base. When the top it put on, bolts will hold it down. In the wood, holes were bored and inserts were screwed into the bottom of the wood. The inserts have machined threads for the bolts. Sanding small pieces of metal can be tricky. A pair of locking pliers keep fingers safe and can handle the heat. A little belt sander works well to de-burr, and smooth the little pieces. It was amazing how much metal came off the piece from sandpaper.