Tapping the Bottom Plate

Utilizing the same procedure as the top plate, the 3/8-18 NPT port was threaded into the bottom plate and the whole lot was dry fit together. Some more welding practice is going to be done in the near future to prep for welding the fuel tank. The tank needs to be near perfect so there is marginal room for error. The series of pictures seem to dictate that tapping was done on the mill table. It was not. The tap was squared up with the mill spindle and the first few threads were started to get them straight. The rest of the tapping was done in the bench vise with wood spacers to protect the plate.