Now that the nozzle molds are finished, making the core spindles is a relatively easy task. These will be used to create the hollow inner core of the motor. Compared to the time spent machining the nozzle molds, this was a relatively quick task. Probably less than 6 hours in total. Simply start with a rod of stainless, bring it down to nominal size, then file a rounded point and tediously sand the surface with finer and finer grits to bring it to a smooth finish.
