Dana,
I am the culprit when it comes to the idea of making a shingle or two during the picnic. The edger needs more worm than the rest, and I think that it can not be made ready easily in the time we have.
My idea is getting the motor running first. If it runs, hook it to the mill only. This is just for show, just for a handful of shingles, with the mill run at specific times.
So getting the motor running should be first, then cleaning up the mill itself.
I looked it over Saturday rather closely, and could not find a name anywhere. I do have an email out to see how old the motor is, based on the serial number. I will post my findings here.