Found my new limit yesterday. 2 hours work, then breakfast and a video, then 45 minutes, and hour’s rest then another 30 minutes and into a cold shower, then bed. So I guess my practical limit is now two hours a day while the day is still cool. Still, better than before the refresh.
About Art
55 years old. By training, ability and experience I am a master toolmaker. My most recent projects include designing and building a process to grind a G rotor pump shaft with four diameters and holding all four diameters within plus or minus 4 microns of nominal. This was an automated process using two centerless grinders refitted to my specifications using automatic load and unload machines plus automatic feedback gauging. I also designed and built an inspection machine to check for the presence and size of a straight knurl on a hinge pin using a vision system for non-contact gauging.