I bought an old 1/2HP Craftsman floor drill press for a dedicated task. After running the tool a few times (30 minute continuous sessions), I noticed it was overheating and losing power. I would stop it, let it cool, then it would run ok for another 30 minutes. Eventually the cooling down didn't cut it and the motor would stall and hum when trying to start. I took the motor apart and found the rotor and end cap FULL of dead bees and hives. So, I cleaned it up, installed a brand new capacitor, tested the centrifugal switch, and started it back up. Now it doesn't overheat, but there is a visible spark from the bottom of the motor case (centrifugal switch area) when I start it up. There also is a faint spark when I turn it off. I can start and stop it multiple times rapidly with no problem starting - sparks every time. HOWEVER, after I use it for as long as I want (30 minutes, 60 minutes, whatever) and stop it, it won't start again. It needs to sit for an extended period (a day?) before it will start again. It does that same hum+stall; no spark. I would buy a new drill press but the jig takes forever to setup properly and would rather just get this motor fixed now that I have cleaned it and all. Any ideas? Coils didn't look burnt, though I have little/no experience inspecting motors. The pulleys spin very easily. I can even prespin them to try and help "kick start" it - they just lock the moment I flip the switch. Anyone with a better understand of electric motors have any ideas?