I put 15 min uteds as this is the speed we ran out track at, powder coating aluminum window frames, we had to do a timed run every morning and enter it into the book with our signature, the temp we kept at 170C, a deviation of more than 6C set off alarms, I know it was bloody hot as I had to run through the fkin thing when bits fell off the jigs, and it was 42 feet long, warmed up nicely when getting out the other side!!
Ace in the winter though just leave the air locks off, would get from 3-4C in factory part to 25C in about 5 minutes!!
tabetha