I see various plug holders for sale--HPC and ILCO.
Do professional locksmiths use these? I watch Youtube videos and most professionals when they're rekeying (especially multiple locksets), hold the cylinder, repin, then immediately reinsert, check for function, and reassemble... and move to the next lockset.
I guess a rubber mat can simple keep it from rolling it you have to put it down (to check driver pins, etc.)?
They just appear like they're extraneous equipment.
Pete
Sioux Falls, South Dakota