I have similar views to Al. will only lend tools to my apprentice with instructions on how to use first. I ve also learned (from experience) that lending tools to apprentices of other trades is pretty much asking for something bad to happen to your tool...but then again journeyman can be just as bad. another thing that gets me is when somebody borrows tools "real quick" and you lend them out while also letting them know that you will need them shortly also. and they never bring them back. you then go look for your tool only to find them on the ground right next to the person you lent them to, while they keep working and your waiting for your tool.