Darrin wrote:

therefore, the loaning is going to come to a stop.

Tell him that you'll lend him the money to go rent a tool and, to make
sure neither one of you will forget (with busy lives and all), he can
leave you a post-dated cheque.

You are suggesting this to circumvent the possibility of him feeling
bad if he accidentally breaks one of your tools, which could leave you
in a lurch. He wouldn't want that to happen would he? Being
friends-and-all....

I have never minded lending a helping hand, but I thoroughly despise
free-loaders. Sometimes that is a very blurred line.

r