Wait until people find out you were a mechanic 10 years ago, and even though you sold your tools, and left the industry, you still should work on their car (free of course). "Oh and I'm going to need my car, so can you do it at my house after 10:00?"....
Your also expected to pay for expendables and special tools and any parts they forgot. They'll pay you back of course.... someday.
That said, I say one thing to people who ask for reloads:
"No, if something goes wrong, regardless of the cause, I'm getting sued. I don't care if you promise you won't, your insurance company will. They will win. I will pay. I can help you with buying equipment, setup, and show you what you need to know, but that's it".
For anyone who has never been injured, or had a dependent injured here is what happens,
1: Go to hospital/doctor
2: Get billed.
3: Get hounded by your insurer to tell them how it happened and who they can sue.
4: Get told by your insurer there may be a discount on the bill if they can recover money. There probably won't be anything for you.
5: Repeat until you give up or lie.
99% of your friends will sell you out as soon as the medical insurance company says that they should. Once they hear the guy on the phone say "settlement" and "oh the insurance will cover it, your friend won't have to pay a thing" you can bet your getting sued.
If your friend doesn't have medical insurance, a few dozen aggressive collection calls and a financer at the hospital saying the same thing will get the job done.
There is too much to go wrong.
I once had a box of reloaded .45 ACP.
It was NOT "up for grabs" as the guy said he thought it was.
A 1911 blew up that day in a minor way. No real damage, but a lot of smoke, and the gun was locked up bad.
I asked what happened and he said without a hint of hesitation "It was your reloads!, there's something wrong with them!"
A few minutes of hammering and I got it open. It was a .40 S/W. I don't load .40, and I had no .40 that day. It was his, and he put it in a .45.
Immediate panic following the incident was "its your fault, you owe me!".