General AC question: R12 evac?
 

So I'm taking out everything from the engine bay in preparation for a full paint job.
This includes all the AC system (lines and all).
I was wondering if there was a DIY way to collect the R12 from the system as I don't want to let it into the atomosphere.

Anyone have any suggestions?
The motor is out of the car right now so taking it to an AC shop is a bit of a hassle.
It was blown to begin with so it wasn't driveable or I would have taken it to a shop first off.

Thanks!