I personally use a mini Dremel tool to remove any transformers and copper spools form low grade boards. works quite well and I don't have any broken pieces of boards laying around for the kids or the dogs to step on and get cut. However, when I first started dismantling boards I used a two pair of channel locks. 1 pair to hold the transformer or spool and the other to hold the board and just ripped them off. Either way, the E-Waste yard takes them with no questions asked.
IF you decide to use a roto-type tool like I do, make sure you are in a well ventilated area and wear at least a dust mask. I am sure solder dust can't be good for lungs. Oh, and eye protection is a MUST.
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