I hear ya on the fridges. They make a mess when i compact them. Foam and plastic all over the place.
Fine or coarse blades don't seem to make much of a difference in the amount of copper dust. One thing i don't much like is all the dust that gets thrown up in the air when cutting with a grinder. It's a messy job. Good idea to wear a mask, safety glasses, and gloves.
Some of the sawzall blades are more brittle than others. It all depends on what kind of metal alloy they used to make the blade with. The ones they make these days seem to be more bendy. I haven't had one break off down in the chuck for quite awhile. If they bend .... i just hammer them out flat again on a flat metal surface like an anvil. The main thing just seems to be using the sawzall the right way and not letting the point of the blade go crashing into something. It should stick out a couple of inches past the thing you're cutting on the shortest part of the stroke. The other thing would be not letting the metal bind the blade when you're cutting. It's kinda like cutting down a tree and not binding the chain saw bar. If you ever got a chain saw stuck in a tree and had the hassle of getting it free .... it would make sense. Sometimes a thing you are cutting will close up on your blade. You can feel it start to bind. It's at that point that you want to stop cutting, pull out your blade, and figure out why it's binding up on you. ( The instinct is to try and force it through but it's better not to do it that way.)
I've been using a Ryobi impact bit kit for over a year now. It's worked pretty good. I've only broken one nut driver bit. The thing about the screwdriver bit tips is that you want to find the one that is the exact right fit for the screw you are trying to undo. Once an impact bit slips .... it either boogers up the screw you are trying to unfasten -or- it boogers up the bit tip a little. You wanna remember too ... the bit tips do wear. Especially the ones like a # 2 phillips that you use a lot. They're just like a sawzall blade or a grinding wheel. They're disposable supplies. You throw em' away and replace em' with a fresh one every so often. All part of the cost of doing business.
No idea of the weights on the rads. They vary in size. Maybe a pound or two each ? Not a good money kind of thing but they eventually add up if you do enough of em'. Like most other kinds of scrapping ... it's just a quarter here and fifty cents there. Maybe a buck or two if you run across a good one. It's a lot like work.
Link for Ryobi impact bits:
https://www.amazon.com/Driving-Colle...=AH24UX00VY0MC
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