Don't throw in the aluminum bin without checking for Cu first
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Don't throw in the aluminum bin without checking for Cu first
Cool deal Spin! I have a stack of those somewhere if they didn't go in with tin or stainless, hopefully they're still back there
I knocked a bunch of those fins off and had them thrown in with my SS and the scaleman took a couple and hit them on the grinder and told me they were not SS, but didn't say what they were.Quote:
Originally Posted by Bear
I was referring to the plates Mech. I'm not sure but I think the fins are aluminum? I couldn't tell in Spin's photo if he'd hit that one or not, couldn't see any differing colors
I had a few of those that went in the AL bucket, but I did find they were heavy and the thought crossed my mind that they may be copper... thanks for confirming.
is it the fins too, or just the base?
just the base my friend. the rest sheet AL me be thinkin'.Quote:
Originally Posted by Bear
Thank you Dave
CORRECTING MY GROSS OMISSION:
They are all different!
Virtually every one has aluminum fins
Some have copper slugs (I drive them out with a punch & a hammer)
Some have copper plates soldered to the bottom
Some have copper tubing. CUT the tube BEFORE torching it to prevent small explosions!
My Motto: If you ain't sure, Grind it & See
You might try hitting the fins on the one in the pic. with the grinder, it will spark like ss but the magnet will not stick to it. Yes the ones with the copper plate are heavyer than just the au ones. I can sell those heat sinks as au/cu rads 1.30-1.40#
Any ideas how to easily remove Cu plates? Slugs are easy, tho plates give me headache.
If they are water cooled cut, or drill, a hole first then put them in an old toaster oven at 450 for 30 min. When they are done cooking use welding gloves and drop them on a cement floor and they will fall apart.Quote:
Originally Posted by kuller00
My question is if they are soldered what are the fins made of? I thought you could not solder Aluminum. Copper Nickel would transfer heat better then Stainless steel.
Chris
I use a torch: Heat it up for a minute & off it comes.
Sometimes there are little pins in it that I knock off with a chisel
Wear gloves: remember you torched it first!
P.S: aluminum can be soldered
P.P.S: Check for Tin brackets around the fins - use your magnet
I bust them off with an air chisel. Very fast, did a bunch a few days ago, netted 23 lbs of copper.Quote:
Originally Posted by kuller00
I get a lot of #2 from heatsinks, you can always tell by the weight and then a quick scratch. Mixed one go in the needs more work bucket.