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P4 Heatsink

| Batteries, Capacitors, Heat Sinks
  1. #1
    spinroch started this thread.
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    P4 Heatsink

    Don't throw in the aluminum bin without checking for Cu first

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    F1 Recycles

    Electronic/Electrical/Mechanical Recycling
    www.f1recycles.com


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    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

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  5. #3
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    Quote Originally Posted by Bear View Post
    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.
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    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

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    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.
    WARNING: User tends to exhibit open disrespect for authority and a
    generally mellow demeanor inconsistent with the gravity of the situation.

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    is it the fins too, or just the base?

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    Quote Originally Posted by Bear View Post
    is it the fins too, or just the base?
    just the base my friend. the rest sheet AL me be thinkin'.

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    Thank you Dave

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  14. #9
    spinroch started this thread.
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    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
    Last edited by spinroch; 02-24-2014 at 04:09 PM.

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    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#

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    Any ideas how to easily remove Cu plates? Slugs are easy, tho plates give me headache.

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    Quote Originally Posted by kuller00 View Post
    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.
    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

  19. #13
    spinroch started this thread.
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    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
    Last edited by spinroch; 02-25-2014 at 07:00 AM.

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    Quote Originally Posted by kuller00 View Post
    Any ideas how to easily remove Cu plates? Slugs are easy, tho plates give me headache.
    I bust them off with an air chisel. Very fast, did a bunch a few days ago, netted 23 lbs of copper.

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    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.


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