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Sch3mat1c 7th February 2005 11:45 PM

Homemade heatsinks
Anyone want a homemade heatsink? About 12 x 3 x 1" and four pounds of cast aluminum.

I can cut that backplane off, need to do that anyway...


Stocker 8th February 2005 02:47 AM


Experimenting in the back yard? :D

Sch3mat1c 8th February 2005 03:26 AM

Yeppers. Made this for the induction heater project, since I need some thermal mass for the transistors carrying a kilowatt or three...

- I can also make one with vertical fins, which would be a bit more helpful since no one seems to like forced air cooling.


Stocker 8th February 2005 04:14 AM

Forced air cooling keeps me cool during the summer in my house. Context!

Anyhow, is that as smooth as you can cast the surface? Personally I think it's :cool: to do your own metalcasting...

But my wife would take one look and say :whazzat:

and make me:smash:

Gaucho 8th February 2005 04:57 AM

A true DIYer
It's very cool that you do your own casting! Did you DIY your own blast furnace too? :)

Sch3mat1c 8th February 2005 01:46 PM

Yep, it's all on my website under casting:

The finned surface is *very* rough indeed, I'm going to try some finer sand. Those grooves are pretty tight and the coarse system sand I use isn't very good at it...

How 'bout $20 each?


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