Heatsinking the HP-UHU

**jcdammeyer** · 07-14-2008, 11:15 AM

Originally Posted by H.O

Hi Irfan,
Yes, I have drawings for the backplate and the clamps - just need to clean them up a bit....then I'll upload them here.

Thanks!

/Henrik.

Hi Henrik,

Do you have a source for the heatsink material?

Thanks

John

**contactirfu** · 07-14-2008, 11:29 AM

I am planning to use Hylam, Henrik even I had that Q, seems like some sort of epoxy cloth of fiber?

**H.O** · 07-14-2008, 12:36 PM

Hi guys,
I got the heatsink from a scrapped MIG-inverter, I managed to squeeze out three HP-UHU sized heatsinks from a single large one - it was the mother of all heatsinks.... A qualified guess on my part though is that such a large heatsink isn't really needed - I just used what I had.

The material for the clamps is indeed some kind of epoxy/fiberglass, just like FR4 circuitboard material but a lot thicker. I guess bakelite/hylam, delrin, plexiglass or some other kind of fairly hard plastic should do it. You COULD make them in aluminum but then they need to be a bit thinner or the clearance may be on the low side....

And the alu-plate backplate, well...that's just a 4mm alu-plate.

HTH
/Henrik.

**contactirfu** · 07-17-2008, 02:21 AM

since i don't have a milling machine at hand, decided to use super glue and 3 mm thk hylam to use for the clamps with nuts embedded in between.

started of with my hacksaw and bench drill!

looks very crude but should work. will post you the clamp affixed pictures soon.

pictures are from a crappy Motorola E6 rockr ... kindly excuse!