Attaching Heatsinks to Hoods

Enigma · #1 09-08-2012, 01:35 AM

Can I use something like JB weld to attach an aluminum heatsink to a plastic hood?

I don't want to drill holes in the hood.

gregzz4 · #2 09-08-2012, 01:40 AM

Can you get us some pics of the sink, and where you'd like to attach it ?

I'd be a little concerned about it holding longterm as heat can separate adhesives

Enigma · #3 09-08-2012, 01:45 AM

I'm working on photos . . . Photobucket isn't cooperating.

Enigma · #4 09-08-2012, 01:50 AM

Not totally done yet . . .

The CF lighting and the reflector are coming out. The LEDs will be mounted under the acrylic slash guard.

Could I drill holes in the splash guard and attach the heatsink to that with screws? I'd need some sort of tubing to go between the splash guard and the heat sink for the screws to run though: to keep the heatsink at a set distance from the slash guard.

Hmmm. Guess I should have drilled holes in the heat sink before I glued any of the LEDs down.

Enigma · #5 09-08-2012, 01:53 AM

Crappy Tire has a "high heat" JB Weld.

http://www.canadiantire.ca/AST/brows....jsp?locale=en

Enigma · #6 09-08-2012, 01:54 AM

There's an automotive "Goop" too.

http://www.canadiantire.ca/AST/brows....jsp?locale=en

How hot can I expect the heatsink to get?

Snaz · #7 09-08-2012, 02:08 AM

I mounted my heatsink by building a bracket with one end screwed into an existing plastic stanchon and the other end over the heatsink. Two of these hold the HS in place without drilling.

Enigma · #8 09-08-2012, 02:23 AM

Quote:

Originally Posted by Snaz

I mounted my heatsink by building a bracket with one end screwed into an existing plastic stanchon and the other end over the heatsink. Two of these hold the HS in place without drilling.

No pics in your build read. I understand what you're explaining, though.

I'm actually leaning towards the automotive goop. I think it should be able to withstand the heat, and it is removable (though it is a chore to remove).'it is supposed to withstand temperatures of 150F.

gregzz4 · #9 09-08-2012, 02:29 AM

I've never built something like this, so Snaz is your better go-to for help

If it were me, I'd go with the removable brackets
Safer, and easy to remove for maintenance/repairs

I see 4 corners of your acrylic splash guard look like they have screws - or are they just some kind of pressed thingys ?
Could you remove the guard, drill the sink and mount it to those holes ?

If you were a bit closer I'd come look

lpsreefer · #10 09-08-2012, 02:34 AM

High heat job weld would work. I would suggest though if u can get four holes drilled into your heat sink to mount in to ur hood. That would do best.
I had a similar problem with my 29 biocube.
A 2 dollar drill bit with screws. its a lot easier to change then a permanent thing.
Just my two cents.
As I took my led out and fitted it to a different tank.