What epoxy for homemade water block?

[Monaco]

I'm turning a small heatsink from an old MediaGX into a waterblock for my Video card. Unless it works really well, then it's a CPU block:D

I'm basically enclosing the 'sink in plexi, so I need to the epoxy to bond Aluminum to plastic and plastic to plastic.

I'd rather not use J-B Weld. It normally kicks butt, but it is not really very adhesive in this situation. My first try on this used it, but fell apart when I handled it.

This block will be on a heavy-use machine, so it has to be as perfect as I can get it. Any body have any ideas?

[outhouse]

If JB weld wont hold it then i would not chance it to any glue, one mistake and its all gone.

[Colin]

If JB Weld did not hold, the surfaces were not prepped. Clean them with a good solvent like Goof Off first. JB Weld is just epoxy with steal particles in it. Any good water proof epoxy should work. Generally all epoxies except for the 5 minute versions are water proof.

[Monaco]

Hmmm maybe I'm not using the J-B right. I made sure the surfaces were clean and roughened, but no Goof-Off or washing or anything. Where do I score some Goof-Off or something, Colin?

Last time I tried it I could scrape the J-B off the plexi, at least where it was in thin tendrils. It hadn't marked the plexi at all.

I hope I'm just doing it wrong cuz like outhouse said I'm screwed if it doesn't work.

Thanks for the advice

[Colin]

Target, Wall Mart or any hardware store. You may want to test Goof Off on the plex first. Some plastics don't get along with it.

[Monaco]

Hey, thanks very much. I'll get some tomorrow.

I'm actually taking pictures of this little project, If I ever finish I might just post a little How-I-Did It article.

-the monster