Quote:
Originally posted by Kevin
I would think Epoxy would work just as well except when it came to temperature cycling. Originally, when I set up my Kyro II w/ a peltier ( http://www.procooling.com/articles/h..._ii_mods.shtml ), I used only epoxy to hold everything together. It seemed rock hard at first. After a few days though, the heatsink fell off. THis was due to temperature cycling weakening the epoxy. I used JB Weld to fix it up then, but pure epoxy was not sufficient.
I like your O-ring idea. However, when people open that up and the close it, if the block leaks, they may blame you... even if it is their own fault for re-sealing it incorrectly. I really think solder is the best solution, but go with whatever you feel works.
I don't like the idea of using screws as backup to epoxy. Because it isn't an "IF" as far as epoxy failing. If sufficient temperaturce cycling exists, it WILL fail. so then there are just screws which hold the thing down. That doesn't seem good. But ya know the epoxy should work just fine when not used in peltier situations. You may want to advertise the blocks as NOT FOR USE WITH PELTIERS and then you're probably fine. ah... too much writing...
-Kev
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Good input. This epoxy is especially designed for metals. I put some on a scrap peice of Aluminum and copper and just let it dry on it without pressure applied and it will not come off of there. I chipped and hammered at it and it would not come off. I can only imagine the extra pressure I applied with the clamps that ot would hold that much stronger.
If I came up with an O ring block I would have to make a disclaimer for sure that if you took it apart you are liable from there on out and be advised to replace the O ring. I had a Toyota truck and my little Honda car both use rubber O rings on for the Thermostat seal. Nothing more nothing less and they work!!
I am going to have to learn how to solder well anyway so I will probably just solder them. I can't figure out how that extreamly tiny amount of solder holds the block together? There is just a tiny layer left after you mill the extra off. I think I will have to file the edged down a bit to get more of a full pen weld type pass on there. I have used all kinds of epoxy over the years and actually feel safer with it on my blocks than that tiny bit of solder. But i will give it a try.