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Lemmy
Joined: Apr 12, 2007 Posts: 106 Location: London
Audio files: 1
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Posted: Sun Dec 30, 2007 11:47 am Post subject:
Vicious looking epoxy - should I use it? |
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Hi,
I made a custom arrangement for my soundlab with little bits of stripboard, to house my SM tempco resistors and the transistors they're supposed to be thermally linked to.
I bought some epoxy ages ago to pot them together but now I'm looking at it and getting a bit worried.
The warnings on it include:
Toxic
Dangerous for the environment
May cause sensitisation by skin contact
May cause cancer
Harmful: possible risk of irreversible effects through inhalation, in contact with skin and if swallowed.
Etc...
Restricted to professional users.
It's Electrolube TBS code ETBS20S
So I'm thinking about leaving it in its little box. I have some heatsink compound - maybe I should just put a big blob of that over everything? I don't suppose it will last so long as epoxy.
Do you think I should use this toxic stuff? I could do it outside, with gloves and goggles on I suppose.... |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Sun Dec 30, 2007 12:46 pm Post subject:
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I dont know what you have bought - is it for electronics? but the stuff I usually use is epoxy resin branded araldite. It commonly found in your local hardware/diy store real cheap ( £4 ? ) Doesnt smell much - goes rock hard in about an hour. That industrial resin stuff is terrible - I know people who use strong resin for casting, it can make you puke if you take too much vapour.
I put heatsink compound between the resistor and the matched pair and resin over the top. I dont think it has to be an amazingly thermal contact, especialy as you are making contact through the ceramic case of the IC. _________________ Clacktronics.co.uk |
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Lemmy
Joined: Apr 12, 2007 Posts: 106 Location: London
Audio files: 1
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Posted: Sun Dec 30, 2007 1:43 pm Post subject:
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Araldite with heatsink compound seems like a good idea.
The stuff I've got is for electronics, it's officially a "Thermal Bonding System", so it's right for the job, just extremely toxic into the bargain. |
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hackbox
Joined: Jul 27, 2007 Posts: 134 Location: Australia
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Posted: Mon Dec 31, 2007 10:41 pm Post subject:
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Hot glue works rather well.
Keeps the the temp constant and more resistant to ambient temp changes. _________________ My DIY and Instrument addiction blog.
http://theawesomepowerofrockets.blogspot.com |
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