Whats the best potting compound?

[Lumencraft (Matt)]

Hi everyone,

I would like to have some potting compound. My question is which compound is the best thermal conductor? Where to get it would be a help too?

Thanks.

 

[kevinm]

Arctic alumina is great, but is expensive. For something like potting, I'd use JB Weld. It's what I use to attach stars to heat sinks for fixed lighting.

Kevin

 

[arek98]

I use 832TC manufactured by MG Chemicals purchased here (this is smallest container). It looks similar (may be the same) to what is used in Malkoff dropins. Is not very good thermal conductor but all potting compounds I saw are pretty much close and this one is relatively easy to get and use. It cures in 48 hours but it may be heat cured in little more than 1h (I did it in my oven on 175F - lowest tem I can set). It is pretty thick but still manages to get in smallest gaps and holes (sometimes not exactly where you want it :))

 

[russthetoolman]

I pot with MG Chemicals FRB flame retardant epoxy, encapsulating and potting compound Kit # 833FRB-375ml
www.mgchemical.com 800-201-8822

 

[ZuluWhiskeyFox]

Arctic alumina is great, but is expensive. For something like potting, I'd use JB Weld. It's what I use to attach stars to heat sinks for fixed lighting.

Kevin

I too use JB Weld for everything.