A longer delay between assembly and operation will allow for more cure time.
Those long delivery times are worth something, after all.... :p
I just put together a nine amp MTG2 with cheap white silicone-based thermal paste between pill & copper Noctigon, and it didn't outgas anything. It's the same stuff I use on bare-die CPUs that put out way more heat in a smaller contact area and those don't do any outgassing of anything either. The 2-board driver for the MTG2 also has that 1/4" thick sticky silicone pad style junk sandwiched inbetween, and it gets hot enough for the overheat protection to kick in after about 5 minutes, no smoke or vapor from that silicone pad. Similar heat levels with JBWeld doesn't outgas anything even if fired up before the epoxy is fully set.
I still say this was nothing to do with the compounds used and that the fog came from the overheated LED itself.
I received some non-silicone thermal compound this weekend, and I’ll probably try to clean off the original thermal compound I had on their plus the thermal pad (silicone-based also), and then replace them with just the non-silicone thermal compound, and see how that goes with another long test. This would still be with the XP-G2 on a normal star (IS) though, as I’m still on-the-fence about needing a Noctigon XP-G2.
I have a new UCL/p lens coming in, someday :), but I’ll do this testing with the original lens, as I don’t want to mess that up.
Probably won’t be able to get to any of this, as we still have family in town all week this week.
Jim
I have two CPU fans to replace, and I think I have some unopened Arctic Silver compound. It could be fun to see if I can capture any outgassing. I have been putting off changing these fans. >.<