cyberspyder
Enlightened
Regular 5-minute/24 hr epoxy will work right?
Thanks, Brendan
Thanks, Brendan
Potting a driver board
- Thread starter cyberspyder
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cyberspyder
Enlightened
Bump.
koala
Flashlight Enthusiast
Do you know epoxy shrink? I don't know how much long would they cure/shrink but it's no good if it shrinks when it's hard. Components on your board may be tear off their pads. I have no data on this just a thought. It may not actually happen because lights below does not have the problem.
Some lights I know that has epoxy potted in their circuit board are Arc AAA, Arc LS First run, ARC4+, CMG Infinities. Surefire does not pot their circuit boards with epoxy, they coat them with a layer of silicone pcb coating.
Some lights I know that has epoxy potted in their circuit board are Arc AAA, Arc LS First run, ARC4+, CMG Infinities. Surefire does not pot their circuit boards with epoxy, they coat them with a layer of silicone pcb coating.
cyberspyder
Enlightened
Hmmmm, what are the alternatives to epoxy? I chose it because it was cheap...
koala
Flashlight Enthusiast
Try "pcb lacquer" cheap too but big can, last forever 
.
I just did a search on "circuit board potted with epoxy" they are there but you gotta find the right "epoxy mix" for potting circuit boards. Btw, your circuit board is probably the standard FR4 which is basically fireproof epoxy resin fiberglass!
.I just did a search on "circuit board potted with epoxy" they are there but you gotta find the right "epoxy mix" for potting circuit boards. Btw, your circuit board is probably the standard FR4 which is basically fireproof epoxy resin fiberglass!
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macforsale
Enlightened
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cyberspyder
Enlightened
What about this? Picked it up at Home Depot today...claims it does not shrink or expand.
Brendan
Brendan
greenLED
Flashaholic
I do have first-hand experience with epoxy shearing off components off ArcAAA boards. Since that I switched to RVT silicone for potting.
There's a difference between epoxy and the black potting compound used in some lights.
Mr Happy
Flashlight Enthusiast
That kind of epoxy is a glue that sets rock hard. I'm not sure it's the best choice for potting things. Personally I'd look for something more specifically designed for circuit encapsulation.
jzmtl
Flashlight Enthusiast
The big caulking tube you buy in home depot for sealing stuff? Or the Permatex ultra black/copper type?
koala
Flashlight Enthusiast
Silicone sealant is quite nice, inert and flexible soft. Can also be removed with elbow grease if required.
if required.
greenLED
Flashaholic
I've only used the smaller clear RTV silicone tubes.
Sounds like Vince has had to clean RTV silicone before... it takes a while, but it can be done easier than struggling with cured epoxy (IMO).
cyberspyder
Enlightened
So not silicone caulking, but rather sealant? Thanks!
