4 ms·
Just an FYI here: heating epoxy (sufficiently) will overcure it and make it removable (it'll puff up like popcorn, and becomes very brittle and weak). I can't s
by stan_rogers 14y ago
Just an FYI here: heating epoxy (sufficiently) will overcure it and make it removable (it'll puff up like popcorn, and becomes very brittle and weak). I can't swear to the current state of the art, but using epoxy as a conformal coating to exclude environmental influences and thermally stabilize a populated circuit board was pretty standard military/aerospace practice in my day, and one could use standard soldering tools to drill down to the components for replacement/repair.
- niels_olson 14y agoYeah, I really enjoyed being the electrical officer on a ship, deployed to nowhere, the frequency converter broke, we opened it, and the affected board was covered in charred goo. CASREP 98032 SUBJ: REQUEST $30K BOARD TO REPLACE 30CENT CAPACITOR. Yes, Captain, the cost of a day's fuel for a 30 cent capacitor. And we will spend $80,000 to air drop that board in a $5000 box from a $50M airplane into the ocean and recover it in a RHIB at non-zero risk to human life. For a 30 cent capacitor. Thank Raytheon.