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--- decap:epoxy_acid [2025/01/04 17:18] – Adding Drain Pipe Opener, adjusted H2SO4 hierarchy yukidama
+++ decap:epoxy_acid [2025/02/03 06:42] (current) – [Rosin] mcmaster
@@ Line 413: / Line 413: @@
 ===== Drain Pipe Opener =====
-Some strong drain pipe openers are essentially Piranha solutions. Based on my experiments, this solution has worked great for most epoxy packages. This solution is very easy to obtain in many countries and regions without any regulation, making it a good alternative to hydrosulfuric acid.
+Some strong drain pipe openers are essentially Piranha solutions. Based on my experiments, this solution has worked great for most epoxy packages. It is also very easy to obtain in many countries and regions without any regulation, making it a good alternative to sulfuric acid.
-That said, it's just as dangerous as concentrated hydrosulfuric acid, so it should be treated with extreme caution and protection of PPEs.
+That said, it's just as dangerous as concentrated sulfuric acid, so it should be treated with extreme caution and protection of PPEs.
 The only downside is that it eats away metal and bonding wires.
@@ Line 439: / Line 439: @@
 ====== Rosin ======
+https://ic.onidev.fr/en/die/rosin_decap.html
 Boil a chip for a few hours in rosin, like used for soldering. Refluxing equipment is ideal. Should eat away the casing. Might be best used with Dremeling or other techniques to remove the majority of the epoxy first. The active ingredient for this is abietic acid.