Another 273 commando build .. This one will be a "BEAST"

Subscribed - hope you post what worked for you when you get it freed - inquiring minds want to know. I've read/seen a lot of the methods people have posted in this thread. One thing I recently saw on Uncle Tony's Garage (whitepunkonnitro on fabo) was filling the cylinder with white vinegar and letting it sit for a few days. He talks about this in bottle rocket #10 at around the 4:40 mark, and then again in bottle rocket 11 where they manage to get it out.
Anyway, best of luck and I'm looking forward to watching this thread.