you can run a 16mm drill bit through a stem with little issue, you could drill it out in increments and soak it.
I wouldn't usually use caustic soda or lots of heat as it ruins the paint but thats irrelevant here. I would 100% melt it out with caustic soda or oxy acetylene if you have access to it. manually removing it is haaaaaaard
you can run a 16mm drill bit through a stem with little issue, you could drill it out in increments and soak it.
I wouldn't usually use caustic soda or lots of heat as it ruins the paint but thats irrelevant here. I would 100% melt it out with caustic soda or oxy acetylene if you have access to it. manually removing it is haaaaaaard