Wahl Hard Rubber Gregg Fountain Pen section Removal

[wingwiper]

looking for a little insight as to am i missing something trying to remove the section so i can install a new sac? i've done the usual heat, soak, etc. and no dice? is it screwed in, is the section in the barrel rubber, celluloid or metal (that has rusted?). it is a cool pen i have had forever. removed the original nib many years ago and shoved a waterman #2 music nib in that gave me joy for many years. would like to put the original nib back in, but cannot remember which one it was?

any help appreciated

[FredRydr]

The problem is the aluminum liner between the back end of the section and the barrel. I used Syd Saperstein’s penetrating solution (but I’ve since been told it’s the same as “Blaster” penetrant). give it time and heat.

[wingwiper]

The problem is the aluminum liner between the back end of the section and the barrel. I used Syd Saperstein’s penetrating solution (but I’ve since been told it’s the same as “Blaster” penetrant). give it time and heat.

i had heard there was some kind of metal in there? thanks for re-confirming and advice

[wingwiper]

[eckiethump]

Care has to be taken, not to overheat, bear in my metal swells on heating and the liner is metal.
Eric