I have recently got into vintage pens and bought a few Esterbrooks (which i love now btw) on ebay and resacced and repaired them and a waterman crusader, and I really loved the look of the Sheaffer triumph type nibs so I bought a desk pen vac fill version for a good price.
The filling mech doesn't work anymore as the rubber washer inside has fallen apart so I need to get the nib off so I can replace it. Well I've tried everything to get the nib off and I'm at the point that I'm afraid if I try anything more drastic I will break it. So I figured I would ask the pros on here what tricks they might have that maybe I haven't tried yet.
I've soaked the pen in ammonia for 3 days already and ran it in my ultrasonic cleaner off and on in ammonia a bunch in those 3 days as well to try and help get it into the pen to loosen it up. After soaking I used my heat gun to heat the section up to even hotter than I would have liked which was hot enough to have a hard time holding it with bare fingers. The I really tried cranking on the nib with just my finger power to try and rotate it to break it loose but no luck..
I'm afraid to use any mechanical means to put more force on it and end up snapping the feed or something. Does anyone have and suggestions of what else I can try? If I can't figure anything else out I'm just going to have to really get it hot and use some padded pliers or something to crank on the nib and pray nothing breaks.
Also please don't suggest I send the pen to someone for repair, I don't believe in paying someone to do something that I could learn how to do myself given I try hard enough. I like to learn as much as I can and try to be as self-sufficient as I can, and I recognize that there are people out there that know MUCH more than me but I'm hoping they could give some input to help me out so I can try to do it myself instead of paying someone else and me learning nothing.