I had a stuck bobbin case assembly. I used PB Blaster, heat and then unwaxed dental floss to literally floss between the stuck parts to loosen the gunk that was binding the parts. I went slowly and just kept at it over days to not harm the parts with heat or force.
Hi Frodo do you mind posting some pics of the above items and or links to purchase them? I'm working on my sharpening kit and I'm interested in checking these out.
Thanks
If you have a Tandy Leather Store near you, they frequently have an open table for people to come in and do work in their store. At my local Tandy that includes being able to use some of the tools and equipment, i.e. the splitter.