Over the last couple weeks I’ve been experimenting with potential ways to apply a sealant of some sort to the inside of the Jinhao 10 (and presumably 20) around the part with the trap door (not the door itself).
I designed and 3D printed these, based on the nib unit, to poke/prod at the inside in various ways. So far nothing has worked to get coverage in the correct place, though.
At least now I have a variety of ways to open the trap door and inspect things, I guess?
The third from the left did manage to get a little silicone grease around the right place but not good/consistent coverage. I’m tempted to tack some swab style tip on there but I’m worried it might just smear grease down the spring inside.
Here’s a previous post where I first imaged the area I’m talking about: Inside the Jinhao 10, Majohn A1, and Majohn A2
If this approach doesn’t pan out I’ll probably have to resort to super long blunt tip syringe needles (~100mm) but I have no idea what gauge, so I may have to buy a few.
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