Parker Vacumatic Filler Unit Removal Tool
Description
I recently took up a moderately banged-up Parker Vacumatic with the intent to restore it--not the easiest task, for sure. The main trick is having the right tool to replace the diaphram, and the right tool costs a fair bit, especially since I was only planning on working with the one pen, not dozens. Inspired by an alternative tool meant for just a few uses, I modeled this c-ring. It's threaded to fit the filler unit's endcap threads, and acts as a cushion for a pair of pliers to keep those threads intact and the filler unit in its original shape as you unscrew the unit. By the end of my repair, my ring was starting to fall apart, but everything was lined up and the new diaphragm in. The picture shows the ring in its post-removal state; it ended up getting quite chewed up as I worked to get the endcap's reflective portions aligned with the body's. 3 walls and 50% infill worked well, but you may as well up this to 100%; it's not like it's going to take a long time to print ;0) Of course, use this at your own risk. I'm sure the more conservative pen repairers would frown upon this; if you want to be 100% sure your vac is going to be ok, invest in a 3-point vac wrench. Remember to go slow, keep the joint warm, and only apply enough torque to get things moving.
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