Parker Retractable Ink Refill Cartridge

grabcad

For a pen I'm working on, I needed an accurate model of the cartridge. I couldn't find any that were halfway decent, so I measured carefully as I could a real one and modeled it up. I figured I may as well put it on here for any other pen designers. Based on the 30525PP Parker Quink Medium Retractable Gel Refill but should be identical to other Parker cartridges of similar type. The geometry on the helical ramps on the tail cap are pretty accurate overall, but might not be 100% perfect along the ramp sweeps. I think for design intent it is sufficient, but if you intend to make a new pen, you should verify the geometry works for you before putting major money into it. Model is intended for preliminary design and prototyping.