Let me get you back to speed, so this was a project that I started before, but only put a little care into, so now I will do what I started. I bought pen cartridges with my own money, so i can model and test easily, so I did, also before I modeled how I want the pen to look like. In this blog I modeled the pen cartridge, that I now have at home and I modeled the top cap for one of my ideas. There are two ideas on the right is the cartridge with a 3d printed top cap and on the left is the original cap that it came with, both of those will go into my pen, but I still don’t know which one, so I’ll need to decide later, for now that’s all.