Microsoft Surface pen cap
thingiverse
This pen cap protects the tip of the Microsoft Surface Pro 4 pen. I tried the Sharpie cap bit as suggested in [reddit](https://www.reddit.com/r/Surface/comments/5ho9jj/looking_for_a_pen_cap_for_surface_stylus/), but it was awkward, didn't fit well, and was too long, so it always extended past the edge. This fits nice and snugly to the pen and to the tablet, and I like the way the blockiness matches the pen itself. Note that the thingiview shows an insert that goes all the way to the bottom, rather than a ring, but I verified that the .stl file has a ring with meshmixer.
With this file you will be able to print Microsoft Surface pen cap with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Microsoft Surface pen cap.