Print the with supports!

Bad assembly instructions:

Materials required

• 2 nails of unknown size
• 2 pen springs of unknown size
• M3 screw of unknown length
• M3 nut
• stationary.stl
• pen_holder.stl
•  a pen
• 9g micro servo
• 2x 10mm M2 screws 
• 2x M2 nuts

This was designed to fit the Drawing Thing (https://github.com/hackclub/drawing-thing), but you can fork and modify to fit your needs. Here is the OnShape file.