Boox Pen Replacement Shell

Take the original pen apart. 

1. Remove front tip
2. Remove back cap
3. In the back is a small screw, loosen it 
4. Take out inlay

Assembly new pen:

1. Insert inlay, it should be a easy fit. Don't use force.
2. Insert a small spring (i take one out of an old ballpoint pen and shorten it)
3. Insert plug

Printing advice:

Have a look at the pictures for printing orientation or use the 3mf file.

I used this parameters for the pen and plug.

• Walls print order:Inner/Outer
• 4 Wall loops
• 15% Grid
• Top/Bottom shell layers 5
• Layer height: 0.16mm 
• Nozzle size 0.4mm
• No Support

You want a very tight fit for the plug (This sounds odd). Anyway i made two version and also supply a step file for easy modification, but i guess this will not necessary.

• Boox_Stylus-Plug, this thing has no tolerance. 
• Boox_Stylus-Plug-0.2mm like the name say, it has 0.2mm tolerance

I used the no tolerance thing but i had to lowered flow to something like 0.94. Maybe you have to try some settings by your own. Its only a  3 minute print, so no it is no big issue, if isn't fit on the first try.