Colors your filament without printing any parts.

Here is my adapter for bowden printers!:

https://www.thingiverse.com/thing:4722221

Steps:
1>Drill 1.75mm hole in end of Sharpie casing
2>Remove Sharpie tip with needle nose pliers
3>Heat end of your filament with cigarette lighter about 20mm from end
4>pull the 20mm piece of filament away from heated section to create pointed tip
5>Cut stringed filament from pointed tip(make as smooth as possible)
6>Straighten about 15cm of filament after the pointed tip
7>Slowly insert pointed tip in to drilled out end of Sharpie
8>Filament may need to be rotated a few times to pass all the way through the Sharpie
9>Print Away!!!
10>I just use a piece of tape to cover the drilled hole when not in use.