Wargaming Spraystick - Priming Tool
Note: There is a new modular version of this model, check my designs :)
Simple tool for making priming your miniatures quick and easy. Just add a few rubberbands :)
You need to print the transferwheel 3x and the spraywheels a sum of 7 times (I recommend using the "high" version 3 times: one for each end and one for the center as this allows you to add large models easier. Use the "low" version for the rest ).
I used the Camera Handle Pistol Grip by blu06 with some adjustments for this.