This is a remix of the cool Thingiverse project of mordaha that I optimized for my requirements in the following terms:

used 2x M3 screws as lever axles instead of 1x M3 screw and 1x filament
levers have a bit more space to each other to move more easily
added grip area for more precise dispensing
added channels on big lever and main part for a rubber band or o-ring
added fixture for an optional spring between small and big lever (outer diameter: 10mm / inner diameter 8mm), model works also quite well without the spring
added two big lever versions with FLUX and PASTE marking beside a neutral one

Printing parameters

layer height is not critical, I used 0,3mm
for the piston I recommend at least 10mm brim and 3 outer perimeters to prevent stability issues
no supports needed
best printed in PLA

For the complete dispenser you need to print 4 parts:

Examples for sourcing the consumable materials

Credits

Original model is copyright 2020 by mordaha

craft