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

used 2x M3x20 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:

main part
one of the big levers (choose fitting to your needs)
small lever
piston

I added a syringe needle cap, to easily close and open broached syringes without the need to disassemble the needle. The cap also is a remix, the original was too short for my needles.

Examples for sourcing the consumable materials

Flux: Ali Express, Amazon
Solder Paste no clean: Ali Express, Amazon

Credits

Flux and Solder Paste Dispenser

by Elektroarzt · original on Printables ↗

Hobby & Makers / Tools

♥ 3.1k⬇ 7.6k🖨 128 prints

License: BSD Licensetoolsolderingelectronicslabrepairlaboratorysoldersyringedispenserworkbenchreworkpasteergonomicsmdfluxhotairbasicsolderingtoolsyringepumpreflow10ccsyringeholdersolderpaste

Print profiles

Big Lever Blank.stlDEFAULT
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Prints on: A1 mini 0.4PLA
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Small Lever.stl
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Piston.stl
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Prints on: A1 mini 0.4PLA
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Main.stl
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Big Lever Flux.stl
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Big Lever Paste.stl
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Prints on: A1 mini 0.4PLA
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Needle Cap.stl
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Prints on: A1 mini 0.4PLA
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