Flux and Solder Paste Dispenser - Torsion Spring Version

This remix have a few mm wider hinge so I was able to install torsion spring there.
Rubber band have some disadvantages, like less technological look or you have to replace it after some time.
You need 2 bolts for hinges: M3x20 and M3x25 and 2 M3x3mm brass inserts
You can use any torsion spring, but not some strong one so it shouldn't push flux by itself, internal diameter should be 3.5mm or more, max width 6.5mm

I used the one with 0.7mm wire, 60 degrees, 4.2mm width (6 laps ), 5mm outer diameter image from aliexpress.

Can be printed with anything, I had some unused PA6 nylon so I printed with it to make it stronger
Get piston and smaller lever from the original model