Solder paste and flux dispenser

The syringe adapter can be bought ready and a little undercut.

For example here: https://goo.gl/eTdF2C Or print my model.

I used the clamp 4inch, like this: https://goo.gl/HtFMjx

Nuts for injection moulding: https://goo.gl/nUDLCJ

NOGA deburring tool: https://goo.gl/iGfJ9R

NOGA NB1100 Deburring Tool: https://goo.gl/xt7Sfe

The rest - see the photo. 

More information on the Russian forum, here: https://radiokot.ru/forum/viewtopic.php?p=3426814#p3426814