I made this project 2 years ago but I didn’t put it on my site. Yesterday somebody asked for pictures so I decided to ad it as a project.
The base of my solder aid is an old cutting board, on which I attached an arm that is pulled down by a spring.
(There is another spring on the other side)
I put the smd component on the pcb underneath the screw. Then it stays in place during soldering. On top of the arm I’ve placed 2 leds for some extra light.
(Capacitor in the picture above is 0805 so 2.0 mm × 1.25 mm)