Hi Axel,
Yes, a hill of solder is not necessary on a thru-hole solder joint. But your recommendation to just fill the hole is not sufficient. How do you know if there is wetting between the solder and the pin in the hole? The characteristic of a good quality thru-hole solder joint is that you can see a concave shaped minimum amount of solder wetting both, the PCB solder pad and the pin protruding the hole, on both sides of the PCB.
See also?
73 Jakob
