Applying liquid solder to the underside of printed circuit boards in order to bond the chips and discrete components that are placed on top of the board and whose metal leads (pins) extend through ...

Now Pi boards have their tiny bits and bigger pieces soldered at the same time through an intrusive reflow soldering process ...

What do you do if you have to solder thousands of through-hole parts? The expensive, professional way of doing this is running the boards through a wave soldering machine, or a machine with a ...