you can do what used to be done for all through holes on two sided
boards, drill the hole oversize, insert a ferrule (copper or brass tube
with an outer lip on the top end), flare the small end of the ferrule
with a punch and solder the ferrule in; then insert the component leads
in the ferrule and solder.
norwood sisson
Mark Rages wrote:
That one has bitten me as well.
It's hard to drill out the hole and solder both sides with a radial cap.