Well, other than using perfboard at all. I really should learn CAD and have a few nice boards made. This last one had about 300 wired connections on it.
I solder with MG Sn63 / Pb37 No Clean. Then I scrub the back of the board with MG Isopropyl alcohol and a toothbrush and soak it with MG Flux Remover Spray, normal strength, not heavy duty. I soak it good and let it stream off, front and back (cleaning moves some of the dissolved flux to the front). But when it dries, the board is very sticky. I thought this was supposed to remove the dissolved flux. So I do it again, after the second dry the board is less sticky but not good enough IMHO. After the third time around it's good enough. Am I doing anything wrong? Should I be just using the MG Flux remover and forget the alcohol? The alcohol is less expensive, the spray is pricey. I don't want to use the heavy duty because I have 14 segment displays soldered to the board. Thanks.