Author Topic: Cleaning boards, removing flux from PCB's  (Read 125 times)

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Offline NJ-Tom

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Cleaning boards, removing flux from PCB's
« on: April 20, 2020, 03:00:16 am »
I've been keeping sane during the COVID-19 isolation by working on a project, but I'm not sure how I will be able to clean boards. My current procedure:
  • Techspray E-Line Flux Remover, scrub with toothbrush.
  • Then rinse in a container filled with 91% isopropyl alcohol, scrub with toothbrush.
  • Then two rinses with distilled water.
There tends to be residue remaining after the flux remover that the alcohol does a reasonable job of cleaning off. (and it's fairly safe to use) Of course, it is impossible to get isopropyl alcohol anywhere, and I don't have much left so I don't want to waste it on cleaning boards.

Any suggestions on how to improve my procedure / deal with the lack of alcohol? Use a different flux remover? Just use more of it?

If it helps, here's what I'm cleaning up from:
  • Solder paste: MG Chemicals 4900P-250G SAC305, Lead Free No Clean Solder Paste
  • Solder wire: Kester 24-7068-1401, Lead Free Rosin Activated (RA) Wire Solder, Sn96.5Ag3Cu0.5
  • Desoldering braid: Soder-Wick 80-4-5, Rosin, Non Activated (R), Lead Free
I also have to figure out an alternate way to clean the remaining paste off the stencils.
« Last Edit: April 20, 2020, 03:19:00 am by NJ-Tom »

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