Help! > Mistakes, muckups, and dangerous behaviour

help with silver solder

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cmitcham:
the flux in the picture is harris sta silv black. i will admit the solder is from ebay a couple years ago, so i don't remember which silver content. i did use it sucessfully with harris white flux when i got it, but that was stainless parts with very little mass. since the current parts are beefier, i guessed i would be heating longer so went with the black.

i did play with some scrap today, and found that the "crispy black mess" is simply the flux after the water is gone. i continue adding heat, and it melts back to a liquid, cleans the joint,and then solder starts to flow. excited with my breakthrough, i fluxed up my crankcase again for anothe try, but before the flux was ready, my propane tank died :(

thanks for the quick replies, i'll continue this thread after this week's vacation.

crueby:
Great! Sounds like you are back in business, once Murphy's Law  leaves your propane tank alone!

tghs:
replace propane rig with mapp...

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