..which include crevices, normal plumbing flux and although I've experienced luck with most solders, four% silver bearing solder is more robust in the long run...kinda high priced tho... I had Harris solder readily available at enough time so no major offer for me but high-priced if you don't have to https://automotive-repair-shop00015.jiliblog.com/84767043/5-easy-facts-about-types-of-solder-to-use-on-aluminum-radiator-described