I tried the paste for SMD out of curiosity, and found it is no good. It will "melt" before reflow (the flux i think). The paste will flow all over the place, resulting in too little paste at the pad when finally reflowing. also the flux might be a problem later on. Real SMD paste will stay a paste all the way. ST
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[Homebrew_PCBs] plumbing paste not for SMD reflow
2005-11-22 by Stefan Trethan