After 45 years of soldering experience, I'm toying with SMD and paste in an oven. Using 2 types of paste. My question is -- Generally does a paste joint have a "grayer" appearance than a hand soldered joint? (Less silverish?),
I'm seeing it reflow, go to a silver but it doesn't seem to have the shine of a hand soldered joint. The connection is good -- vom says so etc.
Perhaps it depends on silver content? my pastes are 63sn/37pb and another is low temp 42/57. But again, does paste have a lower "sheen" (generally?)