It starts with a stencil laying solder paste like ghee on a dosa, then the pick-and-place machine sets components with a tired precision. The oven is the real cook—it melts the paste into a permanent connection, a slow, invisible fixing. I know from watching a thousand boards pass through that the oven's profile is everything; too eager a heat and you get voids, like promises made too quickly. It is not so different from repairing an old compressor: the right heat, applied with patience, is what makes a joint that lasts.
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