Drawing on Molten Metal @adafruit #ManufacturingMonday (video)
A video of dross being scraped off the top of the pool of molten tin that lies at the center of our KISS102 selective solder machine.
Normally covered by pumps, the central pot of molten tin in our selective soldering machine is open here for cleaning and maintenance. The tin alloy quickly forms an oxide layer when exposed to air, making it easy to scrawl impermanent messages on its surface.
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