However, I happened to have access to the syrup-thick UV resin from an SLA printer and it occurred to me to see whether I could smooth a 3D print by brushing the resin on, then curing it.

So until the logistics of large-format resin printers gets worked out ... lines and other imperfections of the 3D print, cure it with a handheld UV flashlight, and then sand it smooth.

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