A pane of glass was cut to fit on top of the planter box, giving you a nice surface to place curing PCB’s on. All in all, it’s a pretty simple and inexpensive method to make your own UV ...

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.