There’s even a product specifically for this purpose: XTC-3D by Smooth-on. However, I happened to have access to the syrup-thick UV resin from an SLA printer and it occurred to me to see ...
Just like my first 3 weeks with an FDM 3D printer ... and found that translucent resin cures much faster than other coloured resins because of its easier UV light transmissions.
At this point, everyone knows that the print quality you’ll get from even an entry level UV resin printer far exceeds ... and other imperfections of the 3D print, cure it with a handheld UV ...