This is a great idea
C-Beam based modular Resin Printer
Build in 'Resin Style Bots' published by Jim S, Aug 10, 2016.
The build is based on a 500mm C-Beam and the SeeMeCNC FlexVat. The C-Beam is both the linear motion and a structural element of the design. The frame that holds the 45 degree first surface mirror and the build vat can slide up and down the C-Beam to accommodate projectors with lenses at different elevations.