- 3D-printed holder for scintillator plate (100 x 28.9 x 1.05 mm) 
- three different thicknesses for the distance piece to account for slight variations in the scintillator plate thickness
- design with and without alignment nubs at the bottom (for the detectors built in 2026 we used the design with alignment nubs)
- see picture for assembly details
- design used in 2026 to built two detector prototypes for the NEEC experiment