The model is tested with several sizes of the Bessey EZS clamp. The clamping plates are the same size between the models and only the length of the clamp differs. They all fit in to this holder.

To put the clamp in open the clamp and slide the bottom plate in to the holder. Than close the clamp making sure not to over tighten it.

I've printed this with 0.2mm layer height and 20% infill on a Prusa i3 mk3 in PLA and in resin with Anycubic high speed resin on 0.1mm layer height. Both work just as well. Prints in 2,5 hours on the Prusa i3 and in 35 minutes on a Photon Mono M5S in resin.