Simple plaque stand/holder i made for my Star Wars props. Designed to house aluminum plaques measured at 1.5x3.5 inches. Not sure if they will fit the MR plaques but I have included the .123dx files incase anyone wants to adjust the size or make improvements. I put two screw holes on the supports for securing the plaque to a wooden surface if need be. Glue was used to attach the supports to the back of the holder.
Aluminum Plaques were custom cut and laser engraved by a seller on eBay. He makes them in different sizes and finishes.
Still experimenting with the settings in Cura, but I have had some pretty good results with 0% Infill.
Rotate the model with the front facing the bottom of the build plate for a flat smooth finish.