They had a table at Strasburg. It looked like a mix of old stuff and newer kits and detail parts. They were giving away some 3d printed windows I think as samples. I’m a bit perplexed with their use of a PLA printer for their 3d printing, and think they should explore resin printers. The PLA print leaves a lot of layer lines that are hard to get rid of, especially in detail rich areas. They sell a 3d printed version of the waffle side boxcar that I believe Walters made in plastic. The price is around $165, which is similar or more than many of the real high quality one piece cast resin offerings out there. I haven’t seen any photos of a finished car, which probably would help sell them. They might be better off mastering the parts on a 3d resin printer, making molds, and then casting them in resin. I think PLA has a place in model railroading, and I use it, but for parts that aren’t visible, or minimally visible. I just used this method to make bolster centers for my spline log cars. You can print female threads down to 2mm with PLA. They’ve done the hard work designing the parts already.