new custom coupler. great!

https://preview.redd.it/z05rjlbuqhwg1.png?width=1004&format=png&auto=webp&s=bc76abac5703acc80bd1a8eba1eaefd3b7d7854d I recently discovered this product on Reddit. I ordered it and received it today. Out of the few options, I ordered the most basic 1-hole coupler and the 2-hole version. I haven't been able to install it myself yet because my train isn't finished in physical form, but I tested it out and it works great. Although it is 3D printed, it seems to use the VP method. The surface is...