Great model! My wife had been wanting a Christmas train for a while and as big as possible. Printed on our A1mini (no AMS) at 112% with Esun PLA+ (Fire Engine Red, Black and Gold) Because i scaled up the design my tolerances would have altered and some pieces were slightly out of groove, but you adapt with the situation and it still came together nicely. The main body rings were a little hard to align squarely and with a super glue which set fast, misalignment was an issue, a couple subtle grooves might be helpful here for glue control and alignment. My wife wanted a carriage to go with the train. I designed a carriage to suit the scaled up 112% model. Now she wants another printed and a coal carriage to go with as well. Thanks for the model and some creative beginnings.