3D Printer parts for HOn3 shay - regauge to HO

I picked up a Roundhouse/MDC HOn3 Shay about ten years ago. I never really got into HOn3, but recently picked up some dirt cheap On30 locomotives and cars. I thought I could re-gauge the shay, make a bigger boiler and cab and have a nice quirky slightly off scale shay as well.



3d printed adapter bracket

fits perfectly - had to drill the holes out with a 5/64" bit for the side frames

will have to do something about the coupler pockets










Runs - poorly - but it runs.... no where to go but up.