My Merlin!

 Mostly to 10mm scale.  Printed on an Elegoo Neptune 3 Pro, with PLA plus filament.  Two N-20 motors power the drivers, controlled from the tender by batteries and a small DC motor controller.  

Because of the large number of STLs , I've zipped them in groups.  However, there is one of the assembled models. for viewing with your slicer!

March 10, 2025, Please Change; best to use N-20 6v-600 rpm motors. Instead of 6V-300.

April, 2025, Updated.  Gear 10T changed bore size +.1mm and added an optional version to fit N-20 motor with 3mm shaft having a partial flat.  Located in 1-Motor Pan 1-9 updated 4-25.zip.