This is a simplistic recreation of the EMD-F miniature locomotive manufactured by the Miniature Train Company.

This was designed for my Mountain Park model: http://www.karenandjay.com/mtpark/mpmodel/mpmodel.html

Creality

Ender 3

Yes

Yes

.1 mm

20%

At the tiny scale I was working, I didn't need supports. But for larger prints, you might need them.