Quarrymoor Heavy-Haul Loco Scale Model

A detailed 3D-printable model of a 2000s heavy-haul AC diesel freight locomotive featuring a wide safety cab and long engine hood. Inspired by real-world quarry operations, this slim, tall design stands upright on separate three-axle bogies with clean, unlettered PBR surfaces. Use supports for the undercarriage and radiator block to ensure a clean print.
Size as supplied: 100.0 x 21.0 x 27.9 mm (L x W x H), about 1:226 scale.
Print settings: PLA, 0.12-0.16 mm layers, 0.4 mm nozzle (0.2-0.25 mm for extra-fine detail), 3 walls, 15% infill, 3-5 mm brim.
Supports: needed for undersides and overhangs. Use tree/organic supports touching the build plate only; enable 'support on build plate only' to keep detail faces clean. Support Z distance 0.2 mm and interface layers make removal easy.
Pre-oriented: the 3MF is already placed upright on the build plate (z = 0) - print it as supplied, no rotation needed.

Rescale table (always scale uniformly):
- As supplied: about 1:226 (real object about 22.6 m on its longest side).
- HO 1:87: scale uniformly to 260% (longest side 260 mm).
- OO 1:76.2: scale uniformly to 297% (longest side 297 mm).
- N 1:160: scale uniformly to 141% (longest side 141 mm).
- TT 1:120: scale uniformly to 188% (longest side 188 mm).
- O 1:48: scale uniformly to 471% (longest side 471 mm).

Included files: the 3MF model, a print guide PDF (settings, supports, bed placement, colours, painting, reference views), a dimensions and scaling sheet, orientation and support tips, a real-world inspiration note and a README.

Images: all pictures are digital renders of the 3D model, not photos of a printed copy.