1910s Parade Petrol Omnibus 3D Print Model

This detailed scale model captures the boxy, open-top design of an early 20th-century petrol omnibus with solid tyres. Inspired by 1910s parade vehicles, it features a clean side profile and separate steerable front wheels. Print at 100mm length with supports enabled to ensure structural integrity of the upper deck.
Size as supplied: 100.0 x 36.1 x 51.1 mm (L x W x H), about 1:72 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 1:72 (real object about 7.2 m on its longest side).
- HO 1:87: scale uniformly to 83% (longest side 83 mm).
- OO 1:76.2: scale uniformly to 94% (longest side 94 mm).
- N 1:160: scale uniformly to 45% (longest side 45 mm).
- TT 1:120: scale uniformly to 60% (longest side 60 mm).
- O 1:48: scale uniformly to 150% (longest side 150 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.