|View single post by tusharpc|
|Posted: Sat Feb 13th, 2021 10:17 pm||
The body is mostly 0.01” (0.254 mm) sheet brass from K&S Metals,
that was etched using a unique masking technique.
A few small high detail parts were produced using a resin 3D printer,
called Elegoo Mars Pro 2, that I’ve recently acquired.
I scoured through several online documents and maintenance manuals,
to define dimensions in HO scale (1:87)
I’m well aware of the HO track gauge and IR prototype broad gauge discrepancy.
But in the interest of compatibility I choose to ignore the track gauge discrepancy,
and focus on the model overall.
Once a few sketches were done, the plans were designed in 2D in Auto-CAD.
Most body shapes were flattened to their 2D forms, and then drafted.
eg. the tank rolls out to a flat rectangle.
Small detailed parts like, leaf springs, bearings for the axles and tanker caps,
were also designed and drafted in 3D in Auto-CAD.