View single post by tusharpc
 Posted: Sat Feb 13th, 2021 10:17 pm
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Joined: Thu Oct 6th, 2011
Posts: 26
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.

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