I am working here and there at seeing how well I can use 3D printing to create the shell for O scale engines based on HO mechanisms. Sure .. this has been done countless times in the past .. in fact it is the basis of On30.

BB Section

BB Section? As good a name as any for now. It stands for 'Battery Box Section' - meaning above the frame and below the cab. 1mm Corner Radius Waking up this morning I was looking at photographs of GP-7 locomotives and having my first cup of coffee and realized that the radius used on the...

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SD-40-2 Mechanism

Narrow Gauge Road Engine - 6 axle - part 1 I was talking to my friend Andrew Gillette one day about the possibility of using my Prusa i3 MK3 3D printer to create modern style On30 Road Engines. This isn't anything new - On30 itself developed from using HO mechanisms with O scale shells to...

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Long and Short Hood

Restrictions There are what I titled above 'restrictions' on the design of the long and short hoods. Take a look at the long hood .. much of this will apply to the short hood. Overall we have the maximum and minimum width, length and height. These numbers are NOT pulled randomly out of where the...

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