Building a Steam-Powered Doodlebug

I have been and still am fascinated by combine-style doodlebugs. While I prefer steam, I will talk about my entry into scratch building one, after having kit-bashed the machine I will be talking about principally. I will focus on tips for construction, making one’s own parts, and how to use existing hardware to make a one-of-a-kind model. While I model narrow gauge (HOn3) the techniques are applicable to any scale. Styrene is my current material of choice along with molded resin. I have also been casting my own pieces. Warning: casting in resin is addictive!