I haven't done any weathering as yet. This dozer was left over from the USA operation of the Railroad during WWII and would have been overhauled by the talented shops in Skagway. Interestingly CAT didn't make their own tools till the 50's, they just made tractors. I made a D6 with the overhead frame cable driven Le Tonneau setup, hydraulic units weren't so common early on. They have an advantage in being able to apply downforce and not just rely on the weight of the blade.
Perhaps I should print another D6 as well?