I recently purchased a handful of Red Caboose centerbeam flatcars and wanted to add some scale lumber loads. After doing some research online and checking out what was available in the retail market, I decided to try to make my own. After several evenings of prototype photo study and observation, I put my ideas into action and created a prototype. From there I went through a couple iterations of enhancements and landed on the lumber loads shown in the photos below. I think they turned out quite well.
So far I have created lumber loads with the brand of West Fraser, Canfor, and Interfor Pacific. I have more templates created and will be sharing the results very soon.