Attaching the .stl files for the trestles here while I work on getting them added to the 3D repository. Everything was printed with 0.3mm layer thickness and 20% infill using PLA. The lowest two trestles (1/4" and 1/2") are a single piece because I chose 1/2" for the height of the base. The rest are multi-part consisting of 1x base, 3x pole/pylon, and 1x top. I printed the base, top, and all-in-one pieces in grey and the poles/pylons in brown. I glued mine together with gorilla super glue and they are quite sturdy, even when they're not screwed to the table. They're rock solid when running my die-cast semi-scale Big Boy over them!
- base_v4.stl: base for the multi-part trestles
- top_v4.stl: top for the multi-part trestles
- pole_v2.stl: pole/pylon for the multi-part trestles (3x needed for each trestle) - height is 1" but scale in the y dimension in slicing software and copy/pasted as necessary to generate all the necessary pole/pylon heights
- short_0.25.stl: 1/4" all-in-one trestle
- short_0.5.stl: 1/2" all-in-one trestle
I printed mine with 1/4" height steps and spaced them 5-6" apart with 7-8" spacing for the first and last to create easements into and out of the grade. There isn't a built-in spacer like the Fastrack trestles have but the length of the base is 5", so it works great as a spacer if you decide to go with that 
I'm willing to generate .stl files for other heights of the all-in-one trestles if anyone needs them. Thanks to everyone for all your kind comments! I hope this can be a useful tool for whoever uses it!
