The video above is of the first prototype: a tad rough, mainly because a wood grain pattern I etched into the floor caused a warp in the thin acrylic. The pattern is fine in a thicker material, but I needed to downsize. . . I used this model to determine the minimum tolerances, and to experiment with clearances. The brass was all scavenged from the scrap bin.
|Mess of servos. . . small, smaller, smallest!|
|Boxcar variant (straight drop), with decoder in background)|
|The straight drop version, cheap servo and a slider without play--very precise.|
|Here is the first prototype, with the previous, non-servo version of the frame.|
|The new cut file, arranged to avoid warping!|
|The first two. . . cut just before the sheep busted out and I had to go fix a fence.|
|The detail parts arrived fast, thanks to the good service of Valley Model Trains.|