Functional Escalator Model - Redux

Update: I've finally gotten around to finishing up the motorized version of this design. Check it out here: https://makerworld.com/en/models/495262This is a complete rework of my functional escalator model from 2022. It is a ground-up redesign incorporating a bunch of significant changes, including the following:Chain links now sit directly against the escalator steps. This allows the entire chain and step assembly to be put together in 1 step and reduces the sliding friction experienced by the mechanism.An assembly jig is provided that holds the steps together when installing chain links, reducing assembly time and difficulty. No more partial disassembly to get the chain on both sides of the steps.Fine-tuned the sizing and geometry of the moving parts. The model incorporates larger and fewer steps resulting in a lower part count. Larger pins on the steps reduce friction and make the parts easier to print.Steps now have a realistic groove pattern.Variants of the parts are provided