update: 9/17/17 added the linked files to this thing for download and another bolt+ nut for snugly fitting in the pivot point.
version 1.1 has the proper bearing size also has other optimizations so it can be printed with no support still a small amount of stringing but nothing a little exacto cant fix.
If it comes off the plate fused turn upside down and use a popsicle stick and hammer to get the carrage moving in the slots. shouldn't take much force.
The nut that fits:
The bolt i use
I have designed this using:
one 608 bearing is all you need
I haven't decided on my power plant yet dose not require much torque.
I have only seen one similar project, I wanted a fork truck like lift for an rc car that is fully printed, well as much as possible. this is my first attempt at modeling. will update as i go
i am printing on my tevo i3 clone with pla at 200C with a layer height of .3
I recommend oiling the slide and threaded rod with silicone oil "super lube"