This model is adapted from “Microbot High Detail” by BlenderUnknown on Blend Swap. The original is posted with the “CC-BY-SA” license. It is tagged as Fan Art on Blend Swap (i.e. NO commercial use), so I added the NC to the license.

I wanted to print (an army of) small Microbots just for fun, but I couldn't find any Microbot file that I liked. Most of them were either plain (less detailed), or they were models of the Megabot (the doll-sized fighting robot) with gaps for magnets. The Megabot models were nice for another project, but I didn't need something so complex now, so I found the Microbot High Detail model by BlenderUnknown. I also found someone on Etsy selling one Microbot (probably more solid, but looks less detailed) for about 1 USD each! I can't afford that!

I rescaled the model to 30 mm in length (6 x 6 x 30 mm), following approximate calculations by user Altruistic-Copy2968 on Reddit. I also added a negative cylinder at the base of the model to minimise the risk as a choking hazard. The model is printed in vase mode, which also leaves an empty space on the top, so the entire model is hollow. Initially I tried with brim, which I then peeled off, and filled in the remaining whitened plastic with permanent marker. I next tried without brim, and it still worked.

You can delete the negative cylinder, remove vase mode, and rescale it if you want a larger one. (Or just use the blender / stl file)

I tried printing multiple pieces on the same plate in regular (non-vase) mode. There was bad stringing (likely due to my filament moisture), and the z-seams made the print ugly. I used randomized z-seam as I felt that aligned would stand out too much, but randomized z-seam just felt too prickly for a model this size. I accidentally broke one of the Microbots from that test as I was trying to scrape off the z-seam and the stringing.