Base Plate for STEM Kit, 90x75mm
thingiverse
This is an additional / replacement base plate for the STEM kit below, from Amazon. Oddly, the kit comes with several sets of motors, axles, etc., but only two of the base plates needed to build something. So let's fix that! If your printer supports "ironing", or some other smoothing function for top surfaces, I recommend using it. If you open the SolidWorks file, you may notice the hole spacing is odd. The holes are actually 5mm apart (in a grid, ignoring the 5th hole in the middle of each square of four), but SolidWorks calculates it weird because it's spacing them along the 45-degree line. This is the kit that I have: AOMAG DC Motors Kit for Kids, 6 Set 159pcs Mini Electric Hobby Motor Strong Magnetic with Plastic Gears, Shaft Propeller, Plastic Wheels for DIY STEM Engineering Toy Science Project https://smile.amazon.com/AOMAG-Electric-Magnetic-Propeller-Engineering/dp/B093SRLK3G/ It looks like these same plastic "bottom plates" are used in many other Chinese STEM kits on Amazon: - Solar kit: https://smile.amazon.com/Experiment-Electronic-Educational-Engineering-Experiments/dp/B08MWPVNDC/ - Robot kit: https://smile.amazon.com/Assembly-Projects-Electronic-Building-Experiments/dp/B08DLYY49X/
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