Train Turntable compatible with Lego Duplo (somewhat parametric)

thingiverse

I modified ericdb's turntable to fit my newphew's biggest engine, Spencer. It was designed to be a used for a circular engine storage facilty, not mid-track as it probably has an odd length and angles that are offset. Barely fits on the printbed of the i3 MK1 Original (20x20), had to reduce the distance of the skirt from object. I strongly suggest not printing this in PLA or other brittle filaments as they tend to break with sharp edges which pose a danger to children IMO. I used PETG but ABS, ASA and surely more also break less violently and leave less sharp break ends (and wouldn't deform if a child decided to put it on a radiator, though that might be a good lesson). I included the FreeCAD (should allow you to change the overall dimensions, but not trivially) and Blender (lets you change the number of tracks per third of the circle, somewhat easily if you're used to working with Blender) files.