Summary

dual 57mm bofors-like cannon mounted on a modified T-54 chassis.
capitalist swoopy jets better beware!

model in full dimensions in blender 2.80 and exported from blender 2.79b* at 1/100 for the .stl file
scale down to 35% in the slicer.

I've had issues exporting .stl's from 2.80 for Cura; 2.79b and 2.80 export the same mesh to different file sizes, too. So I export the mesh from 2.79b for consistency's sake.

as usual, the d6 is 15mm for reference