Exporting cuboids to .STL format.

Questions
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1

I have some code which takes a number of points generated by an iterated function and plots a cuboid. Is there a way to have these cuboids exported in an .stl file fit to 3D print? Here is the line which creates the cuboids.

Graphics3D[
 Map[ {Hue[.5], EdgeForm[Thickness[0]], Opacity[.75], 
    Cuboid[(#), (# + {ht, ht, ht})]} &, test ], Axes -> True]

Many thanks!

2

You can use Printout3D or Export to make the STL file from your graphics. I have never used Printout3D so can’t say anything other than read its documentation. If you use Export, there is probably less checking on whether the object is printable, but you will be able to visualize it, as below.

ht = .5;
test = Table[{RandomReal[], RandomReal[], RandomReal[]}, {1000}];
Export["boxes.stl", 
  Graphics3D[Map[{ Cuboid[(#), (# + {ht, ht, ht})]} &, test]]] ;
Import["boxes.stl"]

boxes.png
boxes.png714×758 8.15 KB

Notice I removed the options you used, that would not print.
[1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=boxes.png&userId=28758