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Good point, it is not an Icosahedron, but rather a dodecahedron, which was misidentified on the link as a regular Icosahedron. I didn't stop to inventory the faces, I figured the person who posted it would have! A ProSteel solid, if I am not mistaken. A dodecahedron has 12 faces. Some of the more advanced ones really make my brain hurt...fun to look at though!

This is the template I used.

An Icosahedron it is then. Happy to see that the opposing face numbers total 21, as they should. Well done, it looks pretty interesting in X-Ray Visual style too. Something that I really enjoy about CAD, is the ability to Model 3d Solids, or just draw 2D shapes which would be extremely difficult to create in an analog environment. I would hate to have to draw a 57 sided polygon on the board, for instance. I just watched, and was pretty entertained by the link from your earlier post. I commented on the video. If you will be doing this again for your friend, with different numbers of faces, you will likely get pretty good at this. A nice puzzle to solve. The Action Recorder functionality might come in handy.

There you go. Updated the dwg file, and changed my software version. The updated file is the finished version that I got to work. The numbers on the die faces are their own layer, and are recessed into the die itself when turned off. Turned out well, just took a bit of work since CAD won't allow you to explode text unless you're in the top view (see YouTube video above), which kind of made the UCS/face command useless for this particular project.

How about creating a copy of it, SAVED AS Autocad 2013, as I would enjoy being able to access it with full functionality? You might want to update your user software profile too. Dynamic UCS might be helpful, and as you already figured out, UCS FACE option to get the ball (sort of) rolling.

I was unable to open this in Autocad 2016, because it appears to have been saved as an Autocad file type later than 2013. I opened it in True View though, and yeah, it looks like a PITA, for sure. In the future you might wish to save your uploaded file as an earlier version file, Autocad 2013, or Autocad 2010, so that more forum members can open it.

Likewise, it is easier to modify something using the software designed to do that, so modify an excel file with excel, modify data by LISP wthin CAD but don't try to modify excel with CAD or a LISP If I remember right, in LISP you can also use (if (numberp TXT) (princ "Letters") (princ "Numbers") ) something like that, numberp for data within CAD

While not what you're asking, you can do =VALUE(text) in excel to read as a number. It's probably easier to edit an excel than the lisp.

You're welcome anytime.