Isomorphic Keyboard Piano Overlay

Version 2 is here:
https://www.thingiverse.com/thing:2999652

This is a 3D printable isomorphic keyboard overlay, designed to fit over top of an existing standard piano keyboard.

The keys pivot around a "metal round" which can be purchased at hardware stores.

The files are numbered by descending order in the circle of fifths.

1-E# (F)
2-A# (Bb)
3-D# (Eb)
4-G# (Ab)
5-C# (Db)
6-F# (Gb)
7-B (Cb)
8-E
9-A
10-D
11-G
12-C