I made this special box from Blue and Green ABS in which I now hold the 4 IUOMA logos I made with the 3D pen as well. Al kind of colours and versions for a basic idea of a logo with the 5 letters IUOMA.
IUOMA logo with 3D pen
A new logo for the IUOMA made with the 3D pen on April 29th 2016 by Ruud Janssen