iuoma.org – Interested in Mail-Art?

welcome to the International Union of Mail-Artists. This Blog gives you information and links to all activities undertaken by Ruud Janssen, who started with Mail-Art in 1980 and is still active.

IUOMA with 3D Pen


In 2014 the first attempt to make the IUOMA-logo with a 3D pen. I plan to produce more, but still am looking for the time to do so.Making these kind of objects is time absorbing since every line is made by hand.

Writing letters with a 3D Pen – Ruud Janssen

2015-01-11 17.36.01 2015-01-11 17.36.03 2015-01-11 17.36.06 2015-01-11 17.36.12

Experimenting with the 3D pen resulted in an interesting collection of objects. I also like to call it ‘writing letters’ because the objects are letters or even envelopes. To document the findings I also wrote two articles that are formally published. have a look at them to read:



These are .PDF files, so you can print or save them if you like.