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. Since 1970 working with computers too, so you can acces large amounts of data....

A in a Cube

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In 2 weeks I will be doing two workshops on the use of the 3D pen for two groups of teachers at a college. They will be guided into the possibilities of using the new tool in their education, but it could also be fun. I made the letter A with black PLA plastic, and the golden cage was made lateron as a cube surrounding the letter A.

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I used a MyRywell Expert pen which can use both PLA and ABS plastics. In the course I will use this pen as well for the teachers to use and test.

Multimedia in progress

In 2 months I will be doing two workshops for teachers that work at a college. I will sow them the ways to use a 3D pen and also let them think on how to use it with their students. For the occasion I will have access to lots of 3D pens, so it will be interesting to see how that goes.

For my art I am testing a few things. This afternoon I made some letters with the 3D pen that have become objects. I placed them on a scanner to make an color-copy of the letters. On that result I put again the original letters and took a digital photo of that on my working table. Next step is to put that image on some places online, like Facebook, IUOMA Network and some ‘pataphiscal platforms, and now also on this www.iuoma.org website.

So from idea to plastic to a color-copy into a digital photo and now going into that digital worlds. Multimedia for sure.

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At the workshops I will probably let the teachers first make a letter of their choice to let them test the 3D pens and to see if they get the idea.  We will collect the letters and will try to make a word of it that guides them into the next assignment. It will be an interactive workshop for sure.

Maybe they should make a cup to to put the letters in:

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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

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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.