Born in 1956, Franco Formenti lived in Switzerland where he developps this unique form of art. More than 40 years to practice hand free 3D geomatrics forms. One paint represent 50 hours of work for a small one (23x16) and 100 hours for a bigger one (33x23), the same numbers of pens/pencils are necessary to trace and coloured lines. No errors are allowed when Franco start a new creation, he hasn’t the possibility to erase and to start again.