Jos prefers using intaglio printmaking techniques (i.e., the printmaking method, in which the image is incised into a surface and the incised, sunken holds the ink). He will first make a drawing, which he transfers onto a zinc plate. Usually, the contour of the figure will be jig sawed, after which the plate is covered with wax. He then engraves the detailed drawing in the wax, after which the plate will be immersed into a copper sulphate bath. After that he will apply the aquatint technique, using spray paint followed by etching, to obtain areas on the plate with different tones.

 

He usually prints in a single run. He mostly uses the so-called “à la poupée” technique to make multi-coloured prints, whereby ink of various colours are applied onto the plate.