Similar idea to fixed prints (see sources) but customisable to your own temperatures and with some test features added. Unfortunately THIS WILL NOT WORK with customizer as it needs the excellent stencil font "stencil_fix.dxf"; from romankornfeld http://www.thingiverse.com/thing:100779/#files I have contacted the powers to try and get it added. (But after several attempts I have had no response!!)Create gcode. Edit gcode file and add M104 commands after each label change. e.g. if label height is 20 search for G1 Z20 and put in the M104 command after the next G92 E0 then search for G1 Z40 and so on ...