Hardwarekiller from the german reprap forum used my Merlin nozzle to print pretty impressive stuff. You have to hold it in your hand to realy appreciate how small these things are!
http://forums.reprap.org/read.php?238,227908,228130,page=1#msg-228130
What’s the diameter of the nozzle ?
0.3 or 0.4 if i remember correctly. The hotend supports airbrush nozzles that you can replace easily, you get several sizes between 0.2 and 0.5 that way.
Wonderful! Are you printing always in ABS for those small sizes ?
Michael did all his tests with ABS, but another member of Hackerspace did very similar sizes with PLA