Well, finally I've payed a visit to AltLab, a small hackerspace here in Lisbon. And what's an hackerspace? Imagine a room packed with tools, usable "junk" and the most important thing of all... t(h)inkerers :)
Maurício Martins (the coordinator of
AltLab ) introduced me to Tiago Rorke, a guru on ReplicatorG, Skeinforge, GCode and Makerbot operator.
For 3 hours, I watched and learned how important is the calibration of the printer, the ability to control all variables involved in 3D printing.
Can't wait to get back :D