Hi RuiBranco,
RuiBranco wrote:
Can I use plastic wire with three millimeters thick?
Yes you can. You can use this printer with 3mm plastic.
RuiBranco wrote:
I want to extend the printing area, is possible to place these new
dimensions in software with no limits?
Yes you can, but you have to known that you have to extend the heated bed too if you want to print with ABS.
RuiBranco wrote:
For better resolution I can use other nozzles on the printer e.g. 0.1mm?
Yes, you can put the nozzle that you want.
Please visit this webpage, it can help you:
http://reprap.org/wiki/RepRapRegards.