You do not have to purchase your supplies from us however the results of using cheap imported filament in any 3D printer are well documented online, we would recommend only sourcing quality filament through a reputable supplier - we cannot accept any warranty claims arising from the use of filament not approved for use in our machines. 

Spare parts for your printer must be purchased from Zinter to maintain the cover provided by your warranty, use of unauthorised spare parts to repair your printer may not only invalidate your warranty - but may cause damage also.