A device for manufacturing a printer cartridge, the printer cartridge having a doctor blade and a developer roller, the doctor blade being configured to regulate the amount of toner delivered to the developer roller, the device comprising: (a) first surface, the first surface lying on a first plane; and (b) a second surface positioned opposite the first surface, the second surface lying on a second plane, the first and the second plane being parallel to each other, the second surface comprising a flat portion, the flat portion being configured to contact a portion of the doctor blade, wherein when the flat portion contacts the doctor blade portion, the device applies pressure to the doctor blade portion.