In the first place when we desing the tool should consider the factor of the gap of blade ,pressing material,The upper and lower edge of the cutting edge ,cutting surface friction, cutting speed, and mold use heating etc...Professional engineer can design a set of high precision tool to prevent burr occur .
If the burr occured after mass production , There are some menthod to fix up ,eg eletropolishing ,machine vibrate etc... It's depend on your quality request and burget .
If you have any question about burr can contact our engineers info@jingyiprecision.com