Technical Note 
 U3 type universal sharpener can be used for grinding various types of semi-rounded shape or anti-cone angle, high-speed steel and carbide engraving tools and unilateral or multilateral tool. Grinding dividing head can operate in 24 locations in order to facilitate grinding any angle and shape, just replaced the head of the attachment indexing without any complex steps can be carried out milling cutter, chisel, drill, car knife, ball-end cutter grinding. 
 Introduction of special attachments: 
 Blade Grinding Attachment: homes for all kinds of blades, and adjust by a fixed attachment to the appropriate angle, you can be grinding. 
 Tool grinding accessories: high-speed steel and carbide cutting tools can be fixed in the Annex, the tool must be a fan-shaped body is the attachment can be replaced, it is the task of clamping the tool center position in the annex and maintain the required level. 
 Cutter grinding attachment: grinding of end mills is to take a free device, use it to rotate to the desired attachment point, and guide the rod horizontally in accordance with translation and localization into the adjustment of the diameter of end mill , sleeve chuck diameter 28mm. 
 Drill Grinding Attachment: grinding on the drill: drill diameter to the surface: sharp angle: 118 ° Machinable capacity :3-8mm diameter. 
 Universal Grinder U3 other special features: 
 1. Chuck can clamp the maximum 28mm, 
 2. Can be abrasive blades of various shapes, 
 3. Containing four sets of special accessories: Drill grinding attachment, lathe tool grinding attachment, blade grinding attachment, cutter grinding attachment.