Uxcell 3.5mm Straight Shank Hollow Bit Tool Paper Punch Drill for Hole Puncher 2 Pack

Descriptions: Uxcell 3.5mm Straight Shank Hollow Bit Tool Paper Punch Drill for Hole Puncher 2 Pack Specially used for punching tags wall calendars desk calendars books and handbags. Suitable for ordinary paper offset paper coated paper grease film paper leather fabric etc. Overall quenching high hardness not easy to break. 90-degree inner chamfer opening good edge sharpness and strength 80% less resistance than traditional technology not easy to block. Papers should be placed flat when punching. Pay attention to the lubrication of the punch drill. The smaller the pinhole the slower the speed. If the punch is blocked it should be removed and cleaned up in time and reinstalled for use. It is often waxed and lubricated (candle or soap is a good substitute) at the cutting edge of the drill. Taper shank (A) punch drills are suitable for: 150A electric single-head punching machine; Electric punching machine (economical type). Straight shank (H) punch drills are suitable for: 150A electric single-head punching machine; double-head punching machine (office type); electric punching machine (economical type); heavy-duty double-head punching machine; single-head semi-automatic punching machine; automatic punching machine for tag processing. Notices: Reasons for the blockage of punch drills: Papers are not tidy and uneven; gaskets are not put in right place or lubrication are not enough etc.; punched papers cannot be punched repeatedly; If the drilling size is small the pressing rod speed should be slower; the drilling time is too long; the thickness of the drilling paper is too thick. Please wear work clothes and protective glasses to prevent the skin and eyes. Heat is generated during the drilling process. When the product is rotating it is strictly prohibited to touch it by hand. The stacking thickness of the offset paper should be 80% of the punching thickness 60% for base paper 40% or less for grease film or glazing paper. For example: drill bit with 6mm punching diameter and 50mm punching length (thickness). The total thickness of offset paper to be drilled should be 40mm; the master paper or base paper should be 30mm; and the film or glazing paper should be less than 20mm.