Specifications: about 35mm/1.38in
Drill type: reamer
Usage: drill hole in metallic steel, castings, aluminum alloy, plastic sheet, gypsum, etc.
1. When drilling, make use to control the revolving speed and continuously add coolant to prevent edge crack. When it is used with high speed gun drill, you should control the switch, alternant on and off to reduce the speed. It is widely used with bench drill, drilling machine, various types of electric drill, etc.
2. If the thickness of the iron sheet is above 5mm, you should drill 1mm first, and then use a positioning drill to drill a hole along the saw kerf for discharging scrap iron