FI- DIY Adjustable Hole Saw Drill Bit/Cutter: 30mm to 120mm

About this Product:

Extent of Boring Diameter:1-3/16(30mm) 4-3/4-(120 mm)
Extent of Boring Thickness:1/8”(3mm)-2″ (50mm)
Materials that can be bored:
– Veneer Plywood Wood board, Plaster-board.
– Thinasbest-slate,etc.
– Use the twist drill for boring thick wood, and the chisel end drill for thin wood.

How to use Free-Doughnut”
-Set both cutting-blades on blade-holders tightly and correctly as shown in Figures A, B and C are correct.
-To adjust the size locate the inner edges of the blade holders against the size graduation. For example number ” 40 ” for a 1 (40mm) dia. Hole.
-Set two blade holders at the desired graduation on the measure – bar by tightly screw – in the hex nuts using an L-shape hex wrench.
-Use the chisel end drill when boring thin wood while use the twist-drill when wood is thick.
-Before boring. Hold two sides of veneer or timber firmly by stepping on it. Then stare boring after cautiously setting the twist-drill or chisel end drill at the centre of the desired hole. When using power-drill, be sure to contact the cutting blades gradually and slowly on the object to be bored. Abrupt contact of the blades on the boring object can give shock to your hands.
-When deep boring-1″ (25mm) up to a maximum 2″ (50mm)-is desired, use the Free-Doughnut from one side of the timber, and then start boring again from the other side until the cutting blades bore through a hole making the doughnut-shaped disc.As shown in figure
-By way of using optional measure-bar.large hole with a maximum diameter of 8 ” (200mm) can be bored.

What’s in the box
1 x Bebona Adjustable Hole Saw Circle Cutter Drill Bit