Used in conjunction with a standard bench grinder, the attachment gives fast and accurate sharpening of HSS twist drills from 3mm – 19mm or 1/8 – 3/4″ diameters. The diecast body has pre – set notches at 41° (countersink), 49°, 59°, 68° and 88° which cover most tip angle requirements.
|
Angle |
Overhang |
Usage |
|
88° |
29.5mm |
Hard materials, thin sheet. Helps to prevent snatching. |
|
68° |
Half drill diameter |
Small drill for high volume production. |
|
59° |
Half drill diameter |
General purpose drilling. |
|
49° |
Drill diameter |
Soft materials, (plastic, wood, lead, copper, light alloy, etc.j |
|
4 I ° |
As required |
Countersinks. |
