A Simple Drill Grinding Aid

Model Engineers' Workshop|May 2020

A newcomer to our hobby was having trouble sharpening drills, so Howard Lewis made a simple aid for him

- Howard Lewis

This is NOT a precision drill grinding jig, purely an aid. It needs to be set (preferably by clamping) parallel to the face of the grinding wheel.

The grinding is manual, and totally under the control of the operator.

In use, the drill is laid in the vee and one lip brought into gentle contact with the wheel and rotated. When that face is satisfactory, the second face is given the same treatment.

It is important that both lips of the drill are the same length, if it is to cut to size. Unequal lengths will bring the point off centre, resulting in an oversize hole.

Drill grinding gauges are available, or a steel rule can be used, to check that the lips are of equal length

هذه القصة مأخوذة من طبعة May 2020 من Model Engineers' Workshop.

ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.

بالفعل مشترك ? تسجيل الدخول

هذه القصة مأخوذة من طبعة May 2020 من Model Engineers' Workshop.

بالفعل مشترك? تسجيل الدخول

المزيد من القصص من MODEL ENGINEERS' WORKSHOP مشاهدة الكل

Model Engineers' Workshop

Readers' Workshops - Patrick Cubbon

Patrick Cubbon describes his workshops – a portable one from 1963 and the current accommodation

2 mins |

May 2020

Model Engineers' Workshop

Desktop Gear Hobbing

Toby Kinsey has designed this fascinating piece of gearmaking equipment

9 mins |

May 2020

Model Engineers' Workshop

The John Stevenson Trophy 2020

Many readers and forum members will remember John Stevenson, a contributor to MEW but best known for his larger-than life presence on the Model Engineer forum.

3 mins |

May 2020