Thread: Drilling Steel - Angle of Cutting Face

G'day Glenn,

We were taught in trade school to sharpen to an included angle of 118 degrees for steel, 120 is close enough.

Have fun!

Originally Posted by Tankstand

G'day Glenn,

We were taught in trade school to sharpen to an included angle of 118 degrees for steel, 120 is close enough.

Have fun!

Wot Tankstand sed .

You can make a gauge from two hex nuts ,place two flats together and the angle between the upper and lower faces will be 120deg.

Hope I explained that clearly .

Kev

many years ago.........................Nah! You don't want to hear that one

At Apprenticeship School,
one of the items we made was a Brass Drill gauge.
Hole sizes from 1/8" up to 1/2" inclusive, all evenly spaced; in neat Parallel lines.

On the side was a cut-out for sharpening Drills.

YES!
Mine was 120*
Still got it

As woodlee said or if you have one hex nut place the drill over the nut any two faces of a hex nut are at 120 deg, but its more important to have both flutes the same lendth , have the rake right and don't overheat the drill when sharpening than getting the angle at exactly 118 or 120deg

Gidday

Yeah we get taught 118 degress at trade school too for Mild steel. I saw a chart on the net somewhere I think Will keep an eye out for u

Regards Lou

I just scanned these pages from the engineers black book for your information.

If you can't read the images, here are the full sized ones.
http://www.mediafire.com/imageview.p...qejhf0&thumb=4

http://www.mediafire.com/imageview.p...dmxnbm&thumb=4

Hope it helps.

Robert

or purchase the book from here and get the drill sharpening gauge free ...thats what the ad says anyhow
http://www.justtools.com.au/prod3321.htm
Pete

Originally Posted by fxst

or purchase the book from here and get the drill sharpening gauge free ...thats what the ad says anyhow
http://www.justtools.com.au/prod3321.htm
Pete

This book is a wealth of information ,
well worth the money that my employer paid for it.
Good onya boss. much handier than an ar*se pocket in a singlet.

The gauge fits in the back cover .

Kev

Fellas, thanks again for your excellent assistance. Great info.

Regards
Glenn

I agree. I have the older version of engineers little helper, and it is looking fairly worn out with the use it gets. Invaluable little book IMO.

SC, you may want to have a read here too for more info.


Cheers................Sean