Help finding blade angle chart

J

J.D.

Joined
Feb 12, 2006
Messages
342
A couple years ago, there was a post here of a blade angle grind chart, that was in a downloadable file. It was posted by Steven Penner. I had this on my computor, and when my hard drive crashed it was lost, and I have one paper print of it, but would like to have it back in my documents. Could someone give a link to this post? I tried to google search with no luck, maybe I didn't do it right. Thanks in advance for any help.
 
Hitching a ride on this one in case someone comes up with it.

One suggestion for the original poster is to scan it if you have access to one.

Charlie
 
I never really understood the angle chart. My bevel angles are all depending on how tall the blade is + the width of the stock. Same height blade but way different thickness in steel would = different grind angles.

Maybe I just have no clue and dont mean to confuse you.
 
blgoode, I was the same way, until I saw this chart. This chart uses the thickness of the steel, bevel width or grind height, which ever you want to call it, in inches, to determine the angle. For example, a blade of 1/8 inch thickness and a grind height of 1 inch would have an angle of 3.6 degrees on each side. and if you have 1/8 inch stock and a grind height of say 1-1/2 inch the angle would be 2.4 degrees. This chart has stock thicknesses from 1/32- 1 inch and grind heights from 1/8 - 6 inches. it is a neat chart, and if someone is good in math and trig. which I am NOT, they could figure this out some how. Like I said, I have a paper copy of it, and will copy it. But I would like to have a copy back in my computor.
 
For those that want to calculate it, a formula is:
A = arctan((S - E)/(2*G))

Where:
A = angle of flat grind per side
S = stock thickness
E = edge thickness
G = grind depth desired

The chart was generated assuming a final edge thickness of zero.

-- Dwight
 
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