Thread: To cut Cleanly?
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Old 11-29-2006, 08:51 AM
Tim C Tim C is offline
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Join Date: Apr 2006
Location: Cutler Bay, So. Florida
Posts: 293
Default Re: To cut Cleanly?

One thing that you should take into account when you are shaping your gravers is that you need to stay within 50 to 65 degrees for your “Included Angles” (IA).
The IA is the combination of the “face” angle and the “heel” angle.

If you are using a 50 degree face angle, and a 17.5 degree heel angle, this adds up to 67.5 degrees. This is 2.5 degrees over the included angle range you have to work with.
This range of angles is taken from lathe and mill operators handbooks over many years.
Since engraving uses a similar type cutting procedure as a lathe or mill, these numbers are very helpful in setting up your cutting tools.

If you lower either the face or heel angle by 2.5 degrees from what you have been using you will see that the gravers will not raise that edge you talk about. Your tools are plowing through the metal, this is why you are getting the raise edge.

There are always exceptions, but you will rarely go beyond the range of these numbers.

Try it, I think it will help you out.

Tim
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