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Old 02-27-2019, 05:50 PM
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Steve Lindsay Steve Lindsay is offline
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Default BULLDOZER graver point

Thanks to Otto Carter for sharing his BULLDOZER graver point! Here is a fixture to help make the point. If you are into some harder metals and breaking points, this fixture can help to modify the cutting edge with a very tiny squared off facet on the cutting edges that provide a bulldozer effect. www.AirGraver.com/news.htm





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Old 02-28-2019, 06:03 AM
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Default Re: BULLDOZER graver point

Steve, is this similar to what is known in the machinist trade as a "Negative Rake?"
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Old 02-28-2019, 07:44 AM
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Default Re: BULLDOZER graver point

Quote:
Originally Posted by Crazy Horse View Post
Steve, is this similar to what is known in the machinist trade as a "Negative Rake?"
Yes.. Well maybe more like a positive rake cutter with a negative rake honed on the cutting edge.
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Old 02-28-2019, 07:51 AM
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Default Re: BULLDOZER graver point

Instead of dubbing just the tip, this dubs the entire leading edges. You only need to do it a tiny bit.
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Old 02-28-2019, 05:52 PM
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Default Re: BULLDOZER graver point

Otto, I know from drilling brass and bronze that we would put a flat or negative rake on our drill bits and it would cut those metals much better.

I am assuming that this (flat) tool would be used for relieving background. The tiny (0.010???) flat would make for a very strong edge as well as lessening the tool from digging in. Am I correct?
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Old 02-28-2019, 08:40 PM
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Default Re: BULLDOZER graver point

I make a super thin flat. Maybe one thousandth. I make any cut I need to in tough metals.
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Old 04-04-2019, 01:02 PM
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Default Re: BULLDOZER graver point

Hello Steve,

To prevent breaking on hard metals, I changed my graver face from 45 to 50 degrees and dubbed the point.
Can I use the BULLDOZER tool or will I have to change my gravers back to 45 degrees in order to use it?
Also will this tool works better than changing the angles for this purpose?

Thanks
Eli
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Old 04-04-2019, 01:50 PM
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Default Re: BULLDOZER graver point

Hi Eli, It works with any face angle.. 45..50 etc.
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