odie
TOTW Team
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- Dec 22, 2006
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Since my scrapers are ground at 75°, and right in-between the recommended ranges of the two supplied Veritas carbide pins, I'm not seeing much practical difference between the burrs I'm getting with them. I am generally using the more stout pin, simply because it's less likely to break......if that's possible! Anyone ever hear of a Veritas carbide pin breaking?
I'm applying a great deal of pressure between pin and scraper top edge, because I'm finding the usefulness of the burr is better, the more pronounced the distortion. So far, I haven't been able to detect any "curl" to the burr......must be that the angle I'm using for the grind is more applicable to this raised burr process.
I'm now using a ceramic honing stone to remove the ground burr, in preparation for the Veritas burr......seems to be doing a great job of this. This is a very fine stone, used primarily for medical cutting instruments. My theory is, the finer the stone, the finer the top edge will be in its intersection with the ground edge. Thus, the finer the cutting edge of the burr will be after raising on the Veritas.
The burr, straight from the grinding wheel, is still the preferred method for all my roughing cuts. The Veritas burr is now my preferred method for finishing cuts. All these years, I had been using a ground burr for finishing cuts, and that may have been an advantage in learning tool handling to get the best cut from a less than perfect burr. The Veritas burr leaves, maybe, 5% better of a finishing cut, and that small difference is golden, when it comes to eliminating sanding, and geometric distortion. Since I've been using a raised burr, I'm noticing my perceived average start sanding grit is about one grit finer than before. I've been able to start sanding much more often at 320.....but, you know this is also dependent on other factors, like species and shape, and the like.......
This mount jig I made up for the two Veritas burnishers is working out great, because it's so quick to put into use, and remove again.
I drew "first blood" the other day, when a scraper slipped in the Veritas. I'm applying a great deal of pressure, so the force which the tool hit my hand was great......went to the bone on one of my fingers, and lots of bleeding! Since then, I'm now slipping a Kevlar coated glove on my left hand when I raise a burr. Only takes one episode like that to shine a light on the proper safety measures!
ko
I'm applying a great deal of pressure between pin and scraper top edge, because I'm finding the usefulness of the burr is better, the more pronounced the distortion. So far, I haven't been able to detect any "curl" to the burr......must be that the angle I'm using for the grind is more applicable to this raised burr process.
I'm now using a ceramic honing stone to remove the ground burr, in preparation for the Veritas burr......seems to be doing a great job of this. This is a very fine stone, used primarily for medical cutting instruments. My theory is, the finer the stone, the finer the top edge will be in its intersection with the ground edge. Thus, the finer the cutting edge of the burr will be after raising on the Veritas.
The burr, straight from the grinding wheel, is still the preferred method for all my roughing cuts. The Veritas burr is now my preferred method for finishing cuts. All these years, I had been using a ground burr for finishing cuts, and that may have been an advantage in learning tool handling to get the best cut from a less than perfect burr. The Veritas burr leaves, maybe, 5% better of a finishing cut, and that small difference is golden, when it comes to eliminating sanding, and geometric distortion. Since I've been using a raised burr, I'm noticing my perceived average start sanding grit is about one grit finer than before. I've been able to start sanding much more often at 320.....but, you know this is also dependent on other factors, like species and shape, and the like.......
This mount jig I made up for the two Veritas burnishers is working out great, because it's so quick to put into use, and remove again.
I drew "first blood" the other day, when a scraper slipped in the Veritas. I'm applying a great deal of pressure, so the force which the tool hit my hand was great......went to the bone on one of my fingers, and lots of bleeding! Since then, I'm now slipping a Kevlar coated glove on my left hand when I raise a burr. Only takes one episode like that to shine a light on the proper safety measures!
ko
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