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Messages - J.O_Donnell

#1
General Tormek Questions / Re: Carbide
January 10, 2016, 08:28:46 PM
Here is a link to the paper
Check out this item I found on eBay: http://pages.ebay.com/link/?nav=item.view&id=350098155360&alt=web

This is the cup wheel (similar)
http://www.erniestools.com/pearl-abrasive-t-27-tungsten-carbide-diamond-sharpening-wheel-4-1-2-x-5-8-11-shw045h/

I just learned of the Grizzly, thank you. The link to this forum shows a nice side rest for using the side of the stone. I realized after I posted that I could always consider mounting that paper disc to the angle grinder, I might need RPM that doesn't happen on the Tormek. Although I have cut a lot of carbide, it was all high rpm. Never done it at 120.

But it might be enough. Carbide cuts like butter with the right tools. I have not ordered any diamond paper, either so I have more questions than answers.

Here is a clear picture of a single chip. It has 8 sharp edges, that can be flipped around until you are left with 8 dull edges...
http://www.prosol.ca/Product/Hexpin_Carbide_Chip/393

Thank you guys for your replies. I will acquire one, for certain. I am excited about it.
#2
General Tormek Questions / Carbide
January 10, 2016, 04:47:25 PM
As a young man one of my first jobs was at a carbide sharpening shop. Industrial scale, hydraulic actuated, conical and flat diamond wheels. My chore was angle finding, notating and machine operation, some brazing to replace chips on expensive saw blades, then shaped to match existing so they could run through the machines without crashing. A missing chip is a terrible thing.

I now work as a floor coverer. I am resilient floor cove and weld specialty. We use carbide and diamond for concrete milling, the costs of carbide chips are in the hundreds, diamonds are thousands. Steel blades are still required for shaving welded vinyl and because we have carborundum and quartz impregnated non slip surfaces, my steel blades need constant maintenance. My carbide chips also need similar maintenance.

The carbide is used on buffer machines to scrape residual adhesive. This power scraper is good for 8000sf and then the carbide has a rounded dull edge and no longer as effective. Since I already need to get the T4 and  SVD-185 Gouge Jig to sharpen our steel X acto round gouges, our planer blades, and perhaps our groover blades I figured I would ask the following serious question.

The side of the wet stone is a perfect surface to attach diamond sandpaper, or tungsten grit so that carbide can also be tooled. At this time, my only option is diamond sandpaper for its large flat surface or a tungsten cup wheel, actually unsuitable because of the reduced contact area. What would it take to get a Tormek fixture for carbide sharpening? They are adept at jigs and fixtures, it seems a natural evolution to an already brilliant design.

I need a large flat surface, I have 24 chips to sharpen and since each has a hole in the center I plan to thru-bolt 12 chips at a time and machine the outer perimeter. The side of the wheel permits this. The edge of the wheel would force me to tool one side at a time, and the results might be unequal.

Thanks in advance, Jim