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Both sets of blades were used on his 28 hp zero turn mower and were from the same manufacturer. Putting our heads together, which does not always turn out well, we decided to sharpen one set of 3 blades on the flat platen, the other we decided to try a hollow grind on an 8 inch wheel.

Our sharpener convinced me to try the flat grind and I have been using it since..the blades actually cut better and last longer now than they did with the hollow grind. Collector of big boys toys: 53 Ford F-100, 34 Chevy hot rod, 02 T-Bird, 57 Chevy Bel-Air hardtop, Hurricane Deck boat, smaller stuff.

Examples of knives with hollow ground blades: Spyderco Howard Viele C42 and Kershaw Ti-ATS-34. Flat Grind Flat grinds are characterized by the tapering of the blade from the spine down to the cutting edge. This style of grind is also referred to as a "V" grind, since the cross section of this grind resembles that letter.

The HG3 Hollow Grinder uses two 6 inch (15.25 cm) cupped wheels to grind the knife blades. The diameter of the wheels never changes with the cupped wheel system which allows knives to be taper ground at the same angle throughout the life of the wheels.

Hollow Ground Saw Blades. Products. New Products. Router Bits. CNC Router Bits. Saw Blades. Shaper Cutters. Boring & Drilling Bits. Planer & Jointer Knives.

The hollow grind calculator is a good point to start so you rougly know what grind height you should have for a given stock thickness and wheel size. Another lesson learnt by mistake, if starting with a low grit belt, leave more on the edge then you planned for to account for the difference of belt thickness in comparison to higher grit belts.

Now cast one eye down one side of the blade, and the other eye down the other side of the blade. This may take some practice, but it's worth it. You'll get a clear picture of the grind lines, where the hollow grind (or flat) grinds meet the blade flats. These lines should match as …

The present invention is generally directed to a fixture for retention of a blade or the like against a grinding member during a grinding operation. The invention is more directly related to such a fixture which is adjustable to maintain a predetermined pressure between the grinding member and a blank (blade) for hollow grinding thereof.

First attempt at a freehand hollow grind fresh off the belt sander. Thanks for all the advice! Any tips on quenching and tempering high carbon file steel? ... A subreddit for the metalworkers who specialize in forging knives and other blade tools. Swords, daggers, kitchen cutlery, carving chisels, etc. Come in, look around, ask a question ...

Hollow grinding tips and techniques. Bob Van Dyke heads to the grinder to demonstrate how he adds a hollow grind to his blades and how he keeps from burning the blade in the process. Highlights. Shape Your Skills when you sign up for our emails. Plus tips, advice, and special offers from Fine Woodworking.

Hollow Grind - Blade Geometry Knife FAQ

The hollow grind is a very common grind for knife blades. Hollow-ground blades offer excellent cutting properties and are more flexible than blades with a different type of grind. They are mainly used to for hunting and outdoor knives as well as kitchen knives. We also hollow-grind our straight razors. Hollow-ground blades are ground on both sides.

Vasyl Goshovsky employs a hollow grind on his working knife's 4.5-inch blade of N690Co stainless steel. (SharpByCoop image) "The most obvious benefit of the flat grind is strength and toughness. The wheel is grinding a flat surface rather than a concave one like a hollow grind, and it removes less material from the blade.

The hollow grind is great for slicing and feels very sharp because it scoops away more material and makes the blade thinner overall. Vasyl Goshovsky employs a hollow grind on his working knife's 4.5-inch blade of N690Co stainless steel. (SharpByCoop image) "The most obvious benefit of the flat grind is strength and toughness.

The hollow grind is a very common grind for knife blades. The bevel, meaning the ground section of the blade, is much thinner in hollow-ground blades than in convex or flat-ground blades. The hollow grind is achieved by holding the blade to the grinding wheel at a right angle, which "hollows" the blade.

The smaller the wheel, obviously the smaller the "hollow". The most common size wheel I have seen over the years is a 10". Personally, when I do produce a blade with a hollow grind, I will most often use a 10" wheel, but because I demand that the grind be "right", and not one of those aforementioned perversions, the size wheel is determined by ...

The hollow grind. For a hollow grind, the blade is ground so that it is slightly concave on both sides of the blade. This thins the blade and enables a very thin, sharp edge, making this style of knife an excellent slicer. Hollow grinds are useful on any knife that needs to be able to slice, making them excellent for every day carry.

A Hollow Grind is found on a knife like the Buck Woodsman because it's ideal for skinning. Full Flat Grind. The flat grind is the simplest type of grind, but it comes in three main varieties. The first is the Full Flat Grind. The Full Flat Grind begins tapering to …

This shows one way to hollow grind a knife. Hopefully it will offer you some tips to help with your grinding.

A hollow ground blade is a knife blade that has been ground down to create a characteristic concave, beveled edge along the cutting edge of the knife. This effect is accomplished by starting the grind below the midpoint of the knife, creating a small wedge with concave sides that is extremely sharp and very easy to care for.

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2) Blade hollow measurements refer to the radius of the circle that is cut into the blade by the grinding wheel of the skate sharpening machine. The grinding wheel actually only grinds a small portion or arc of that circle into the blade. (See grinding wheel figure) Common hollows are 3/8″, 7/16″, 1/2″, 5/8″, 3/4″.

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I now sharpen plane blades with a Tormek with either 200 or 250mm wheel. This produces a hollow grind which is much less hollow than smaller diameter wheels. I do believe that much of today's thinking about hollow grinding is leftover from the small diameter dry grinding days decades ago. It does not reflect larger diameter Tormek grinding.

Perhaps the easiest to grind free hand but still need some experience . I can grind free hand but not as fast as i like .Fast moving belt and high pressure make it little tricky for me to hold steel steady and comfortable . . .I make one jig …

I'm a big fan of hollow grinds on all my chisels and plane blades. I picked this up from Krenov's book, "The Fine Art of Cabinetmaking" a LONG time ago. I use a cheap 6" Delta high speed, (yes high speed), grinder with a 60 grit white wheel because the hollow is pretty deep. Just go lightly and have a can of water to dip the edge in.

The cambered grinding wheel only makes contact in a small area, so you're sweeping the blade back and forth across that high spot on the grinding wheel. I guess in theory, if the back is flat and the hollow grind is inconsistent along the width, it won't matter because a 1000 grit stone will even out all the peaks and valleys on the working ...

I think blaze orange 60 grit is a little to aggresive for hollow grinds as well . maybee just for a few passes then move on to 100 and so on . Im finding the wider the blade the harder it is to do as well and you cant make as wide of a hollow ghround . I do know this hollow ground knives are easier than flat grinding blades but thats just me.