§ by Joel Hess on January 9th, 2008
Okay, you’ve seen your share of sharpening jigs. And they all seem to work pretty good. Well, I guarantee you’ve never seen anything quite like this before: The Sharpening Box. (At least I never have!)
Last night, I watched Gary Blum, a cabinetmaker and toolmaker from Walnut, IA., demonstrate the jig and I have to say, I was impressed. You can read more about the jig at Gary’s website: Blum Tool Co.
According to information on the site, “…the jig consists of a box made of UHMW plastic that is both a honing surface and a storage box for the stones. It has an adjustable angle block which is set in relation to the top honing surface.”
A couple of features that make it unique:
- The angle for honing is set directly from a scale and is easily changed
- The tool has no jig attached to it
- The tool stays set and the stone is moved – a much easier motion
- The stone can be used laterally and in a circular motion as well as back and forth – therefore, the flatness of the stone is not as critical as a back and forth motion, and the edge can be made sharper and longer lasting
- Much shorter and narrower stones can be used very effectively
- The tool references on its back, which is the widest and flattest side
- Can hone angled edges as easily as straight
- Can sharpen very short cutters as well as short cutter with handles, such as butt chisels or Japanese chisels
- Self-contained and portable-stones store inside of box
- Can sharpen scraper blades at a true 90 degree angle very easily and repeatedly – “filing” is done with a diamond stone
- Jig is entirely waterproof for water-stone sharpening
By the way, Gary also makes some pretty cool hand planes as well.
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Filed under Hand Planes, Hand Tools, Sharpening.
§ by Randy Maxey on October 28th, 2007
I remember growing up that my dad always had a sharp pocketknife in his pocket. He still carries one with him all the time. He could never stand not having a sharp knife and sharpened it often. So, I guess I picked up the habit of carrying a pocket knife from Dad.
My first decent pocket knife I purchased for myself was a small, two-bladed Buck knife. It had stainless steel blades and real wood scales. I bought it on my honeymoon and carried it with me every day for about 15 years. Imagine how heartbroken I was when I emptied my pockets one evening and it wasn’t there. I looked all over, but couldn’t find it. A few weeks later, I resigned myself to the fact that it was long gone. Soon after, I replaced it with a Case knife. It, too, had stainless steel blades. Some months later, I pulled into our gravel driveway, and as I was getting out of the car, I saw what remained of my original Buck knife. Actually, it was pretty intact, but the combination of gravel and cars running over it removed one of the wood scales.
When I carried a pocket knife, I used it mostly for opening packages, cutting cardboard, and tightening the occasional screw. (I know…don’t tell my dad.) Every so often, I’d take it out to the shop and sharpen it. But it seemed like it never held an edge for very long (even when I didn’t use it as a screwdriver). I’m no metallurgist and certainly don’t understand the finer points of blade steel, but I wondered if the stainless steel blades were the problem.
It occurred to me that the reason my dad’s knife is always sharp might not be just that he sharpens it often, but perhaps his has a high-carbon steel blade. (I’ll have to ask next time I see him.) I think carbon steel can be sharpened to a finer edge and holds its edge better than stainless steel. All I want is a knife you can almost shave with. I could never get that with my stainless steel knives.
I’ve been intrigued by these little Opinel knives from Lee Valley. The smallest one is small enough to carry in a pocket. And the blades are made from high-carbon steel. The price is right at just under $11US each for the two smaller ones. I’ve been carrying one around in my pocket for a few weeks, so maybe I’ll get a feel for how well the blade holds up to packing tape and cardboard and maybe the occasional whittling (but no tightening of screws). When I got it, it just took a little honing to get it impressively sharp. A lot sharper than my Buck or Case stainless steel knives, anyway. So far, for being an inexpensive knife, I’ve been impressed.
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Filed under Hand Tools, Sharpening, Woodworking.
§ by Randy Maxey on August 11th, 2007
One of the fundamental definitions of a sharp edge is the intersection of two flat surfaces that meet at some angle. Whether it’s a chisel or plane iron, if one of the surfaces isn’t flat, you can’t expect to get a sharp edge.
There’s a running discussion over on WoodNet about if, when, and how you flatten the backs of your chisels. Then there’s the question of what “flat” really means.
Personally, when I buy a new chisel, I’ll use wet/dry sandpaper on a granite tile and work through the grits until the back is polished. Then I’ll work on the bevel to get a sharp edge. After that, the only time I work on the back is to remove any burr after I’ve honed the edge. I’ve had good success with that method and my chisels seem to be plenty sharp. The same holds true with my plane irons.
With western chisels, I only worry about polishing the last ½” or so of the back. Japanese chisels are hollowed out on the back side, making them easier to flatten.
Head over to WoodNet and leave your 2¢ worth.
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Filed under Hand Tools, Sharpening, Woodworking.
§ by Joel Hess on March 2nd, 2007
Tempered plate glass, adhesive-backed PSA sandpaper, precision honing guide for sharpening bevels at 20°, 25°, 30° and 35°. Looks like I’ve got everything I need to get started with some hand sharpening on my workbench, right? Well, sort of.
The truth is, I’ve just finished watching a demonstration of the new Work Sharp™ sharpening system. This innovative new product combines all of the best features of sandpaper sharpening with the quality, ease, and repeatability of a top-of-the-line slow-speed wet grind sharpening system. And for about $100 less.
Work Sharp uses an air-cooled, dry sharpening set up (featuring air flow portals and a series of heat sinks) to keep your cutting tools cool without the mess of a wet system. Its 1/5 hp motor turns a horizontal wheel at 580 rpm, but unlike conventional horizontal wheel grinding systems, where you grind from above, Work Sharp is unique in that you set your chisel flat on a platen below the cutting wheel and use a simple “plunge- pull” technique.
Another unique feature is a slotted, see-through wheel that replaces the tempered glass wheel and allows you to see the cutting edge when sharpening carving and lathe tools. It looks like a great new system and I’m looking forward to putting it to use soon myself. Check out the video on Work Sharp’s website for a demonstration.
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Filed under Power Tools, Sharpening, Work Sharp™.