•April 17, 2013 • Leave a Comment
I frequently peruse the blog links at Joseph Sellers’ Unplugged Shop and was pleasantly surprised to see three sharpening posts listed today. Matthew at Workshop Heaven describes how to sharpen a shoulder rebate plane, Jon Mac at Spoon Carving First Steps teaches about sharpening the hook knives he uses for carving spoons, and Ralph Beaumonot at the Accidental Woodworker shares his thoughts on sharpening chisels and plane irons.
And, of course, Joel at Tools for Working Wood came through once again with his most excellent piece on The Tools of Stropping.
All in all, a good week in sharpening! My thanks to all. Keep ‘em sharp!
•April 11, 2013 • 2 Comments
We can’t be there. Linda and I are sad and sorry that we’ll be unable to attend the Handworks gathering after all. Two years ago we were invited to attend Yom Hoshoa, Holocaust Remembrance Day, in Themar, Germany, the town where Linda’s father grew up. I wrote a little about our trip here. This year they’ve planned a follow-up event. We’ll attend the dedication of a stolperstein, “stumbling stone” placed in the sidewalk in front of Linda’s father’s home. We tried to fit both events into the schedule but there are only so many days in a month. So we changed our Cedar Rapids tix for Frankfurt.
Hexenturm (witches tower) in Themar
I know everyone will have a great time Iowa — Handworks will be a field of dreams for woodworkers. I love hanging out with fellow tool-makers (we are very cool, just ask us) and will miss everyone’s company.
To make up for bailing out on Handworks, Hock Tools is offering a 10% discount on all orders placed during May through our shopping cart. Just write “Handworks Rocks!” in the comments box to receive your discount.
From a previous post:
A very impressive roster of 27 hand tool makers and woodworking enthusiasts will gather in the historic German village of Amana, Iowa, May 24-25, 2013. This auspicious event is called Handworks, Woodworking Tools and Traditions and promises to be an exciting but relaxed, quiet get-together of the like-minded, open to the public with free admission. The Amana Colonies offer a rich array of historic recreational experiences with plenty of food and lodging while Handworks offers a rare opportunity for a fascinating — scintillating, even! — visit with some of the world’s finest tool makers and woodworkers. Check out the list by clicking on the image above. Cool, huh? Kinda like Woodstock for woodworkers. Kinda. With sausage and beer.
So mark your calendar, make some reservations and do not miss this historic event in a historic setting. … Heaven? No, it’s Iowa!
•April 10, 2013 • Leave a Comment
My friend Kent is evaluating a new knife sharpening system. It works in a way similar to the familiar Lansky system where the knife is clamped into a fixture and the abrasive “stone” is attached to a rod that slides through a hole in the fixture such that the abrasive is always in contact with the edge at the proper angle. This system allows the abrasive to stroke either parallel or perpendicular to the edge. His question to me was how the edge would perform with the scratches running in one orientation or another.
This issue has come up before. There is some concern expressed by woodworkers that side-to-side sharpening will weaken the edge as it introduces parallel scratches. Those scratches, it is feared, will cause the edge to break off along the scratch-line. While this may be the case with very coarse grits, by the time you’ve polished to a proper woodworking edge, abrasive scratches are difficult to detect even with an electron microscope (see pages 218 – 219 of The Perfect Edge for micrographs of edges honed with various abrasives). I can’t imagine an edge failure caused by half-micron scratches. I use a side-to-side motion when I hand-hone a blade, and a to-and-fro motion when I use a honing guide. With either method I hone to 8000-grit and remove the last little burr with a chromium oxide-charged strop. The cutting actions of the resultant glassy-smooth edges are indistinguishable.
The Perfect Edge (page 179)
But all that is about an edge for a hand-held woodworking tool. An edge that gets pushed into the wood, shearing the fibers in its path. The aforementioned knife sharpening system is designed for knives of the hunting-, fishing-, kitchen varieties. The requirements for a knife edge differ considerably from those for, say, a chisel. A knife is much less often pushed into that which it is cutting. Usually the edge of a knife is being slid through it with a sawing motion. There are some kitchen prep cutting actions where the knife is simply pushed through the food: chopping celery or broccoli, slicing cheese, for example. But a ripe tomato, raw meat or a loaf of French bread require an edge with some “tooth” on it to allow it to dig in. A polished edge (8000-grit or so) will glide over a ripe tomato skin without cutting but one that was honed to about 1200-grit will cut like crazy. And that soft French bread will need a serrated knife — an actual saw — or you’ll just mash it flat in the effort.
The point to all this is simply that the edge you need depends entirely on what you intend to cut. Ultimate sharpness and practical sharpness are not necessarily the same thing.
•March 14, 2013 • Leave a Comment
I have cadged sharpening info for this blog from Rob Porcaro in the past (here) and I’m not ashamed to admit it. Rob does high quality, thoughtful work and describes it in clear detail in his Heartwood blog. His latest posts are about his sharpening station. They merit a look. Rob tells me he has been using and refining this setup for about ten years and finally feels ready to pass along what he’s learned.
Some woodworkers consider a dedicated sharpening station a luxury but I consider it as important as your bench. And, like your bench, its design needs only to fit your sharpening gear, ergonomic needs and honing proclivities. Part I lays out the project overview and Part II begins the build process. The rest of the steps will follow so check in often with the Heartwood Blog. Nice work, Rob!
•February 27, 2013 • Leave a Comment
Another well-written, informative blog post from Joel, at Tools for Working Wood which I purloin with impunity. (This one has color illustrations!) This is a sharpening blog, after all, and I’m always on the lookout for sharpening tips, tricks, gadgets and gear that I agree with and think you should know about. Joel’s latest post is The Mechanics of Stropping – Why Stropping Works. Once again, I agree with him completely — a good analysis of what stropping is all about and how to put it to the best use. Thanks again, Joel, I appreciate your ongoing contributions to our community.
“This is a really great book”
And, yes, I include a bit about stropping in my book, The Perfect Edge, The Ultimate Guide to Sharpening for Woodworkers, on pages 110 and 111. It’s out in paperback (Buy Paperback Now!) now but we still have a limited (dwindling) supply of hardback copies (Buy Hardback Now!) in stock.
•February 15, 2013 • Leave a Comment
Popular Woodworking’s editor, Megan Fitzpatrick, wrote a review of our Scratch Stock. Her blog post is here (there’s a video!) and the review itself is here. You can buy a HOCK Scratch Stock by clicking here.
From HOCK TOOLS.com:
HOCK TOOLS #SC075
HOCK Scratch Stocks are made from tough, wear-resistant bamboo plywood. We’ve included two spring steel blades, one of which has a quirk-bead shape cut into it, to get you started using your Scratch Stock with no more than final honing. Other shapes are up to your imagination and are cut into the blades with files and slipstones.
The body measures 3/4″ x 1-1/2″ x 4-3/4″, the blue-tempered spring steel blades are .050″ by 3/4 x 1-3/4″
HOCK Scratch Stock #SC075 $30.00 Buy Now
Extra blades for the Scratch Stock are available in four-packs:
Four-Pack of Blades for Scratch Stock #SCB075-4 $6.00 Buy Now
Instructions for using the Scratch Stock, including how to make the cutters are here.