Read the other installments in the “Sharpen This” series via this link.
The burr – how to make it and how to remove it – confuses many beginners. Many underestimate its importance. Others disagree on how to remove it.
First, what the heck is it? The burr is a tiny curl of metal that appears on your edge when you birth a zero-radius intersection. It’s important because it’s the only practical way to ascertain that you have created a zero-radius intersection and that your edge is ready to polish.
Here is what is important (and not) about the burr:
The burr needs to exist along the entire edge of the tool. If you have a burr in a few places but not others, you need to rub the edge on your stones until you create a consistent burr.
If you cannot create a consistent burr, do not polish that edge with finer abrasives. Instead, switch to a coarser sharpening media. The coarser abrasive will quickly remove the dull areas of your edge and give you that consistent burr.
If you have a consistent burr, don’t worry too much about the scratch pattern on its edge. The scratch pattern becomes more important at the polishing stage (which is the topic of the next entry on this series).
Don’t try to break off the burr with your fingernail. I have damaged some edges this way, sending me back to the coarse stones to make a new burr.
Once you have a consistent burr, there are several schools of thought on what to do next.
Leave the burr alone until the very last. Polish the bevel as high as you want to go. Then remove the remnants of the burr using your finest sharpening stone by rubbing the back of your edge against your finest stone. This strategy works quite well.
Deal with the burr on every stone during your sharpening process. So after you create the burr on your first stone, rub the back of the tool on that first stone to remove the burr. Then move to the next polishing stone. Work the bevel and then work the back on that stone. And so on. Likely you won’t be able to feel a burr created by the finer stones. Work both the bevel and the back on every stone, all the way to your finest stone. This strategy also works quite well.
Sliding the edge through softwood will remove the remnants of a fine burr.
3. After polishing the bevel, remove the remnants of the burr on the back (you might not be able to feel it) with a non-sharpening media, such as a piece of wood or your palm. This strategy is old school. You rub the bevel and back against your palm. Or you slide the edge through a piece of softwood. No surprise: This strategy works quite well.
Removing the Burr The debate on how to remove the burr has caused a few small wars in the Balkan states. Don’t fall for the fundamentalist talk on the topic. The only “wrong” way to remove the burr is when you use a soft media, such as a waterstone. You can actually mash the burr into the soft surface of the stone, break it off and embed it in the stone.
This is bad because the next time you sharpen, the broken burr will act like a piece of glass sticking out of the asphalt – it will mangle your new edge. This has happened to me. It sucks. (To avoid this problem on soft stones, begin with the back of the tool cantilevered off the stone and then pull it onto the stone. The corner of the stone will remove the burr, preventing it from embedding in the stone.)
So you might remove the burr by putting the tool’s back flat on your polishing stone and moving the tool. That works fine.
Avert your eyes! It’s the tricksy ruler trick.
Or you might prop up the back of the blade on a thin ruler so you polish only the tip of the back to remove the burr (people call this David Charlesworth’s “Ruler Trick”). While some will tell you that using the Ruler Trick will make you sterile, reduce your IQ and make toe fungus grow on your face, that’s crap. The Ruler Trick is just another way to remove the burr. It works fine.
I apologize if these entries seem to have the same pattern (you need to do this; how you do it is unimportant). But that’s exactly the same with the burr. You have to create one to get a zero-radius intersection. Then you have to remove it. How you do this is fairly unimportant.
Next up: How to polish an edge and how your particular method is unimportant.
This week I had to spend two hours in the dentist’s chair. And if that wasn’t bad enough, I was “Clockwork Orange-d” into watching two hours of a TV program about creative storage solutions for the home.
Some of the examples I remember over the whirring of the dental Dremel:
Hinge your steps and create trap doors on the landings of your stairs to make small bins in the wasted space between your stringers.
Find stud walls that are used for utilities and turn them into built-in chests of drawers.
In attic spaces, create sliding racks on the interior of a high-pitched roof. You slide giant plastic bins into the racks – it’s a bit like a top-hanging drawer.
Through the entire program I wanted to throw up – but that was mostly because I have a sensitive gag reflex. But it was also because these “storage solution” programs neglect to mention the easiest way to control clutter: Get rid of it.
Take your excess clothes, books and nicknacks to a worthy charity so the items can plague the homes of others. Give your excess tools away to Habitat for Humanity’s Re-Store or a local tool-sharing co-op. Burn your scraps for heat. List your excess machinery on Craigslist. It can all be done in a day, which is easier and better than building some lame hidey-hole in your house that will require three trips to the home center, four screaming fits and five bad words to complete.
Possessions are like fingernails – they need to be constantly trimmed (or else this).
FIG. 1. THE TEETH SHOWN IN DETAIL AND HOW FILE IS HELD. A. Filing gullet of saw teeth. B. Sharpening long edge of teeth. C. Filing short edges. D. Amount of set required. E. Set extends halfway down teeth only
A reader has sent us a sketch of the teeth of a saw he wishes to sharpen. These are the farmer’s American or lightning type, and are intended for cross-cutting. He enquires the correct bevel and set to give the teeth. We give the reply here as it will probably interest other readers.
The sharpening is rather different from that of the ordinary cross-cut handsaw. In the latter the file is held at an angle varying from 45 to 60 degrees with the line of the blade and is kept perfectly horizontal. The back of one tooth and the front of the next are sharpened in one operation. In the lightning tooth one side of one tooth only is sharpened at a time. There are three distinct operations, of which the first is gulleting (A, Fig. 1), in which a special file with rounded edge is used. In this the file is held at right angles with the blade and perfectly horizontal. The filing of the long edge of the end teeth follows and for this the near end of the file is dropped so that it points upwards at an angle somewhere in the region of 45 degrees and at about 80 degrees with the line of the teeth. The exact angles cannot be given because it is largely a matter of individual handling. However, the bevel at which to aim is one in which the teeth are in alignment with an ordinary three-cornered file when rested horizontally across them at 60 degrees, as in Fig. 2.
FIG. 2. TESTING BEVEL OF TEETH This is a test only and does not represent the way the teeth are sharpened
The professional sharpener does not need to do this, but it is a handy test for the inexperienced man. Fig. 1 at B shows how the long edge is sharpened. The short edges of the end teeth and the middle teeth follow, and for these an exactly similar process is followed (see C). If, after several sharpenings, the teeth tend to get out of shape, they should be corrected by running the file straight across at right angles and horizontal. When true the sharpening as already described follows.
With regard to setting (this of course precedes sharpening), since lightning tooth saws are generally used for green wood which is liable to cling, a full set is desirable. If an impression of the points of the teeth is taken on paper it will generally be found that they will register about twice the thickness of the blade. D shows about the right amount of set. As in all other saws, the set should never extend more than halfway down the depth of the tooth (E).
The deluxe edition of “Roubo on Furniture” is currently at the bindery in New Mexico. There, in addition to binding the pages, employees are making the custom slipcases for the books.
The latest word we have from the bindery is that the job will be complete in early or middle August. When we get more exact information, including a shipping date, we will post it here.
We are as excited and anxious about this book as you are. While we love the standard edition of “Roubo on Furniture” (shipping now for $57) and enjoy the ability to search the pdf version, we want the deluxe version. We want its huge 11” x 17” pages (the same size as the original l’Art du menuisier”). We want the incredibly crisp printing. Heck, we just want a book that is worthy of all the years of labor that have gone into this project from everyone from the translators to the designer to the indexer.
‘La familia en el taller de Jose’ end of 17th c., Anon. Photo: Morton Casa de Subastas.
While searching for examples of lowrider (Roman-type) workbenches for Chris, I started to find images of workbenches from the Spanish Colonial era in Mexico and South America. As this is a field that is underrepresented, Chris and I thought it would be a good idea to assemble them for study. I found woodworking images from seven countries, with the majority from the early 17th through late 18th centuries.
Except for a very few, the majority of Spanish Colonial images are of religious scenes. In Europe, the shift from religious to secular images occurred earlier, but in the Spanish-controlled lands religious orders of the Catholic Church set up craft guilds for the converted indigenous peoples, and controlled much of the production of painting and other arts until the 19th century.
Paintings from Spain were used to communicate religious ideas and also served initially as examples to copy. And many copies were needed as churches were erected in every settlement, and new arrivals from Spain built new homes. In a twist that did not occur in North American, the Amerindians in Spanish-controlled territories began to infuse elements of their ancient cultures into the art they produced.
Along with workbenches, you will also see the basic tool kit in use, some sawing, angels and a few cats.
Mexico
In the image at the top (lightened to see detail) Joseph is using an adze at a simple staked bench. Note the cabinet in the upper left corner with the basket of tools and two planes. You will not see all of Joseph’s workshops so neat and organized. And there is a parrot.
The painting above shows a simple bench with a substantial top and stretchers. A wall cabinet with a door is somewhat unusual in colonial paintings. Jesus has contrived a support for sawing on his own, no angels needed. This painting is probably a close copy of a European painting.
‘La Sagrada Familia en el taller de Nazareth’ 17th c. (?). Location unknown. Photo: ARCA.
The painting above is from Oaxaca. Joseph and Jesus use a low and very long bench to support their sawing. There is a tool rack on the back wall and strewn about the floor are a selection of planes, chisels, an adze, square and mallet. It looks like Joseph is using his leg and a short bench as an additional support for the piece they are sawing.
In Mexico in the 18th century a type of secular paintings were made to illustrate a complicated and legal caste system. Very briefly: with a population of Iberian Spanish, colonial-born Spanish, Amerindians and Africans there were bound to be intermingling; racial mixtures were used to determined levels of status. Casta (caste) paintings generally illustrated 16 mixtures.
In the secular trinity above we have a nice example of the staked bench, although a bit higher than Chris would like, and a small selection of tools.
Casta painting by Francesco Clapera (1746-1810). Denver Art Museum.
Of the hundreds of Casta painting I looked at most of the craftsmen were shoemakers, so I was surprised to find some carpenters. With adze in hand he works the wood supported by his bench and child.
It is highly likely some of the workbenches are exact copies of benches in European paintings. As more immigrants and members of religious orders arrived, more paintings and other artwork was available to copy. However, I think the Casta paintings and paintings from missions point to the type of bench most commonly built and used in mission shops and by craftsmen working in city shops.
The Spanish-controlled lands in the new world became part of a global trade network that extended from Spain to Asia. Via “La Nao de la China,” otherwise known as the Manilla Galleon, precious metals found in the New World, especially silver, were transported to Manila to trade with Chinese merchants.
The route of La Noa de la China.
The Manilla Galleons ran from 1565-1815 and ultimately completed two voyages a year using the largest ships in the world. The goods from Asia landed in Acapulco with some distribution in the New World. The bulk was moved over land to the Atlantic Ocean and thence to Spain. The human cargo consisted of slaves and freeman and with them the colonies were exposed to new materials, methods and influences.
Top: ‘La Anunciacion’ from Balclis Auctions, Barcelona. Bottom: ‘San Jose ante Maria’ Museo America, Madrid. Both 17th centrury.
One example is the use of mother of pearl for inlay (a craft the Japanese had perfected) which became known as enconchada. In paintings it was generously used to impart a richness to the subject. In dim churches and homes, the garments of Mary and Joseph, angel’s wings and the embellishments around doors and windows would glimmer and glow.
Back to the benches. Similar low staked benches, one with stretchers. On the left there is the not-recommended tool storage above the dishes. On the right, we have a sensible woodworker with only a gluepot (?) and a smaller saw on the shelf and a nice basket o’tools.
In the Mexico gallery there is a painting with bench that may be a reproduction, more glowing, some polychrome sawing and a vista. Click on each image for a description.
To wrap up Mexico here is a 19th century bench of a master carpenter.
The legs look like they have been replaced. The bench is 228 cm long and 127 cm wide. Chris commented that he suspects the face vise screws are so long to accommodate sawing pieces for veneering. My contribution is to name the nuts “double-bunny ears.”
Colombia
‘El taller de San Jose’ first half 17th c. Anon. Colecciones Parroquia de Egipto, Bogata. Photo: benrepubcultural.org
Flemish paintings brought to the colonies introduced the idea of spiritual scenes warmed with details of domestic life. This is very likely a close copy of a European painting.
Jesus is a bit older and has his own bench. Both benchtops seem to have holes for pegs (or a holdfast) to use for work holding.
The right leg on Joseph’s bench seems to have holes and perhaps a holdfast.
‘Hogar de Nazareth o Trinidad doble’ 17th c. Anon. Private collection.
This painting is from Medellin. The staked bench has a substantial top and legs. Tool collection on the ground and a cat.
‘Sagrada Familia’ (1657-1710). Gregorio Vasquez de Arca y Ceballos. Iglesia San Ignacio, Bogota. Photo: ARCA.
Nice heavy bench top and a face vise with indeterminate nuts.
‘Hogsr de Nazareth’ 17th c. (?). Anon. Private collection. Photo: ARCA.
Staked bench with a very skimpy top and wonky legs, but you get the idea. The same set of tools strewn about. Baby Jesus is not using a safe chiseling method.
‘San Jose en el taller’ 18th c. Convento de Santa Ines, Bogota. Photo: ARCA.
I add subtitles to images in my notes to remember which is which. This one is, “Get that baby off that bench!” But, we are back to the long and narrow staked bench. Demerits for the Baby Jesus on the bench (with chisel), merits for using a basket for tool storage.
‘San Jose carpintero’ 18th c.(?). Anon. Museo de Arte Religioso, Duitama.
Chisels in a rack on the wall, squares, planes, mallet, and saw on the floor. Dividers and adze on the bench. Bench more than a bit too high for its legs. Wait! What is that NOTCH on the front edge of the benchtop? I can’t repeat the exclamatory phrase Chris used when I sent this image to him. I believe this bench joins the Roman Saalburg workbenches in Workbench Mystery No. 326 (read that post here).
The Colombia gallery has two more benches and a vista.
Ecuador
‘Hogar de Nazaret’ 2nd half of 17th c. Isabel de Santiago (1660?-1714). Museo Jijon Caamano, Quito.
Isabel de Santiago was the daughter of a well-known painter. Using her will, and other documentation, it was determined she had painted several paintings attributed to her father. Of course, the re-attribution occurred a few centuries after she died.
Joseph is about to strike a chisel with his mallet. An angel with dividers in one hand and a square in the other works alongside Joseph. The bench is similar to others earlier in the post with the addition of a cat and dog.
‘Teller de San Jose’ 18th c. Miguel de Samaniego (1767-1824). Museo del Banco Central de Ecuador, Quito. Photo: ARCO.
I had almost given up on finding a clear and uncropped image of this painting.* The bench has a face vise with hurricane nuts. There is a tool rack on the wall and minimal tossing of tools to the ground. The painter, Miguel de Samaniego, a mestizo, is considered one of the premier painters in Ecuador’s colonial era. He clearly had a sense of humor.
He gave Joseph a plethora of shop angels: naked angels are ripping, but who is supporting the other end of the wood? Joseph’s leg? The clean-up crew is busy. The chickens are being fed. Over at the soup pot, one angel blows air to stoke the fire while another suffers from smoke inhalation. And under the bench we have a spoon carver.
‘Taller de Nazaret’ 18th c. Anon. Convento de San Francisco, Quito. Photo: ARCO.
A staked bench with no face vise. Just as Joseph is about to bring his adze down, his helper angel puts finger to lips in the international sign of “Shhh” and points to the sleeping Jesus.
In the Ecuador gallery there is another painting by Isabel de Santiago (Joseph and bench are in the background), from the coastal city of Guayaquil a painting of Joseph with his tools and two vistas.
*A big thank you to Jaime H. Borja Gomez and his ARCA project. I was able to find missing information and better photos of previously found paintings, and many more images I would not have otherwise found.
I hope to have the next post up in a few days and it will cover Peru, Bolivia, Paraguay and Argentina.
The deluxe edition of “
