Note: This entry has been updated to fix an embarrassing geometry mistake. The repaired paragraphs are in italics.
Wedges for stick chairs must absorb a lot of shock so they don’t snap when you install them. So I steer clear of weak (sycamore) or brittle (ebony) woods.
Most of my wedges are oak or ash, species that are plentiful and inexpensive. I don’t think I’ve ever snapped an oak or ash wedge, even when I’ve struck them at odd angles. I have used walnut and cherry wedges at the request of customers. They work, but you have to be deliberate when hammering them in because they will snap.
The grain in a wedge should run along its length, from its thin tip to its fat end. For chairs, I use wedges that are 1-1/2″ long. The fat end is between 1/8″ and 1/4″ thick. The tip comes to a sharp point. If I need a blunt tip for some reason (say the tenon is loose and shallow), I’ll snip off the pointiness.
The angle of the wedges I use is usually somewhere between 4° and 10°. The shallower angles are easier to hammer in, but the wedge is more likely to crack. A wedge with a larger included angle can cause the wedge to bounce out of the tenon when you hammer it in. The solution is either to hit the wedge harder until the wedge hopefully grabs, or switch to a wedge with a smaller included angle.
Wedges with included angles smaller than 4° can work, but the wedge is even more likely to snap off when struck.
Wedges With & Without a Sled
You can make wedges without a jig on the band saw by using the saw’s miter gauge. Crosscut a 5/8″ x 1-1/2″-long chYou can make wedges without a jig on the band saw by using the saw’s miter gauge. Crosscut a 5/8″ x 1-1/2″-long chunk off a board that is about 6″ wide. Set the saw’s miter gauge to cut on-half of the angle you desire (i.e. 5° off 90° for a 10° wedge). Put the chunk on the miter gauge and cut off a thin sliver. Flip the chunk over – end grain-for-end grain. Slide the chunk toward the blade and make another cut.
You will quickly figure out where to place the chunk so that you make a perfect wedge. You can make wedges with thin points and blunt points.
Keep flipping the chunk over and over. Make wedges until your chunk is so small that it feels dangerous to make the cut while so close to the saw’s blade.
You can also make a dedicated wedge jig for the band saw’s miter slot that has zero clearance to the blade. This jig is shown above. It is permanently set at 5° off 90° and makes it easy to position the chunk of wood and slice a perfect 10° wedge.
The disadvantage to both of these miter-gauge methods is also its advantage. The technique makes it easy to make different wedges. By moving the chunk of wood left or right on the miter gauge, you can make wedges that are fatter or skinnier.
People need food and stick chairs need wedges. They say that there are as many recipes for Spaghetti alla Carbonara as there are Italian housewives. I say there are at least three good ways to make wedges. None of them unfortunately include either pancetta nor Pecorino Romano, but you can’t really expect that from wood. In a mini series of three blogposts, we (Chris, Rudy and me) will share each our way of making them.
To make wedges with a band saw, you need the following:
A randomly sized scrap block of wood (in this case some 24mm Birch ply). Another scrap block of wood with the grain going more or less perpendicular to the long sides. The latter is important, as a wedge with cross grain will be hammered into mush by the first whack from the lump hammer. You also need a knife. And a pencil. And, of course, a band saw. Duh.
The largest block of wood is for the jig. Start by drilling a hole in it. You’ll use it to push and pull the block when you’re sawing out the wedges. It’s not necessary, but unless you’ve got sticky fingers (I don’t wanna know why!) by default, it makes things both easier and safer.
With the hole drilled, it’s time to mark out the size of a wedge onto the jig. But first, make sure that the scrap wood you’re using for the wedges is the size that you want it to be. Its thickness needs to be slightly more (1/16″ is enough) than the diameter of the mortise. So if your mortise is 5/8″, I’d aim for a wedge that is just a tiny bit wider. That way the wedge won’t leave a gap. Second, the block needs to be as wide as you want the length of your wedges to be. When wedging chair legs, I keep the wedges at around 1-1/4″. When I’m wedging short sticks for the arm, I usually end up at around 1″ length. You’ll figure it out.
Use the wedge block itself to mark out a wedge on the jig, by skewing it a bit in over the edge and drawing along its edges.
I usually make my wedges around 1/4″ thick at the top.
With the wedge shape drawn up, cut the notch out. Be accurate. If you make a wonky notch, you will have wonky wedges.
Use the fence to position the jig block toward the band saw blade. You’ll slide the jig back and forth between the fence and the blade so it needs to runs freely, but as close to the blade as you get it. Set the blade guide as low as possible to ensure precise cutting.
Start the band saw. Push the wedge block into the notch as shown above and push forward toward the blade. Push all the way through and pull back. You’ll soon find out that if you do this carefully, the wedge will be neatly pushed out to the right side of the blade when you pull the jig back – getting you ready for the next cut. Flip the wedge block over and you will square it off when cutting the next wedge. Pull back, flip again and on you go. You are now a Human Wedge Making Factory™. Be sure to make a bunch while you’re at it!
Finally, before using the wedges, I like to sort out the best ones. Which are the ones with the straightest grain and the most consistent shape. This is also where the knife comes in. To make it easier to hammer the wedges in, I taper them a bit with my knife. That way the wedges won’t bruise the edges of the mortise and they’ll enter the kerf easier.
I posted a photo on Instagram of our breakfast nook and got a lot of questions about the table and chairs shown.
The chair on the right is from “The Anarchist’s Design Book,” and the chair on the left is a prototype lowback I built for “The Stick Chair Book” (out in October). The gateleg breakfast table, however, hasn’t been in any book or magazine.
I have uploaded a drawing of it to the SketchUp Warehouse. You can download it for free. The model is accurate, except I didn’t draw in the bevel on the underside of the top. (The bevel is 1” x 1/4”.)
The table is simply made. The legs are joined to the aprons with mortise-and-tenon joinery. The folding top is attached to the stationary top with butt hinges. And the gateleg is attached to the table’s base with butt hinges as well. The table base is attached to the wall with a French cleat. Then I screwed through the cleats to secure the whole thing – it’s more like a built-in than a piece of freestanding furniture.
The whole thing is made from soft maple and finished with the linseed oil and wax finish that my daughter Katherine makes. You can learn to cook it yourself here.
Lucy and I eat breakfast together at this table every morning and watch the sun come up over the buildings in downtown Covington. And when we have a dance party in the kitchen (it has happened) we fold the table against the wall.
— Christopher Schwarz
Another beautiful morning in our neighborhood in Covington.
A linseed oil and wax finish has a consistency like peanut butter and is easy to apply.
My daughter Katherine has been making a linseed oil and beeswax finish as fast as she possibly can for the last few weeks. And she has been selling out within minutes of posting the jars for sale. As always, I am happy to share any recipes I can so you can make this at home. It’s not difficult. This finish was developed with some advice from Jeff Stafford, a woodworker and finisher in Indianapolis. The following is an excerpt from my forthcoming “The Stick Chair Book,” which will be released this fall.
My favorite clear finish for chairs is a combination of linseed oil, beeswax and a little bit of citrus solvent. It is easy to apply, safe and is a lustrous finish that does not make a film barrier between you and the chair. It is easily renewed or repaired by adding more finish. This finish works for woods of all colors – from maple to walnut. It will add a yellow/orange cast to light-colored woods. So if you want a whiter finish, use soap instead.
You can buy a linseed oil and wax finish from many suppliers. Some of them are reasonably priced; others are extraordinarily expensive. I make my own because it’s easy and cheap, and because I am in control of the entire process.
I buy beeswax from Bulk Apothecary, which sells raw ingredients for people who make personal-care products. A pound of beeswax pellets costs anywhere from $5 to $10, depending on how much you order. A pound of beeswax pellets is about four cups by volume.
You can also get it from beekeepers, which is where I got mine for many years. The upside: it’s usually inexpensive or free. The downside: you need to refine it to get the insect parts out.
The second ingredient is raw linseed oil – not the commercial boiled linseed oil (BLO) at hardware stores. BLO has toxic metallic driers and is not what you want for this recipe. Raw linseed oil is also available from most hardware stores, but sometimes you have to ask them to order it for you. I pay about $10 for 32 ounces (four cups by volume).
People will tell you that raw linseed oil never dries. They are misinformed. Linseed is a drying oil. It takes some time for it to fully cure, but if you apply it correctly you can sit in your chair after a couple hours of applying this finish.
The third ingredient is just a bit of citrus solvent (limonene). The solvent loosens the mixture so it is more of a soft wax (like a lightweight peanut butter) and not a bar of soap. You can buy limonene from a variety of sellers and pay anywhere from $1 per ounce to $13 an ounce. I usually pay about $21 for 16 ounces (32 tablespoons). In total, a batch of this finish costs about $7 to $20 to make and will finish more than 10 chairs.
Linseed Oil & Wax Finish Recipe
2 cups (16 ounces by volume) of raw linseed oil
3/4 cup beeswax
2 tablespoons limonene
I make this finish in a metal quart paint can from the hardware store. Place the metal can on a hotplate, fill the can with the raw linseed oil and turn on the hotplate to between low and medium. Monitor the temperature with a cooking thermometer. Beeswax melts at 151° (F). As soon as the temperature of the oil reaches 151°, pour the beeswax pellets and limonene into the oil. Stir with a stick until the beeswax melts (it takes less than a minute). Turn off the hotplate and remove the mixture from heat.
Allow it to cool. It will become a paste after about an hour of cooling. Seal. You can use it immediately or keep it indefinitely.
NONE SHALL PASS: The notebook where I recorded what I learned at The Windsor Institute. It is off-limits for my work today.
Editor’s note: The following is a short excerpt from “The Stick Chair Book,” which will be released this fall. Among all the how-to chapters in my books, I always try to add some chapters that add a psychological or historical dimension to the Part-A-into-Slot-B stuff. This is one of those chapters.
— Christopher Schwarz
With all the woodworking information available for free these days, it seems unlikely that there are still trade secrets amongst us.
But during 15 years of working with professional woodworkers to get their work published in a magazine, I had a lot of conversations that went like this:
“What kind of dye is that?” I’d ask.
“Red.”
“What brand? And what is the name of the color?” I’d ask.
“Can’t say.”
There were also many techniques that were off-limits. The woodworker would say something like: “This is how I teach it, but it is not how I do it.”
These encounters troubled me. I thought all the secrecy stuff had died off with the European guilds. But apparently, I was wrong. In many ways, I sympathized with the professional. He or she was fighting a horde of amateurs who were willing to undercut the prices of the pros. Why should a professional offer aid or comfort to this amateur enemy?
On the other hand, as woodworker W. Patrick Edwards says, “To die with a secret is a sin.” How will the craft progress if we don’t share what we know?
As I plunged deep into chairmaking in the early 2000s, I found myself stymied by some operations relating to compound geometry. The techniques published in the books seemed entirely too awkward compared to what I knew about pre-industrial woodworking. There had to be a simpler way to do these difficult operations.
I took some chairmaking classes. These helped, but I felt like either:
The teacher was also finding his way in the dark.
They didn’t really want to tell me how they did it.
In 2010, I took a Windsor chairmaking course with Mike Dunbar at The Windsor Institute, along with my father and John Hoffman, my business partner. Dunbar, now retired from the school, had built a chairmakers’ terrarium. You started with the class on making a sack-back chair. Then you moved on to other chair forms. If you wanted to make chairs for a living, you could receive training on business, sales and marketing from Mike’s spouse, Susanna. Plus, the Dunbars, their employees and affiliates supplied students with tools, patterns and wood for amateur and professional chairmakers.
Sack Back in Progress: My father (left) sights John Hoffman as he drills the initial mortise for a leg in a sack-back chair at The Windsor Institute.
It was an impressive operation. Mike and his assistants were there at every step to help you move forward on your chair. The lectures were funny. The workshop itself was gorgeous.
There was one problem, however. The class materials. At the top of the handouts for the class was this warning:
Our students are authorized to use these materials for the making of chairs for personal use and for the making of chairs for sale. We do not authorize the dissemination, reproduction, or publication of these materials in any form and strictly prohibit the use of the materials in the teaching of chairmaking to others.
Again, I felt that same old conflict. There is the urge to protect what you know. But that same urge has caused a lot of knowledge to be stockpiled in the cemeteries.
During my week at The Windsor Institute, I filled a red notebook with all the details of constructing a sack-back chair. I also kept all the handouts from the class in a green folder – both now in my bookcase.
However, I never consult them. I’m almost afraid to read them because they might give me some ideas for making chairs that I am not allowed to pass on to others.
OK, wait a minute. I’ll be right back.
Good news, everyone. I went through the class materials and notes, and I didn’t find anything that was universally mind-blowing. Most of the juicy bits in my notes related to how to build that specific sack-back chair. Whew. I’m glad I don’t build sack backs.
Giving away knowledge has always been a part of my personality. I don’t like secrets. While it would be easy to assign that trait to my time as a newspaper journalist, I know it goes back much further. In fact, I remember the moment I became this way.
In 1977 I was in fourth grade at the local Lutheran school. That year, some of the kids in the higher grades were permitted to dissect sharks for biology class. So, one day when we were called for an assembly in the school’s common area, I hoped (against hope) we were going to see some shark guts or something cool.
Instead, there was some old dude standing in the center of the room, holding a regular piece of paper. We all sat down on the carpet around him, legs crossed. Waiting for the boring session about a dull piece of paper to begin.
He began.
“Let’s say we live in a world where ‘corners’ are the most valuable thing in the whole world. Can you imagine that?”
“Yeah, but I can also imagine some crazy dissected shark fetuses.”
“How many corners does this sheet of paper have? Yes? You? Why yes, you are correct! This sheet of paper has four corners!”
“You know what has more corners? Shark teeth. Rows and rows of flesh-ripping corners.”
“Now, what if a friend of yours came up to you and was really, really sad. Sad that she didn’t have a single corner in the whole world.”
“So, my friend is a circle?”
“What would you do? You don’t want to give up one of your corners. Because then you’d have fewer corners. But you feel really bad for your friend. And so, you decide to give her one of your corners.”
Then the guy holds up the sheet of paper. He rips off one of the corners and gives it to a kid in the front row. Suddenly I’m transfixed.
“Oh look, I gave up one of my precious corners. But now I have five corners instead of four. That’s strange, don’t you think?
“Then, another friend asks for a corner because he has none.
“Another one? How can I lose yet another corner?
“But I decide again to give up one of my precious corners.”
Rip. He hands a corner of paper to me.
“And look. Now I have six corners instead of five!”
The guy continues to rip corners off the sheet of paper and hand them out, increasing the number of corners with every rip.
No one had ever explained generosity to me in those terms before. And though I was only 9 years old (and I still haven’t seen a dissected shark), I was a different person from that day forward. Giving stuff away – money, time, possessions, corners, knowledge – always results in getting something greater back in return. The more I give away, the more I receive.
To this day, however, I sympathize with people who hoard their knowledge out of caution or fear. When you are in a dying profession such as woodworking, giving up your hard-won know-how seems like suicide.
But here’s what I’ve found. If the stuff you know is really good – truly excellent – you could end up like Garrett Hack, Christian Becksvoort or David Charlesworth. Amateurs and professionals will pay to learn what you know through classes. Publishers will pay for you to write it down. You might have a tip or trick named after you.
Or you can remain that bitter man in his shop up on the hill. Perhaps you know how to make buttons for attaching tables to their tabletops in one amazing swish on the table saw. But you aren’t performing that trick for just anybody.
It’s a great trick. One that could change the way everyone works in their shop in the entire world. Right? There’s only one way to find out.
***
The following chapters detail how I build stick chairs. I’ve tried to include every “corner” that I’ve acquired since I first started building these chairs. Also, I’ve tried to give credit to the people who taught me the trick or the operation.
I’m sure I’ve forgotten a few good tricks and the names of some chairmaking friends who have shared their knowledge along the way. If so, I apologize.
My hope is that you will refine these operations and make them simpler, easier and foolproof. And when someone asks you how you make your sticks or your arms or your legs, you’ll be willing to rip off one of your own corners and give it away.
