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Birch-Bark Containers – FineWoodworking


Birch-Bark Containers - FineWoodworking

I first learned of these birch-bark containers through my Swedish friend Jögge Sundqvist. They’re made in many parts of the world, particularly Scandinavia and Russia. I made one in a class with Jarrod Dahl, then later visited the man who taught him, Swedish craftsman Ramon Persson. Some of the Swedish examples I’ve seen exhibit a wide range of joint configurations and extensive decoration, often including paint. The best inspiration for these today is the Russian maker Svetlana Koreneva (@koreneva_beresta).

Birch-Bark Containers - FineWoodworking

These containers have endless uses, and their construction is simple. The body of the canister is two layers of bark, one inside the other. The outside layer has tabs and slots for joinery, while the inside layer has no joinery. Once the bottom and lid are in place, two narrower bands wrap around the top and bottom ends, adding another layer of decoration and enhancing the structural integrity.

Tools and Materials

There’s little solid wood in these pieces, so the main thrust of this project is bark work. I get my bark in large sheets from the Bark Canoe Store (barkcanoe.com), but you can find other online sources as well.

The size of the bark you’re using dictates the maximum size of your container. Other than measuring the strip’s widths, there’s no math required. I eyeball as much as I can.

The show side is the inside of the bark, which ranges in color from yellow to orange. The white-and-black surface we use to identify birch doesn’t show in the finished work. When you’re cutting out the strips, keep in mind that the orientation of the bark in the finished piece is the same as it was in the tree, only inside out. The horizontal lenticels—those dark lines that wrap around the tree—wrap around the canister too.

The tooling used to make the canisters is minimal: a utility knife, sloyd knife, carving gouge, scissors, small handsaw, spokeshave, chisel, drill, and maybe some punches for decorating.

Prepping the bark

I cut the outer layer of bark with a utility knife and a straightedge. I examine the bark to avoid any large flaws like cracks or splits. Natural bumps won’t affect how the bark works, but I try to position things so these are not on the joints.

Birch-Bark Containers - FineWoodworking

On the strip’s outer surface I clean off all the loose bark. Some of it can be peeled off; I abrade away any remaining loose bark with a convex rasp to reduce the thickness and remove any bumps and lumps that would keep the two layers from lying tight to each other. I then thin the bark in a swath about 1-1/2 in. to 2 in. wide at each end of the outer layer to prepare for cutting the joints.

Birch-Bark Containers - FineWoodworking

 

Fingerish joints

 

Birch-Bark Containers - FineWoodworking

With a dull awl and a square, I score a line across the bark about 2 in. from one end. It’s just an impressed line I’m after, not a cut.

Birch-Bark Containers - FineWoodworking
You can think of this joinery a little bit like dovetails, but with tabs and slots instead of pins and tails. The pattern and spacing is whatever you want it to be. You scribe a shoulder, cut the tabs, use that pattern to mark the other end, and then cut the slots on the other end.

To make the slots, I start with a 3/4-in. chisel. I place it on the scored line and pierce the bark, pushing the chisel through it. The first cut is centered on the bark’s height and is followed by cuts right at the top and bottom edges that are only half the chisel’s width. Further cuts get spaced between these three.

Birch-Bark Containers - FineWoodworking
Tabs start with a straight cut. The first cut for each tab is made with a 3⁄4-in. chisel on the shoulder line, bevel toward the opening.

To finish these openings, I switch to a gouge. A deeply swept gouge is excellent for this work; it forms the full half-circle in one move. A less-curved gouge will work too; you just have to step over to finish the cuts.

Birch-Bark Containers - FineWoodworking
Make two or three rounded cuts. Working off the chisel cut, create the semicircle. The size of your gouge will determine if you can make the shape in two or three cuts. The slots at each edge can be half the pattern.
Birch-Bark Containers - FineWoodworking
Separate the tabs. Make two scissor cuts aimed at each chisel-cut end of the openings. Leave a shoulder left and right. This creates the tabs that connect the ends of the outer layer.

Next, I wrap the bark around itself to transfer the positions of the openings to the other end. After cutting those openings, I go back to the first set and cut just inside each opening to the end, leaving a long tab centered between the openings with a bit of a shoulder at the end. Some taper the width of those tabs to make them easier to insert when connecting the canister’s outer layer. I use a slight taper just at the end because of the optional, decorative hole I pierce in the outer layer. I want the tabs to show behind this hole.

Birch-Bark Containers - FineWoodworking

Thinning these tabs makes them flexible for fitting the joints together. I use a convex rasp or coarse file on the white side of the bark to abrade away a couple layers of the white bark depending on how thick the sheet of bark is. I sometimes fine-tune this thinning with a sloyd knife.

Birch-Bark Containers - FineWoodworking


Peter Follansbee is an unplugged woodworker in Kingston, Mass.

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