My Shop

Corazon

I am feeling nostalgic this morning after contemplating boat building. Last year at this time I was immersed in one of my most rewarding building events as I constructed a wood-strip kayak for my wife. Built from a plan, the kayak’s prescribed shape was personalized with our choice of woods and inlays. Redwood, western red cedar, basswood, walnut, mahogany, and maple, worked together to uniquely define the character of her kayak “Corazon” - one connected to the southwest with native American motifs of Kokopeli, Zia sun, pine trees and diamonds.

Wood is an incredible medium. Each year a new layer of carbon (and life) stored as cellulose and lignin, is deposited into the trunk. This resulting growth ring becomes a sample of atmospheric carbon, processed through photosynthesis and transported to the growing meristem, ending up in the walls of wood cells. But this process also records the conditions conducive or in opposition to growth. Limited moisture or poor temperatures stifles growth and the resulting ring of wood is narrow or even absent. Year after year this process continues; the meristem continually increasing in circumference as the trunk expands. Wood serves two important purposes for the tree. Connecting the moisture laden soil to the transpiring leaves above, the dead hollow cells form a conduit of water refurbishing the leaf, thirsty from continual water loss through it pores in a quest to gain carbon for photosynthetic endeavors. The leaf struggles in this paradox of function meeting reality. It is a Catch 22 of the botanic world. Secondly, with no skeleton for support, the strong cell walls of the wood cells provide support for the tree – enough to span 400’ in the tallest of species, yet resilient enough to sway in winds or bend under the weight of heavy snows. But this is only part of the magnificence of wood. For each species is uniquely defined by color, fragrance and the physical properties of density, hardness, resilience, and durability. But I digress into the scientific and thus leave the human connection I so cherish. So let me take you, for a minute, into the boat building process.

Wood strip boat construction entails abutting then gluing long, thin cedar strips next to one another. Simple enough it seems, but the laws of physics challenge the builder. Wood strips, with right-angled edges, only fit together on flat surfaces. The curving form of the boat hull precludes such surfaces. Thus each strip edge must be beveled to fit the adjacent strip. I prefer to do this by with a small bronze apron plane, cradled neatly in my hand. I angle its flat sole on the edge of the cedar strip and shave off a thin curl of wood and move down the length of the strip continuously adjusting the bevel, repeating until the fit is satisfactory. In the process I cut through time, 10 years ago, perhaps 50, 100 or even more. The wood can’t speak of the time past, of the day in June when the cell deposited carbon into its cell wall, but yet it releases a fragrance that connects me to the wood in an elemental way. It is this connection through smell that awakens my mind and causes me to search for times past in which that fragrance permeated a memory.

Why woods possess a unique fragrance is mystery for me. I know the answer occurs from a sound physical basis, yet I care not to discover and I am not inclined to research the causality. A simple pleasure is manifest when released and this is enough for me. I wish only to participate in the experience not to analyze any further.

A magic – a mystic – exists in my woodshop due to this smell, uniquely western red cedar, oak, walnut or pine – and from that I connect to the medium in an intensely personal way. Today I sit in my shop, watching the sun’s rays enter through an ornate window on my front door. Weeks past I worked white oak forming precise tenons fitting snuggly into their respective mortises. But today the smell is absent. So I am called to remedy this oversight. I’m currently working on the rectilinear – Arts and Crafts style furniture – end tables to be precise. The simplicity of form and rigidity of function appeals to my simple side. Yet I long for curves of a boat hull. The three-dimensional form, in particular the bow and stern sweeping upward to the gunwales, inspires in me a creative endeavor; this twist and turn of wood that in the end functions to cut elegantly through water, embodies the marriage of form, function and beauty.

I find boat hulls magnificently attractive, their curves simply pleasurable to view. To think that I could create this form, then to realize it in practice was a life-changing event. I find great pleasure in building, then of course using a boat – not just the first time, but in all subsequent times. This experience transcends belief as I marvel in actually constructing the very object I paddle. I wonder why this thought so novel. Isn’t this the way it should be? Humans have for many centuries crafted boats. Now I am one of those builders of boats, connected to a distant past and I wonder if past builders also found similar pleasure and wonder when building boats. I hope so.

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New bent-shaft UPDATE

This paddle is an experiment in progress. I trimmed the blade and then decided to put a fiberglass sleeve on the shaft. I purchased the sleeve material from Soller Composites and placed a 30″ segment above the blade. Of course I did this after that portion of the shaft was rounded and before the grip was built. Western Red Cedar is a very soft wood and it dents easily; thus my reason for putting on the sleeve (I also have a desire to make a wood whitewater canoe paddle which needs reinforcing on the shaft, especially in the area where shaft meets gunwales).

I glued on 4 walnut pieces to the square shaft to make the grip, then shaped them similar to the grip found on a ZRE paddle I own. I sanded everything and coated with two coats of West epoxy 105/207 to fill the grain on the western red cedar. Instead of taking photos, I decided to make a couple of short videos of the grip and blade while I rotated the paddle so you can see the 3D shape.

The paddle currently weighs 20oz. After the epoxy cures for a while, I’ll sand it down and put a couple coats of varnish, so the weight may go up just a bit. I like the grip and shaft. However, the blade is not stiff enough at the edges (outside of the center support). I’ll write more after I give it a test in the water.

Posted in Canoe Paddle | 2 Comments

A New bent shaft paddle

I really like the looks of the Mitchell Leader Bent Shaft paddle. It has a wood grip and shaft and a carbon fiber blade. So I wondered if I could make something like this TWO YEARS AGO and made the shaft. I built the shaft and wood body of the blade and it sat until April 4 when I decided to work on it.

I constructed the shaft of two pieces of western red cedar around a 3/16″ thick ash strip. At the throat, I cut a the shaft at a 10 degree angle and attached two addition pieces of western red cedar to make the “wings” at the throat - ie the transition of shaft to blade.

shaft and throat

I rounded the shaft and throat area both in front and back (I should have kept the back flat!). I constructed a 3″ wide X 1/4″ thick center board and rounded the edges. I thought this would give needed support to the blade, though I’m not sure it is required. You can see this piece to the left on the photo above.

To make the blade, I drew out the blade shape on a piece of paper and taped it down to a flat surface, then covered this area with con-tact paper. I wetted out 2 sheets of carbon cloth on top of the contact paper, positioned my shaft, center board, filled that joint with epoxy putty, then put down two additional layers of carbon cloth on top and wetted them out.

blade construction with 4 layers of carbon cloth

I put a second coat of epoxy on top and let it dry overnight. The next morning, I lifted the paddle from the table, marked the blade outline, and cut to shape on a bandsaw. Here is where I found that I really needed to keep the back throat flat, so I ended up filling a the two cracks with epoxy/graphite mix. First impressions…it seems heavy - perhaps only one layer of carbon on each side? and no center reinforcement?

blade trimmed to size

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Projects in Progress

I have completed a Spring Run kayak (a Redfish Kayak design) for my wife. The blog for that build is at https://springrun.wordpress.com/

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