Biomechanics – Chopping Wood, 2019

Actually ‘splitting wood’ more accurately describes what I do each winter in order to maintain a two year supply of cured firewood for my woodstove.  [All photos copyright symbol Max Vollmer,  Click on any photo to enlarge.  ]

Red oak (Quercus rubra)

A year ago I felled a red oak tree on my property that had succumbed to  a pest locally referred to as the ‘green ash borer.’  The base of the tree was a little over 24 inches in diameter and I cut the bolts (log sections) into approx. 24 inch lengths to fit my cast iron, airtight stove from Ireland.  I let these bolts sit all summer to begin to dry and then in the Fall I split them into sections left to dry another year.  I fell trees and split firewood when the days are cold to avoid breaking a sweat.  Temperatures in the low to mid-40’s Fahrenheit are perfect for splitting, while temperatures in the mid-30’s are better for felling and bucking.

Split red oak

I’ve been splitting firewood since I was 11 or 12 years old.  As a kid I used a Plumb ax to split wood for the family fireplace.  For the last 40 years I’ve been using a maul which is much more efficient!  Currently I am using an 8 lb. maul which is needed for these large oak rounds.  When I bought my current property it came with a gas-powered log splitter that I used for one season.  It was fast, but I sold it because I prefer to split the wood by hand.  It’s naturally much harder work by hand, but it is part of what keeps me in shape at 73.  Through the years of using a heavy maul,  I’ve learned how to put biomechanics to work for me.  I’ve perfected something like a full overhead, figure-8 swing that employs gravity, momentum, a pendulum motion, and centripetal force to do the work.  My arms and arm muscles don’t really do the work of splitting, so much as they direct the mechanical motion and application of force (mass x acceleration = force) that does.

Wall Cabinet – Oak, Cherry, Elm and Maple

I made this small, wall mounted cabinet to hold my layout tools for measuring and marking.  It puts them within easy reach and keeps them organized.  I used some off-cuts of red oak, black cherry, American elm, and sugar maple that were too good to throw away.  And I used some of the same tools that are now housed in the cabinet to make it.  [All photos copyright symbol Max Vollmer, Click on any photo to enlarge]

Wall cabinet. [Click on any photo to enlarge]
I’m going to illustrate the step-by-step process I use for hand cut dovetails, both the through dovetails on the case and the half-blind dovetails on the drawers.

Step one:  having determined the dimensions for the cabinet and cut the component pieces to size, I started the through dovetails for the case by marking the length for the tails based on the thickness of the board to which they will be joined, using an adjustable marking gauge made by Veritas Tools in Canada.

Marking the length of the tails.

Having decided on my dovetail spacing, I then marked the tails with a brass dovetail guide made by an Englishman, Richard Kell, many years ago.

Marking the tails.

The next two steps were to cut alongside the marked tails and then chop out the waste between them.

Using a chisel to chop out the waste between the dovetails.

To align the dovetails with matching pins, I clamped the board with the finished tails in my bench vise and lined up the board that will have pins and marked their location.  With the spacing marked in pencil, I used a marking knife to inscribe the outlines of the waste between pins.  I go to all this trouble to get the narrowest pins and finest fit.  There are always slight variations in hand cut dovetails, unlike those made with a router and jig.  It is not possible to get the very small pins you see in fine, antique furniture with a router and I want my furniture to reflect the skill required for hand work.

Alignment for marking  pin spacing.
Pencil marks for spacing and marking waste between pins with a marking knife.

Next, I fully outline the pins with a pencil to guide my cuts.  This is slow work but yields good results.

Outlining pins.

Since I planned to have a recessed back panel for the wall cabinet, after cutting the tails and pins for all four of the case frame pieces, I took this opportunity to cut the stopped rabbets around the back edges of the case pieces as well.  See Below.

Stopped rabbet for recessed back panel.

The six drawers, with American elm sides and Black cherry drawer fronts, have through dovetails on the back corners and “half-blind” dovetails on the front corners.  “Half-blind” means that the tails do not go all the way through the adjoining boards so that they do not show on the face.  My technique for the half-blind dovetails was basically the same as that for through dovetails.  See below.

Drawer side and back with rabbets cut for drawer bottom.
Elm side with tails fits into cherry front with pins to create the half-blind dovetails.

All sides, backs, and front pieces for the six drawers.  Ready for assembly.
Dry fit through dovetails at the rear and half-blind at the front of the drawer.

After cutting the 3/16″ oak plywood for the drawer bottoms, I cut and shaped a piece of Sugar maple with the table saw and a router to be cut into individual lengths for drawer pulls.  Then I cut stopped dadoes on the outside faces of the drawer sides before final assembly, and made and attached matching wood drawer guides on the inside faces of the case pieces .

Assembled drawers.  Drawer sides have stopped dadoes cut on the outside face to match up with drawer guides mounted on the inside faces of the case work.
Case sides and center section with guides for drawers.

What remained was assembly and finishing with clear/natural Watco Danish Oil.

Case sides and center section.
Case.
Assembled.
Finished.

To hang the wall cabinet, I used a piece of oak with an angle cut mounted to the back of the case that mates with another oak piece, with the complimentary angle cut, that is mounted to the wall.  In this way the cabinet can be hung and removed as needed.

The back of the case with a cross piece that has an angle cut on its bottom edge to mate up with a complimentary piece mounted on the wall that allows me to hang the cabinet.

 

 

Tall Oak Bookcase

I designed my tall bookcase with a small footprint to hold a quantity of books without occupying a lot of floor space.  The case is just under 83″ tall, but is only 31″ wide.  No one wants a bookcase toppling over on them, so I designed the lower cabinet section and base to project forward, thereby  bracing the upper portion.  The sides of the case are primarily made from two full length, 14″ wide, clear, 1″ thick, red oak boards . . . too nice to be cut down.  I started with a simple but scaled drawing to guide my work.  I worked out the details and made separate drawings as I went along.  [All photos copyright symbol Max Vollmer,  Click on any photo to enlarge]

Drawing for bookcase. [Click on any photo to enlarge]
Because the wide oak boards were very slightly cupped to begin with and would have a tendency to do so with changes in ambient humidity, I decided to restrain that tendency with a 14″ wide solid top that is attached to the sides with dovetails (see photos below).  To create the basic rectangle that makes up the case, I also cut dovetails into the bottom edges to accommodate two small cross pieces.  At this early stage, I cut dadoes for the shelves and for the oak plywood back to come.

Dovetails at top of case.
Solid oak, 1″ thick top.

Having cut tongues on the individual 14″ wide, 1″ thick shelf boards, including the extra deep shelf that doubles as the top for the lower cabinet, so that they would slide into the dadoes on the sides, I was faced with the initial assembly of the long case.  As you can see, I set the two sides on edge on two sawhorses, then affixed the solid top and two bottom cross pieces, using four very long pipe clamps to hold everything in place while the glue dried.  [Aside: an option would have been to join the shelves to the case sides with sliding dovetails, but I don’t have a shaper or router table so I opted for saving time.]

Shelves.
Shelf/lower cabinet top.
Sides spaced and braced.
Glued and clamped.

With the shelves glued in place, the basic case took shape.  The shelf spacing is graduated from bottom to top:  approx. 13, 12, 11, and 10 inches respectively.  The dovetails joining the solid top to the sides can be seen in the photo below.

Basic case.

I made and attached the trim pieces at the top of the case and installed the oak plywood back.  The back provides rigidity (i.e. 90 degree corners) for the whole case.  I also applied trim pieces to both front edges of the upper case to hide the shelf dadoes and to generally improve the overall appearance.

Custom made oak trim.

To finish off the raw bottom edges of the sides and to provide some of the stability envisioned in the original design, I cut long grooves, technically “stopped dadoes,”  into two pieces of  2″ thick oak to make what look like “shoes” to cover the “feet” of the cabinet.  I then applied a face frame for the lower cabinet section.

“Shoes.”

Face frame in place.
Detail showing the face frame aligned with the “shoes.”

For the cabinet doors on the lower section, I made panels out of a streaked and water stained piece of red or black oak that I rescued 40 years ago from the mud of John Root’s sawmill yard in Fishersville, VA, where it had been driven over multiple times by a forklift.  It had “character” and had been hanging out in my wood stash all these years just waiting for the right application.

Frames and panels with mortise and tenon joinery.

The doors, with brass pulls, were installed with brass leaf hinges.  An adjustable  shelf was added in the lower cabinet section.  All that remained then was to finish the bookcase with one coat of Minwax (natural) for a sealer and two coats of Watco Danish Oil (clear).

West Greenland Kayak Paddle

I made this traditional West Greenland paddle for my son, a sea kayaker extraordinaire, out of a rough sawn sassafras 2″ x 4″.  This one is actually called a “storm” paddle because, at roughly 70″ (178 cm) long, it is shorter overall and has a shorter “loom” (the hand grip) than is true for a full size West Greenland paddle at approx. 8′ (244 cm).  While the Inuit made their paddles out of whatever wood drifted onshore, I chose sassafras, a minor North American hardwood, because it is relatively strong, light, and holds up well in fresh and salt water. [All photos copyright symbol Max Vollmer,  Click on any photo to enlarge]

West Greenland storm paddle.  [Click on any photo to enlarge]

The simple appearance of the paddle belies the challenge involved in making one.  My first steps were to mark out centerlines on both the thick and thin dimensions of the 2″ x 4″, as well as the location and shape of the loom.  These lines guided me in creating the tapers in both width and thickness of the paddle blades.

Paddle layout.

Next, I used my bandsaw to rough out the loom and then shaped the blades with a drawknife and spokeshave, finishing up with a belt sander.

Loom.
Tapering the blade with a drawknife.  Note the Emmert patternmaker’s vise that holds the wood securely and in the proper orientation
Refining the taper with a spokeshave.
Note the centerlines which guided me in keeping the blade cross-section symetrical.

Refining the taper and smoothing the blade with a beltsander.

Holding the paddle “blank” in the grip of my 1930’s vintage Emmert patternmaker’s vise made this shaping possible.   The Emmert has been known to generations of patternmakers as “The Iron Hand” for its ability to twist, rotate and lock its jaws in an infinite number of positions.

The loom is shaped so that the paddler’s thumbs can grip against “shoulders” cut at an approximate 45 degree angle on one side, while the fingers wrap around a splayed  grip on the other side.  The cross sectional dimension of the loom is sized to the individual kayaker’s hands, in this case to Karl’s hands.  See the photo below.

The loom.

I finished the paddle with two coats of 100% Tung oil.  Tung oil has no VOC (volatile organic compounds),  is slow drying between coats, but offers good protection for the wood in water and can be renewed as needed.

Hand Forged Hinges & Hasp

In 2006, I built a carved, aromatic cedar lined chest in Joseph, OR, that was inspired by an original “harinero” (flour storage chest) from northern New Mexico dating from the late 17th – early 18th century.  My chest, like the original, is constructed with Ponderosa pine and is scaled and proportioned using the historic Spanish “vara” system of measurement (one vara = 33 1/3 inches).  At the time I did not have my blacksmithing equipment set up so the chest went without hardware until 2018.  Here’s a photo of the chest without hinges and a hasp.  (All photos copyright symbol Max Vollmer,  Click on any Photo to Enlarge it.)

New Mexico style chest.

I made scale drawings of the strap hinges and hasp I wanted for the chest in the style of 17th~18th century, northern New Mexico.  I used mild steel to forge the parts and a hack saw to make cuts for the barrels/knuckles of the hinges.  The next four photos show intermediate steps in the forging of the scrolls for the two-part hinges and hasp.

Hot forged scroll work on the anvil.
Forging of scroll work.
Forging scroll work.
Hinge and hasp parts.

The next photo shows the design for the latch part of the hasp marked on the steel with magic marker so that I could rough cut and file that part before going to the forge to finish it.

Hasp

After shaping all the individual parts, I cut pieces of steel rod for the pintles (the pins) around which the the gudgeons (barrels or knuckles) of the hinge parts rotate.  The pins were held in the jaws of the post vise so that the gudgeons (yellow-hot at 1800 degrees F) of the hinge, straight from the forge, could be hammered/forged around the pins.  The next picture shows the hinge and hasp parts joined together, plus a 3″ square, hammer-textured plate and “staple” (U-shaped) to which the latch part of the hasp would attach.

Hinge and hasp parts.

The next photo shows the assembly of the 3″ square plate and staple to complete the second part of the hasp.  To do that, I drilled two holes in the 3″ square plate to match the U-shaped staple “legs” . . .  then in very rapid succession I heated the staple legs to yellow-hot in the forge, and holding the staple with tongs I cooled all but the tips in the slack tub, quickly clamped the staple  in the post vise with the hot tips pointed up, fit the plate (with drilled holes) over the staple tips, and upset (hammered) the tips so that they mushroomed down over the back of the plate into shallow recesses I had pre-drilled with an oversize drill bit.

Staple tips “upset” to anchor the staple into the plate.  The assembly is shown clamped in the post vise, bottom side up.

Here is what that part looks like sitting right side up on the anvil.

Staple and plate assembly.

All that remained was to forge some nails, drill the holes for the nails in the hinges and hasp, heat the parts to a black heat in the forge and coat the parts with Johnson’s Floor Wax while the steel is still hot.  This leaves a nice, semi-gloss surface finish that offers some protection from corrosion.  Obviously, the next step was to mount the hardware on my chest.  The next four photos show the mounted hinges and hasp on my chest as it sits in my living room.

Hinges and hasp attached to chest with clinched, hand forged nails.
Finished chest with hardware.
Hasp.
Closeup.