I
mentioned in my last post that you don't have to be interested in
making a ladderback chair to take notice of the tools we used at
Country Workshops, or to make use of green wood. For the woodworker
on a budget, wood from retail sources can be expensive. So, in many
cases, you might want to consider splitting logs into useable wood
and drying it yourself.
Just
as often as students ask me about tools, they ask me about sources of
wood. When you have very little money, or you're interested in using
the most local possible material, it makes sense to process your own
wood from trees that are getting cut down in your neighborhood.
Very
often, the trunks of trees will be cut up into short lengths where
they fall, and if you ask nicely, you can get a chunk or two for
little or nothing. Don't ask hard-working guys to deliver it, or even
load it into your car for you, and expect to not pay them! But in
many cases, a municipality or tree service finds that it costs money
to get rid of the wood from trees they cut down, so if you show up
willing to save them a little expense, we have a classic case of
mutual benefit without money changing hands.
A small black ash (10" diameter) that was leaning over the road on my property. |
Take
wood from the main stem only. Wood from branches is mostly reaction
wood, and isn't suitable for most woodworking. Wood in the main stem,
or trunk, tends to be straight grained and relatively easy to split
(avoid crotches and areas with lots of branches coming out, for the
same reason). Also, note that logs are HEAVY and wet ones are EVEN HEAVIER. Stick to small stuff when you begin. Either long and slender as in the example shown, or big diameter but short. I implore you to be safe out there, and the weight of green wood is no joke!
The
standard way to process tree trunks into useable lumber for the past
couple hundred years has been to send them to a sawmill. Before
powered sawmills existed, manual sawing of logs into boards coexisted
with splitting and hewing as ways to turn logs into workpieces. What
changed was technology and economics, not the physical properties of
wood. Hewing and splitting are still available to us. And splitting
is simple.
It's
simple, that is, with a couple of provisos: some species split better
than others, and you want nice straight grain with the fewest
possible knots. Everyone seems to agree that oak is the most reliable
wood for good splitting. I have had excellent luck with oak, ash,
walnut, and butternut. I have had no luck with apple, mixed luck with
hard and soft maple . . . you'll have to experiment. Drew Langsner
told me he has had very mixed luck with walnut, and that the ash
around his place doesn't split well radially. Some species of hickory
split beautifully, but pecan, which is in the same botanical family
as hickory, has been impossible for me to split. In my experience,
you can forget about American elm and hophornbeam. If you get the
wood for free, and you don't know, what's the loss? Give it a try,
and learn.
This black ash split so cleanly that the split face looks planed. Later that day, I ran it over an 8" jointer and it only took a single pass to get a flat face! |
All
you need to split wood is a wedge and some way to drive it through
the wood. The minimum practical toolkit, though, is what you see in
these photos: two iron splitting wedges, a plastic felling wedge, a 3-lb or so hammer,
and a hatchet. With careful shopping, you can get all these for about $50 - - you
don't need fancy ones. A hand-forged Swedish hatchet is really nice,
but you wouldn't want to waste it on rough work like this. ESPECIALLY since all the experts agree it's axe abuse to strike the poll (back) of an axe with a steel hammer.
Here's
the step-by-step:
Look
at the piece you're splitting. First split the piece in half. If any
small cracks are already starting, especially if they're radiating
out from the center of the log, you must split along them, or they'll
start opening up independently and throw your split off. Use one of
the splitting wedges, which are fairly blunt, to score a line where
you'd like the log to split. Don't try to actually split the log,
just make a line all the way across the face of the log. This is a
way to try to guide the split. Then place the hatchet carefully along
your scored line, centered on the log, and use the hammer to gently
tap it in. You must wear safety glasses whenever you're striking
metal with metal. And remember, the experts agree that striking an axe with a steel hammer is abusive. That's why we're using the cheapest hatchet we can find! If you have a big wooden mallet or deadblow hammer,
this is when to use it.
Notice how straight that split is! It followed the initial scoring perfectly. |
Once
you have the hatchet started in, you can enjoy mindlessly driving it
for a few swings of the hammer. You've done all you can to steer the
split, so now just swing that hammer and enjoy the feeling of the
wood as it splits. Hopefully, you'll see a crack develop along the
line you've scored. If it strays, there may be a knot you didn't
notice before.
Before
the hatchet head gets buried in the end of the log, you should see
the split open up along the sides of the log. Pick a side, and put
one of the splitting wedges in it.
A gentle tap to get it started,
then a couple more taps to release the hatchet from the end (set it
carefully aside) - - - drive that splitting wedge now! At this point,
the log's split shape has been determined. All you can do is leapfrog
the wedges along the length of the log,
perhaps using the hatchet to
cut any fibers that manage to hang on and stretch across the split.Here I'm using a plastic felling wedge as an experiment. It worked great! But you still need the iron wedges to do the scoring and really open that log up. |
Half
logs should be split into quarters, then into eighths if the log is
large enough. Usually you can only split a chunk of wood into
halves, though experts supposedly can do thirds. Get the wood into
roughly the shape you want to use it in: square bolts for legs and
frames, wide narrow planks for panels.
Coat the ends with latex paint
or diluted glue, put them somewhere out of direct sun with good air
circulation to let them start drying. After a few months, when it's
time to use them, bring them indoors to finish drying. If you can
help it, don't store whole logs - - - they're easier to split when
they're fresh, and there's less checking during drying it they're
already split into at least quarters. The wood you end up with is
cheap or free (except, of course, for your time and work), and you
only need very basic tools to get it. Split (a.k.a. “riven”) wood
has added advantages: it's stronger, it's easier to get quartersawn
pieces, and it's as local as you can get!
It
would fill a book to convey all the ways the wedges and hammer and
wood feel as you split, and all the nuances of technique that go into
doing this all safely, neatly, and with the least effort. And if I did, it probably wouldn't be as good as the books in which Drew Langsner covers this. In the end
it's impossible to write them all down: you just have to go do
it. You'll learn it quickly; I believe that people have been working
wood since before they were people, and basic processes like
splitting it are hard-wired into us. Once you've done one or two
splits successfully, you go into intense dialog with the wood, zoned
out from all else. For my mind, anyway, this is one of life's great
pleasures. At least it is when the wood is cooperating!
Inspiring! Can't wait until I come across a freshly felled tree.
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