Tavis Macintosh |
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This axe design combines elements of both weapons
and tools and typifies the kind of multipurpose item a traveler such as
a merchant might commission. While the blade shape and weight are suited
for use as a utilitarian tool, the slight extra length and one piece blade
and haft construction would more commonly be found in a weapon. In profile
it is mostly influenced by the Indian "Tabar", a late period-saddle
axe used throughout India and the middle east, although Tabars were most
often ornamented with engraving and inlay rather than a pattern welded blade.
Piercework in such an item would not have been unusual.
The steels I used in the axe are W2 and 203E. I commonly work with these
steels because of their strength and high contrast. Period blades would
be forged in a charcoal fire but this axe was forged in a gas forge because
of it's similarity in atmosphere and convenience. First the two steels were
cleaned of any surface oxidation by grinding the flats clean. I then stacked
three alternating layers, two outer layers of 1/2 inch thick W2 steel, and
one inner layer of 1/4 inch thick 203E. The length and width of the billet
varies according to the project. The billet is then heated, fluxed with
borax and brought to weld heat in the forge and welded solid. The billet
was then drawn out and successively folded (forge welding each fold solid)
until the desired pattern density was reached (in this case approximately
163 layers, or 4 triple welds.
Once the billet was finished I forged a bar out of the main mass for the
handle and forged the main mass itself into the head and blade(all one piece).
Once the axe was forged I heated it to a medium orange heat and bury it
in hardwood ash, this heating, and very slow cooling causes the crystalline
structure to grow large soft crystals (annealing) that may be cut with files,
chisels, or saws. After annealing the axe was ground and filed to shape,
the haft was drilled for the handle rivets, and the piercework was drilled
and sawn out with a jewelers saw. Finally, the axe was sanded to a four
hundred grit finish preparatory to hardening. To heat treat the axe I heated
it to its transition temperature (found by tapping with a magnet, when the
steel becomes non magnetic during heating it has reached its transition
temperature and is ready to quench) and quench in 350 degree Fahrenheit
quench oil (this is what is known as hardening). Period quench mediums vary
from plain water t~ saturated warm brine (the urine of a goat fed only ferns
is suggested by Theophilus in Divers Arts) to whale oil. During hardening
the steel becomes brittle and I must stress relieve it by heating to 400
degrees for a period of about an hour (this is tempering), generally period
blades were heated only for a few minutes to a higher temperature but holding
temperature gives a more complete stress relief. Once the axe was heat treated
I finished sanding it clean (400 grit) and etched it in weak ferric chloride
solution. Medieval blades were etched in vinegar, urine or weak acid,(even
brine will work).
After finishing the axe itself I cut out the hardwood handle slabs and brass
bolsters with a saw, drilled holes for the rivets and mounted the handle
to the haft of the axe. Once the parts all were assembled I shaped the handle
to fit the hand, sanded, then polished the brass after which I waxed the
wood with a little beeswax. the blade edge was then sharpened and oiled.