Create
Your Own Decorative Steel Stamps
by
Victoria Lansford
Victoria's
Original Stamped Step Bezel Project
This
project article was originally solicited by Art
Jewelry magazine in 2006 and published in May
2008, Volume 4, Issue 4. Due to the extreme changes
they made, much of the information published in the
magazine is confusing and false particularly concerning
tempering the finished stamps.* By agreement with
Art Jewelry, I retain copyright of my original
material and have uploaded it here to ensure the correct
information is available to everyone.
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The
possibilities for stamp making are endless. Some of
my favorite stamps are shallow curves of varying lengths.
Hardware stores are great places to find tools that
can leave unusual impressions. Nail sets (used to
hammer nails flush with molding) make great circle
stamps. Commercially available letter or designs stamps
can be altered to make them your own. Just remember
to anneal before you work on them and temper them
afterwards.
If
your design seems too complex, consider dividing it
into 2 or 3 stamps to be used together. Some of the
first stamps I made were 2 curves that combined to
form a crescent moon. Years later I discovered that
by turning one around and stamping a medium sized
nail set in the center, I had created a stylized ancient
Egyptian eye, a repeating motif I've used on the front
of several amulets.
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Tools
& Supplies:
Allen wrenches or extra large nails
Steel bench block
Acetylene torch
Flex shaft
Separating or cut off disks
Mini muslin polishing wheels
Gray star polishing compound
Chasing hammer
Ball peen or conventional hammer
Bench vise
Course flat file
Inexpensive 1/2 round, round, flat, or triangular
needle files
Firebrick
1/4
cup of motor oil in a small metal can
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1
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[1]
Allen wrenches (hex keys) and large nails make great
inexpensive steel blanks for making your own stamps,
and they are available at any hardware store. While
nails work well, I prefer allen wrenches because they
are easy to hold while stamping, come in a wide range
of sizes, and their flat sides mean they require less
filing to create many types of shapes. It is necessary,
however, to cut off the bent ends first. The allen wrench
pictured in this project is 6mm. |
2
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[2-3]
Use a separating or cut off disk on the flex shaft to
carve a 2mm deep groove all the way around the allen
wrench just below the 90 degree bend [2]. Be sure to
wear safety goggles and a particle mask when using the
flex shaft. Holding the tool with tongs or cross tweezers,
anneal only at the groove until cherry red [3]. (It
is not necessary to heat the whole length of steel.)
Let the tool air cool by placing it on a bench block
or soldering brick. |
3
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[4]
Place the tool in a vise with only the groove and
short end sticking out, and whack the end several
times with a heavy hammer. This may take a few blows,
but the steel will give way where the groove has been
annealed and will fall off. File the broken end of
the tool flat. If you are using a large nail, file
the pointed end flat. With either tool, the end you
file flat will be the end you strike with the hammer
when stamping.
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4
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[5]
Holding the tool with tongs or cross tweezers, anneal
the other end and allow to air cool. (Annealing again
will make filing much easier!) Draw your design with
a permanent marker on the smooth end of the allen
wrench or the head of the nail. Use a course flat
file to taper the sides of the tool on the outside
lines or curves of your design. A sharp taper gives
a much clearer and crisper imprint of your design,
and also makes it much easier to see where the design
end makes contact with the metal you will be stamping.
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5 |
[6]
Use needle files to remove the metal around your design.
Even though you may have roughed out your outside lines
with the course file while tapering, always do the finer
filing on the inside curves and angles before creating
the final shapes on the outer edges. It is easier to
correct and make design changes by adjusting the outside
lines than the inside ones. If you cannot get into an
area with a needle file, use a rounded or pointed bur
on the flex shaft. Burs work well for spiral designs
or when carving out the negative spaces in letters of
the alphabet. Test your tool often on a sheet of scrap
copper. The line of your design should be crisp and
uniformly deep. If part of your design does not show
up, carefully file the end of the tool until your design
is flat again, then redefine and sharpen your edges. |
6 |
[7]
When you are satisfied with the shape of your stamp,
polish it using the flex shaft with a mini muslin wheel,
charged with gray star compound. There is no need to
use any sandpaper. Gray star will remove all the file
marks and take the steel to a high polish. |
7 |
[8]
To make your stamp last for more than three strikes
of the hammer, it is essential to temper it. Although
this may sound daunting, it is really very easy. Have
tongs or cross tweezers available. Lay the stamp on
a firebrick with the design end hanging off, and aim
the torch 1/4” above the tip of the stamp until
you see the metal turn “straw” or dark yellow.
Immediately drop the stamp into a small metal can of
motor oil to quench it. Be sure the can of oil is near
enough to drop the hot tool into but far enough away
from your torch not to catch fire. |
8 |
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If
heated correctly, the motor oil will sizzle and smoke
slightly on contact. Leave the stamp in the oil to cool.
When tempering, the stamp will heat up faster than you
might expect. If you see it turn blue (the next color
after straw), that’s fine. Go ahead and quench
it in the oil. If it turns red, let the stamp air cool
and try again before quenching. Once cool, remove the
stamp from the oil and clean with soap and water. The
stamp is now ready to use! |
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Your
stamps can be used to embellish any surface safe to
hammer, including flat sheet around a bezel setting.**
Solder on the bezel first, then stamp before setting
your stone. You can even create wonderful patterns for
bands and ring shanks, by stamping before bending and
disguising the seam in the same way as the bezel wire. |
*
I did not write the sidebar entitled "temper,
temper," and the information contained in it
is false. Tempering does not soften steel but rather
freezes it at a particular hardness. This is self
evident when testing a stamp after filing or grinding
the design. Continued stamping before tempering will
result in an increasingly less sharp impression because
the stamp is still relatively soft from annealing.
Tempering the stamp hardens it enough for use but
not so hard that it becomes brittle.
I
only temper these stamps once although the article
in Art Jewelry says to temper them a second time and
gives no explanation why.
**The
published article has changed this recommendation
in a way that can be quite confusing to the reader.
What I suggested was to solder the bezel to larger
sheet then stamp around this outside ledge on the
front. What they wrote sounds as if I'm suggesting
to solder on the bezel then stamp the back. While
that is possible with the right set up (An upside
down dapping punch held in a vise will serve as a
tiny steel plate.), it is infinitely easier to stamp
the back of the bezel before soldering the bezel to
the sheet.
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