I knew someone was going to ask that question, so I had already
started calculating an answer.
I measured the result of the final wire. It was .10 mm in diameter ,
which comes out to roughly 38 gauge. ( I guessed at the gauge
earlier, just knew it was much smaller than 30 gauge on my measuring
device.) A 5 inch piece was .10 mm in diameter, and weighed .1
carat. A 50 inch piece would weigh 1 carat.
An ounce of gold weighs 28.349 grams or 141.74 carats.
So, if I had drawn out the whole ounce, I would have had 50 x 141 or
7050 inches or 587 feet. A mile is 5280 feet, so I would have drawn a
tenth of a mile for a whole ounce of gold, using the smallest hole in
the drawplate I have.
The gauge size is a logrithmic regression with the equation D
(diameter) = 3.6594 * e^(-.1162x) where e = 2.7183, and x is the
next gauge number. I started at gauge 8 to get the final numbers and
generate the equation.
I plotted this out in Excel (workbook attached if anyone is
interested) and to get ten more times the length (a mile), I would
have to use a gauge of 48 , or a diameter of .0312 mm.
A human hair is of the diameter .06 mm, so it would have to be half
the thickness of a human hair to reach a mile for an ounce of gold.
The below indicates it can be drawn to 5 miles. Using my
calculations, it would be 58 gauge and that would be .01 mm and its
length would be approximately 5 miles.
I guess someone can do it, but I had great fun getting to 38 gauge.
From the Gold Institute:
DUCTILITY AND MALLEABILITY
Gold is the most ductile of all metals, allowing it to be
drawn out into tiny wires or threads without breaking. As a
result, a single ounce of gold can be drawn into a wire five
miles long. Gold's malleability is also unparalleled. It can be
shaped or extended into extraordinarily thin sheets. For
example, one ounce of gold can be hammered into a 100
Millions of computers are manufactured worldwide each year and
gold plays an active role in their many components. The most
important use of gold is as a fine wire that connects circuits
to the semiconductors, or the "brains" of the computer. This
"bonding wire" is specially refined (up to "five nines" or
99.999-percent pure gold) and has an average diameter of one
hundredth of a millimeter - smaller than the diameter of a
Love and God Bless