Recreating The Lost Art Of Damascus Steel
YouAreFatMan writes "The Chicago Tribune has an article about two researchers -- a metallurgist and a blacksmith -- who have apparently been able to reproduce the legendary Damascus steel. 'Islamic artisans used it for centuries to make swords that spurred envy and myths among Europeans--including the legend that a Damascus blade could slice a falling silk scarf in midair.'"
To hell with proper syntax! I put my punctuation outside of quotes. Change that archaic rule now!
Speaking of archaic technologies and practices, it's somewhat interesting to note that placing punctuation marks inside quotes is a relatively modern practice, started after the advent of the printing press. The use of justufied text became popular and it lined up better if the lines ended in a quote, rather than a period. The reasoning was aesthetic, not logical.
I also put punctuation outside quotes, when dealing with technical writing, where a quoted command could become confusing. I'd love to see the practice become more widespread.
Cheers,
Jim in Tokyo
-- My Weblog.
Historians will tell you that the information the crusaders brought back was what caused the end of the European dark ages and the beggining of the Renaissance.
I hate to say it, but this is not really accurate. To some degree, what crusaders brought back to the west was important, but beyond technology, it was the religious and cultural climate of the twelfth and early thirteenth centuries followed by the decline in population of the fourteenth century that really spurred on what we would call the Renaissance. What happened was that there was a vast cultural bloom (in literature, art, theological thinking, etc...) followed by a thinning of the population that allowed individuals to really stand out. Technology was really only secondary. BTW, as a medievalist, I really resent the term dark ages. They really were not dark at all. Literature and art and culture bloomed in this era, merely in a different way than they had in the Roman era. So please, call it the middle ages or medieval times or even better, use precise centuries when you speak. Dark ages is derogatory and incorrect. Thanks. Adam.
The part of the text in which the story occurs does not reference s scarf, but a cushion and then a veil.
Here is the relevant section:
Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
More neat katana tricks: the aesthetically and functionally perfect curve of a katana doesn't form until the nearly-finished blade is quenched, and it forms naturally - it's not forged in. The differing hardness and thickness on either side of the blade causes it to cool and contract at different speeds, forming the curve. The steel on the back of the blade is also much softer than the steel of the edge, which is why you'll see people in movies deflecting and parrying with the back of the blade. This allows an enemy's weapon to bounce off the softer steel so the hard edge doesn't chip or shatter.
At least, I think so - that's what I heard from a friend who was a blacksmith for a while.
There's a lot of confusion in the posts here...
Note: I'm almost exclusively discussing European techniques.
I'm an amateur knifemaker. I don't forge blades yet (well, I've started one in 070A72 but not getting very far because of time and meteorological conditions: it's too damn hot to spend time in the forge)... but I'm studying the background and making up knives and bill-hooks by stock-removal either from rolled bar or from forged blanks that I buy.
I can buy a piece of 'damascus' about 20cm × 5cm × 1cm (i.e. 8" × 2" × 13/32") from my knife dealer, or I can buy a part-finished blade in 'damascus'. I can even get a near-as-damn-it finished bowie blade that just needs quillons, handle and pommel then sharpening.
These blanks and bars can even be made of stainless steels. Clearly this has very little to do with the original Oriental process (stainless was invented in Sheffield, England, in around 1916). The term 'damascus' is used because of the technique of taking two steels of different compositions and forge welding them together, and because the visual effect is very similar.
The action of folding, hammering, repeating gives a final piece that has many many layers of these different steels. When you clean up the finished piece with a certain chemical (I forget the list of things used, though I seem to remember iron sulphate and even citric acid), the difference in colour between the two steels is accentuated.
Making and using modern 'damascus' steel responds primarily, to my mind, to aesthetic rather than functional criteria. This is confirmed by the increasing use of 'damascus' amongst custom knifesmiths and hobbyists for making mitres, guards and pommels. Modern steels are easily good enough for the job of cutting and holding an edge. Indeed, for some jobs, you really should only use stainless (knives that touch foodstuffs, including skinning and hunting knives).
Up until the nineteenth century, and for some applications, into the first couple of decades of the twentieth century, good steel was too expensive and too brittle to be used alone. It is very common to find knives, axes, adzes and other chopping tools that are made by welding a hard steel edge onto a softer but tougher 'body'. This does not give the 'damascus' effect of wavy lines throughout the tool. Another technique was to take a bar of the expensive hard steel, a bar of the less expensive tough steel or iron, and twist the two together. This technique is ideal for the forging of long blades such as swords. This technique was known to the Vikings in Scandinavia and in England.
There are quite a few books that explain how to go about creating these modern 'damascus' steels. From the simple wavy pattern, to repeated geometric patterns. I've even seen photographs of blades with legible text composed from 'damascus' blocks.
Getting back to the point, and to touch upon patents a little, is that these two Americans have re-discovered that traces of Vanadium made a big difference... Well, I bet that professor of metallurgy is kicking himself now. It is very well known that very small amounts of Vanadium, Manganese, Chromium, etc, can change the physical properties of steel. And since we're also talking about the micro-cystalline structure of a composite material, he should have thought about this a little earlier... Take two steels, one of which contains just enough of an element that increases toughness, make 'damascus' steel from them. Simple? Perhaps so simple he overlooked it. Perhaps he thought "well, they wouldn't have had access to Vanadium back then, so it's not worth looking into".
But then again, there are some very strange steels that have been produced (and may still be being produced) in what we would call 'very primitive conditions' in India... For example there is a very large pillar made of iron or steel (I forget which, and I forget where it is) that has peculiar corrosion-resistant properties, supposedly due to "trace impurities"...
You should never overlook the improvements that can arise from letting "impurities" into things... I bet the first time yeast found its way into the dough, it was considered an "impurity".
I know blacksmiths who have been making what they refer to as damascus steel blades for years. Most of it is made by heating and pounding large steel cables. I guess it isnt the same as the old amascus steel, but it definitley has the look.
-- free as in swatantryam - not soujanyam.
Hmmm.
What do they say about the earlier article in Feb '85 on the same subject, by researchers claiming to have solved the puzzle?
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