Ford Hallam Posted May 28, 2010 Report Posted May 28, 2010 I recently made a pair of menuki following the classical Japanese approach and using the uchi-dashi process. As this is not a technique that's been illustrated in any significant way previously, anywhere , I took the time the take photographs of the project as it proceeded. You can see the images here. The design is my own but I think it's reasonably traditional/classical, late Edo perhaps. The metal is about 22ct and is an alloy of silver and gold that is known as Ao-kin( green-gold) in Japanese. As the final weight was a factor (what with the gold price being so high etc) I used quite a thin sheet, around .75mm whereas usually 1.1mm, or more, would make the job a little easier. These measure 3.7 cm and 4.3 cm long and weigh about 14 grams together. I've not previously done anything this fine, or complex, in uchidashi before and I now think I can better appreciate why menuki were at one time considered the pinnacle of tosogu manufacture. There's almost as much work in making a pair like this as there is in making the average tsuba. I haven't really done any proper photo editing as yet so the colours are all over the place but I hope my little photo essay sheds at least a little light on a fairly obscure process. regards, ford Quote
machinist Posted May 28, 2010 Report Posted May 28, 2010 Powerfully sensitive work, and yes I was wondering how menuki were made. Quote
Carlo Giuseppe Tacchini Posted May 28, 2010 Report Posted May 28, 2010 Deserves to become a sticky. (IMHO) Quote
Amon Posted May 28, 2010 Report Posted May 28, 2010 Ford! Thanks for sharing! Very interesting and magnificent work. Kind regards, Quote
BMarkhasin Posted May 28, 2010 Report Posted May 28, 2010 Fantastic work Ford! Thanks for illustrating the process -- very educational. You are giving me a great appreciation of the skill-set involved in making quality tosogu. However, I have a question (or 10...). In old menuki, there is occasionally evidence of sprues on the backs and rarely I have even seen minute porosity likely resulting from degassing. These observations are suggestive of a casting process leading to some partially formed intermediate product, which would then be worked further to achieve the desired levels of detail. What are your thoughts on this form of menuki manufacture? Thanks for the insights. Best Regards, Boris. Quote
drdata Posted May 28, 2010 Report Posted May 28, 2010 Wow. Truly impressive. I would have bet that lost wax casting was used to make menuki. Very nice work there Ford. Thanks for posting. Quote
Steve Waszak Posted May 28, 2010 Report Posted May 28, 2010 Absolutely fascinating, and wonderful work, Ford. Many thanks for the terrific "process photos." Cheers, Steve Quote
Ford Hallam Posted May 28, 2010 Author Report Posted May 28, 2010 I'm really chuffed you're getting something out of these images. Cheers all Boris, what you are describing sounds awfully like a modern jewellery casting. Casting metal in such thin section purely with a gravity pour, maybe a hand swung centrifuge arrangement, is unlikely in my opinion. Then you have to discover what was used to make the moulds and I doubt clay, however fine, would hold up on such a complex form as a menuki. Consider also the wax model you need to start with. Without rubber moulds and wax injection it would mean each wax would have to be first carved individually. So I can't see any evidence that such a process was ever used in the past. regards, ford Quote
Pete Klein Posted May 28, 2010 Report Posted May 28, 2010 LOL -- Ford -- you have absolutely no idea of how happy you just made me!!! ROFLMAO!!! Quote
Ford Hallam Posted May 28, 2010 Author Report Posted May 28, 2010 Hiya Pete, clearly not :D ...but you know me, always doing my best to spread good cheer Quote
bridgeofdreams Posted May 29, 2010 Report Posted May 29, 2010 Ford, Stunning work, and very informative, as I said elsewhere. I'll be back many times to look more and more carefully. On the subject of casting which Boris raised, someone - I don't recall now who* - asked me a few years back to help them find a Japanese Museum exhibit catalog (probably) that showed some molds that had been used, perhaps by the Goto. Bob Haynes said that he thought it sounded familiar, but neither he nor I have been able to identify the publication. Perhaps it will turn up one day. Craig *Rich Turner? Pete? In the face of probable eventual Alzheimer's, I ought to start taking more careful notes. Quote
Bugyotsuji Posted May 29, 2010 Report Posted May 29, 2010 Wonderful. Many thanks for sharing this. Quite an eye-opener. Quote
Den Posted May 29, 2010 Report Posted May 29, 2010 Very impressive work! Thank you for taking the time to educate us! Quote
Ford Hallam Posted May 29, 2010 Author Report Posted May 29, 2010 Glad to help, Gents Craig, perhaps you're referring to these images. They're from the Sano Art Museum catalogue; Sword Fittings by the Family of Goto.1994 These are actually sample imprints taken from completed menuki as a means of record keeping. The actual piece is pressed into a fine, wet clay first and this is allowed to dry. Once the clay is dry, and hard, hot matsuyani (pine rosin, that we use to secure the work when carving etc) is pressed into the clay mould. There are quite a few such samples in existence in fact. I posted some images of others here on the NMB some time ago when a similar query was raised. I think these sorts of misunderstanding are fairly common when academics try to interpret material without reference to any relevant empirical knowledge that may still be available. regards, ford Quote
myochin Posted May 29, 2010 Report Posted May 29, 2010 Similar examples are also found in the "Katchû - Abumi - Tôsôgû, Kaga Han no Katchû" exhibition catalogue, 1997. There are also some wooden tsuba examples. Quote
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