Archive for the 'Metal craft' Category

3D scanning in the 1930s

Powerhouse Museum collection, object  2004/68/1. Gift of Frederick Pollock, 2004.

Powerhouse Museum collection, object 2004/68/1. Gift of Frederick Pollock, 2004.

If you visit the Powerhouse Museum between 10 am and 1 pm on 9 March for our 25th birthday celebrations, you will be able to see the accurate detail captured in this bronze bust of Sydney pharmacist Ernest Pollock. Created by the process of Sculptography in Osaka in 1934, it demonstrates that 3D scanning is not a recent achievement. I will be one of several curators in the museum over the weekend, each with a group of objects to discuss with visitors. The theme of my selection is ‘making things’.

Continue reading ’3D scanning in the 1930s’

Hargraves Cradle – Used to Make Australia’s First Payable Discovery of Gold

Gold washing cradle, designed by William Tom Jr and Edward Hargraves, made by William Tom, Ophir goldfields, Australia, 1851, Powerhouse Museum H8859

Gold washing cradle, designed by William Tom Jr and Edward Hargraves, made by William Tom, Ophir goldfields, Australia, 1851, Powerhouse Museum H8859

This gold cradle was the first to be used in Australia to discover payable quantities of gold. It was made by William Tom Jr following directions from Edward Hargraves and was based on similar cradles (also called rockers) used to wash for gold in California.

Edward Hargraves was the man responsible for triggering the gold rush in New South Wales in the 1850′s and soon after his discovery even larger finds were made n Victoria. Although Europeans had settled in Australia in 1788 it took over 50 years for them to begin successfully extracting commercial quantities of the country’s vast gold resources.

Continue reading ‘Hargraves Cradle – Used to Make Australia’s First Payable Discovery of Gold’

What does a curator really do in a day?

1.-Min-IS-3205-0002-450x300.jpg

Portrait of Min-Jung Kim, Curator of Asian Arts & Design, Powerhouse Museum, Photo by Sotha Bourn

People often ask me what curators do. Usually my answer is “we research, collect, document and display objects.” However, this answer doesn’t seem to satisfy people who wonder what really goes on behind the scenes in the museums and galleries.

Continue reading ‘What does a curator really do in a day?’

Traditional Korean gongs – reflection and resonance

IS-3688-0209-450x299.jpg

Echo of a millennium Korean dancers performing at Powerhouse Museum 2011. Photography Sotha Bourn

“Ask Koreans … what appeals in Korean music and typical responses will focus on feelings … Korean music tugs at the heartstrings. Korean music – and, by extension, Korean musical instruments… – alone reflect the air, the water, and the soil of the Korean peninsula.” (Howard 1995: 9)

This photograph was taken at a traditional Korean performance at the Powerhouse Museum last year, coinciding with the opening of the Spirit of jang-in: treasures of Korean metal craft exhibition. If you look at the two musicians in the centre of the stage, you can see that they are each playing a gong, one small and one large.
Continue reading ‘Traditional Korean gongs – reflection and resonance’

How to make a nib – a story of gold rainbows and diamonds for Valentine’s Day

Nibs1-450x291.jpg

Powerhouse Museum Collection.

I struck gold in the basement last week: 14 carat gold in the form of this delightful didactic display showing stages in making a fountain pen nib.

Nibs-heart-251x300.jpg

Powerhouse Museum Collection.

Note the shape of the ‘breather hole’, which exposes ink to the air and helps it move smoothly towards the writing tip: a tiny heart. The perfect nib for writing a Valentine’s Day card!

Gold has been used to make jewellery and keepsakes since ancient times. Pure gold is too soft to use for nibs, or indeed for jewellery, so alloys are used instead. To make 14 carat yellow gold, the pure metal is alloyed with copper and silver; 58.3% of the mixture is gold, and the rest consists of equal amounts of copper and silver.

A nib with a gold point would wear quickly, so a tiny quantity of a fourth metal is fused onto the writing tip. This is iridium, a very rare, very dense element. Like gold, it is highly resistant to corrosion, and an iridium-tipped gold nib can last a lifetime and write millions of words.

Iridium derives its name from the Greek goddess Iris, whose symbol was a rainbow. The chemist who discovered it, Smithson Tennant, named it for the ‘striking variety of colours which it gives, while dissolving in marine acid’ (hydrochloric acid). Just the element for penning a Valentine’s Day card with hope in one’s heart!

Tennant also discovered the true nature of diamond, another gift we associate with romantic love. He did this in 1796 by rather unromantically heating diamonds with potassium nitrate in a gold vessel and deducing that diamond is merely a crystallised form of ‘charcoal’, the element we now call carbon.

Nib-list1-450x499.jpg

Powerhouse Museum Collection.

The gold nib display was donated to the museum in 1924 by the Wahl Company of Chicago, which later made pens with the brand name Eversharp. Reaching behind it on the basement shelf, I found this slightly battered card listing the steps in making a nib. As well as adding value to the object, this list has a certain inherent charm. It links us to the person who wrote it by hand, perhaps using a gold nib with a tiny heart delivering ink to its rainbow tip.

A Korean-Australian neckpiece – traditional techniques migrated to Australia

IS-3200-0024-450x705.jpg

87/692 Neckpiece, made by Won Ho Chong, Adelaide , 1981. Collection: Powerhouse Museum

The Asian art and design collection of the Powerhouse Museum holds many fine examples of metal craft, including a significant collection of decorated Japanese tsuba (sword guards), as well as kozuka knife sheaths and handles, which use an alloy of copper and gold named shakudo.

This neckpiece also uses shakudo, as well as shibuichi (a copper-silver alloy), copper and sterling silver. It was made by Won Ho Chong in Adelaide, South Australia in 1981 and acquired in 1987 – making this the first Korean-Australian object in the collection.

Won Ho Chong was born on 28 October 1934 in Busan, South Korea, during Japanese occupation. Chong initially studied literature at university, although interest led him to traditional metal craft and design during the early 1960s in Seoul. In 1964 Chong started his own jewellery design studio, and in the following years he received awards at international craft and design competitions, such as in Japan and the USA. In 1967 he undertook an artist’s residency at the Yamada Reiko studio in Tokyo. Chong migrated to Australia in 1970 and in 1976 he studied Japanese metal craft under Master Satsuo Ando, among others, after receiving an Australia Council grant. From 1978-1981 Chong lectured at the South Australian College of Advanced Education, and it was in 1981 that he made this neckpiece.

IS-3200-0025-450x192.jpg

87/692 Neckpiece, made by Won Ho Chong, Adelaide, 1981. Collection: Powerhouse Museum.

Chong’s work is influenced both by traditional Korean and Japanese materials, techniques and craftsmanship, particularly the patination of different alloys to create a range of colours. The dark brown to black metal seen in the neckpiece is an alloy of copper and gold, named shakudo in Japanese or odong in Korean. It is also referred to by many other names, including ‘red copper’, ‘black gold’, and ‘crow’s gold’, the latter term due to the similarity of the classic blue-black colour to crow’s feathers. However, with different ratios of gold to copper, a range of colours can be achieved through patination. The blue-black colour is a result of 3-5% gold, brown to black colours are a product of 0.25-3% gold, and ‘purple gold’ has a gold content of over 10% (Oguchi 1983: 125 and O’Dubhghaill & Jones 2009: 290).

The silver-grey colour seen on the neckpiece is an alloy of copper and silver called shibuichi in Japanese, and is also known as misty or hazy silver. Shibuichi, or ‘a quarter’, is so named as the silver conventionally amounts to 25% of the alloy’s composition. Just as with shakudo/odong, there are colour variations in shibuichi, such as a light variant that contains a high amount of silver, and a dark variant that contains copper, silver and gold (Oguchi 1983: 125 and O’Dubhghaill & Jones 2009: 291).

Briefly, the traditional process of creating these alloys involves melting the copper in a carbon crucible, and adding the desired quantity of gold and/or silver. The alloy is then poured into a mould in a hot water bath, which slows down the cooling process and increases the workability of the ingot. It is then hammered or pressed into a sheet or plate and annealed. Surface finishing is vital to create the desired colours – first the piece is polished using stone and charcoal, then cleaned with sodium bicarbonate, dipped in a colouring solution made of the juice of white radish, and finally immersed into a boiling colour solution, where the colouration of the alloys take place (Oguchi 1983: 125-129 and O’Dubhghaill & Jones 2009: 291-293).

You can see this object and many more in Spirit of jang-in: treasures of Korean metal craft, but hurry as the exhibition closes this Sunday 12th February!

Alysha Buss, Assistant Curator for Spirit of jang-in: treasures of Korean metal craft

References

O’Dubhghaill, Coilin and Jones, A. Hywel, 2009, ‘Japanese irogane alloys and patination – a study of production and application’, in Proceedings of the twenty-third Santa Fe symposium on jewellery manufacturing technology, Albuquerque, New Mexico, May 2009, Met-Chem Research, pp 289-324.

Oguchi, Hachiro, 1983, ‘Japanese Shakudo: Its history, properties and production from gold-containing alloys’, Gold Bulletin 16 (4):125-132

History Week: Rice bowls – food, memory and tradition

IS-3355-0003-450x351.jpg

Bowl, oxidised steel/silver / gold / bronze / 'odong' in 'choum ibysa' technique, made by Joungmee Do, Melbourne, Victoria, Australia, 1999 'choum ibysa' Photography Marinco Kojdanovsk:i Powerhouse Museum .

Memories and food are often wrapped up together, a well known example is that of Marcel Proust, his Aunt Léonie and her lime blossom madeleines.

Rather than madeleines, Joungmee Do, a Korean-Australian artist, uses the concept of the rice bowl to explore her own personal memories and meanings associated with food and tableware, in the context of Korean culture and tradition. Rice is a staple food and culturally significant in Korea, and the rice bowl is not just a functional object. Of her work, Bowls, Do says,

The concept and aesthetic style of these bowls was influenced by the Korean daily utensil, the rice bowl …When I started making these bowls, I was thinking about my childhood memories, which are linked to the idea of the rice bowl. Personally a bowl not only acts as a container for objects, but also symbolizes a receptacle for the thoughts of myself or someone else.”

Do created ‘Bowls’ from oxidised steel inlaid with gold, silver, bronze and odong (a copper-gold alloy) wire, using the traditional Korean metal craft technique of jjoum ipsa (or choum iybsa). In this process, the artist uses a chisel and chasing hammer to create closely spaced indentations across the entire surface of the object in horizontal, vertical and diagonal directions. The resulting surface of the object has the appearance of woven fabric. Metal wire can then be inlaid into the chiselled surface to create a pattern.

IS-3355-0022-450x354.jpg

Bowls (detail of male bowl), Joungmee Do,1998. Photo: Marinco Kojdanovski : Powerhouse Museum

‘Bowls’ was created as a pair, one male and one female, in the way that Korean rice bowls are conventionally presented. The male rice bowl has a domed lid covering the bowl, and both the lid and bowl are densely covered in intricate inlaid patterns, with a blue-black oxidised steel background.

IS-3355-0019-450x337.jpg

Bowls (detail of female bowl), Joungmee Do,1998. Photo: Marinco Kojdanovski: Powerhouse Museum

The female rice bowl has a hole in the centre of its lid, and is also decorated with inlaid wire against an oxidised steel background. However, the female rice bowl is less ornately decorated than the male, emphasising the fabric-like chiselled surface texture.

The inlaid patterns used by Do were inspired by Joseon dynasty bojagi, or wrapping cloths. In the strict Joseon society, wrapping cloths were a way in which women could creatively express their respect for the recipient and love and wishes for their family. Wrapping cloths were used in many different ways, to wrap, cover, carry or store objects. A specific example, sang po, were used to cover food or food tables (Kim Kumja Paik 1998: 13, 16-18).

Through the making process of ‘Bowls’, Do was able to bring together personal memories and Korean culture and traditions, combining the personally significant form of the rice bowl, the ipsa technique and the bojagi style decoration. Do says,

“When I was practicing the iybsa technique, each chisel mark and hammer stroke proved equal to every single line of stitching in a wrapping cloth. The feelings involved in the chisel mark or stitching line were very similar, and this united and transcended the past and the present.”

You will be able to see these bowls in the upcoming exhibition, Spirit of jang-in: treasures of Korean metal craft, opening on 27 October 2011 and running until 12 February 2012.

Alysha Buss, Assistant Curator, Spirit of jang-in: treasures of Korean metal craft

References

Do, Joungmee, Artist Statement, unpublished manuscript.

Kim, Kumja Paik, 1998, ‘Profusion of colour: Korean costumes and wrapping cloths of the Choson dynasty’, in Roberts, Claire and Huh, Dong-hwa (eds), Rapt in colour: Korean textiles and costumes of the Choson dynasty, Powerhouse Publishing, Sydney, pp 10-18.