Stone to Bowl grand finale

Last week was my final week of work at Scottish Sculpture Workshop on my VACMA funded Stone to Bowl copper project.

It focused on getting the bellows organised so that I can work anywhere in the landscape. Monday was spent fixing the blower which had arrived fractured. Eden Jolly did most of the work as it involved tig welding, but I did the cleaning of the joins and offered cups of tea. Eden and Fleur (an Erasmus student) made it a super wee base and I went to Portsoy to get it some flexible tubing. fanblowerSept18By Wednesday all was ready to return to copper smelting trials. The smelt balls tend to over heat in the shaft furnace as it’s hard to see what is going on.

smeltfurnaceSept18

So on Thursday I dug a pit furnace and trialed that smelting with great success.I got 35gm copper from 50gm ore in 30 minutes and using about 2kg of charcoal.

smeltballSept185i

On Friday it was time to trial the bowls mentioned in the project title. This was using ore I’d smelted alloyed with 10% silver. The photo shows the open mould after casting. The copper did not complete the pour. I need to redesign the bowls with a thicker base. Even after heating the moulds and with sling casting, the copper would not stay molten in such a thin walled vessel.

slingSept18i

Spending 4 weeks developing processes and tools has been brilliant and the work goes on.

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Stone to Bowl

bloweri

Finally the hand cranked forge blower has arrived. This is hopefully the last piece of the Stone to Bowl project. The forge blower will deliver air to the furnace, powered by hand rather than electricity. I’ll find out next month at SSW if it can be made to work. If the bellows can be hand powered it means that I can work anywhere,

day7smeltblower

This is the model we hope to replicate.

Casting on the beach

beachpour Roddy brought his mobile foundry to the beach at Cellardyke on Friday and we had a great day pouring different metals into beach-sand moulds. We ran two small furnaces so that we could do mixed metal pours. This is me pouring silver, this cast is sterling, the other one in the picture is fine silver. mixpour This is a brass and bronze mixed metal pour. One of the furnaces was bellows operated, so we also had Gordon Lochead from the Silver Studio helping out; and Mary took the photos. mixedmetal You can see both furnaces and just see the bellows on the right in this pic.