Meanwhile, this youngest, newest member is released. It allows Aida to run up nicely with the developments in the field of metal clay, I'm very excited.
The clay approaches sterling silver and after firing about 60% stronger than the Art Clay Silver 650. At the request of Craftlines I also tested the version that is available from September 1, 2016 in the webshop. For colleagues it seemed useful to share my test results in a blog. Please note that all test results as described below, have been held against the light of the Art Clay Silver 650!
Material used: 25 g Art Clay Silver 950
Of this quantity, I made a ring, a strip (with which after firing, I want to bend a ring around the steel tribulet) and a small pendant with a bail. Taking into account a larger shrinkage percentage, the base ring is formed 7,5 sizes larger. Also taking into account the use of structure - thickness 1,5 mm. – width 1 cm.
The clay can be rolled out smoothly, also with the use of silicone texture mats. As compared to the 650 this clay more sticky. To this one has to be alert, it requires a slightly modified method of cutting the clay.
Drying goes well, the drying time is slightly longer than the regular clay. I used a food dehydrator. In the dried state, it’s slightly darker in color.
The clay is sufficiently strong to sanding and good finish. With addition of a few drops of water, a paste can be made of the excess residual waste. It allows absolutely trouble free fixing pieces together.
Firing goes perfect! In a cold kiln to 500°C - hold for 30 minutes and then directly to 850°C. - hold 60 minutes. Then turn off the kiln and leave to cool in the kiln to room temperature.
After firing the color is light metallic grey. Brushing goes well and leaves no obvious traces. Polishing takes - as opposed to the 650 - some more effort, the material is therefore clearly harder.
With polishing paste the relevant parts can be given an even more glossy finish. The final design has a deeper silver color than bright fine silver color, which we are accustomed to from the 650.
As previously estimated the ring shrunk about 7-8 sizes. Clearly, this is a point that must be taken into account. After finishing the results are beautiful silver designs with a harder surface. The strip is carefully curved around the tribulet to an open ring. Due to the hardness of the metal took it more effort than expected to the 650. The bail stayed firmly at the back and can withstand normal pull.
Forming: good, for attention that the clay is more sticky than the 650.
Drying: good, for attention that the drying time is longer than 650.
Firing: good, for attention that the firing time is longer, which is a disadvantage when
used during workshops.