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Delft casting clay

Article no. DE14160
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Delft aluminium ring gives the goldsmith an opportunity to reproduce detailed originals.


Hans Karreman, a designer goldsmith from Delft, has developed this method of casting.


He was not satisfied with the cuttlefishbone method because the castings were rather rough. After a lot of experimenting he developed this method which, as often is the case, is brillant by its simplicity.


Contents: 2 kg


What you need is: Delft aluminium ring, comes in 2 pcs. and casting clay. In this casting clay lays the secret of the method. This clay is so fine that the casting comes out very smooth.


How to do:


  1. Fill the ring with Delft Clay and remove excess.
  2. Turn the clay filled upside down.
  3. Press the model halfway into the clay. Press the surrounding clay against the model.
  4. Sprinkle the clay filled ring with talcum powder.
  5. Place the second ring on the filled ring with the vertical marks on the two halves aligned.
  6. Fill the second ring with clay and remove excess. Remember to keep the position of the alignments marks together.
  7. Separate the rings and remove the model with a pair of tweezers. If subject is stuck, just move it slightly to make a space.
  8. With a small stick pierce a hole for the pouring channel. Make air escape holes opposite the casting channel.
  9. Cave the pouring channel into a funnel shape with a penknife and remove all the loose clay.
  10. The funnel must be connected directly to the empty space. Do not make the funnel passage smaller than 5 mm. Smooth the inside of the casting channel.
  11. Place the two parts of the mould together. Replace the vertical marks in the same position. The mould is ready for casting.
  12. While pouring, rest the crucible on the mould. Keep the flame on the moulted metal whilst pouring.
  13. The burned clay in the mould must be removed and the reminder of the clay can be used again immediately.