Part no. 122.940

Delft Clay Casting Kit

    • Includes 4.4Lb(2Kg) Bag of Clay
    • Set of 60mm Molds & Instructions

     Email Newsletter

    Sign up to receive coupons & product specials from Otto Frei:
    Please give us your details to receive specials and promotions from Otto Frei:

    The Delft Clay Method is a highly refined form of sand casting that substitutes genuine Delft Clay from Holland for ordinary casting sand. The process was invented by Hans Karreman, a Dutch goldsmith. Delft Clay is much finer than casting sand, providing remarkably sharp and highly detailed castings in gold, silver, copper-based alloys, pewter, etc. Castings require very little finishing work. Once you have cast your piece, the Delft Clay can be re-used. Since this is a cold-molding process, molds can be made from patterns composed of wood, wax, epoxy, plastics, and, of course, metal. Because this is a type of sand casting, it is best suited to producing castings without pronounced undercuts. A Delft Clay mold is created in these steps:

    1. Fill and compact the Clay into one half of the aluminum ring frame
    2. Remove excess clay with a straight edge (e.g. a flexible steel ruler)
    3. Press your original pattern halfway into the clay.
    4. Brush talcum powder over this surface of the mold
    5. Install the other half of the aluminum ring frame, fill with clay and compact
    6. Open the ring frame and remove the pattern
    7. Carve out a pouring channel and vents
    8. Pour in molten metal

    Kit Contains:


    Moto Frenzy
    Thanks for your interest in
    Please give us your details that we will let you know via Email/SMS when the product is back in stock.
    (Never made public)
    What Other Items Do Customers Buy After Viewing This Item?

      • Non-asbestos, fibrous, fireproof material used as a surface for soldering
      • Soft enough to pin or press objects (work) into its surface.
      • 6" x 3" x 2"
    • Part Number: 122.821

      Borax Flux-1Lb

    • Part Number: 154.207MAIN

      Silquar Soldering Board

      Choose from 3 sizes:

      • 154.207  6" x 6"
      • 154.208  6" x 12"
      • 154.209  12" x 12"


      • 1/2" thick
      • Hard stone-like non-asbestos soldering boards
    • Part Number: 122.645

      Pro-Craft Mold Parting Powder-1 Lb

      • Provides clean mold separation
      • 1 lb can