Best Flexible Moulds by Penni Jo - Tiny Embellishments

(2 Reviews)
£10.79 (Exc Tax)
£12.95 (Inc Tax)
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Each durable urethane mould is hand poured and trimmed and has the ideal flex for making beautiful three dimensional elements from all types of metal clay as well as glass and polymer clays. The three dimensional nature of each element can be seen by light and shadow - the darker the shadow in the mould the deeper the sculpting, the more pronounced the dimension.

Most of the elements can be made hollow to conserve on precious metal clay and to make items lighter in weight. There are three common methods of filling a cavity. 

First, be sure that your clay doesn't show any "seams" on the side going into the cavity and press deeply to insure that all the detail is captured. For cavities that don't have "extremities" such a cross, roll the clay into a ball, place in the middle of the mould and begin pressing the clay outward toward the edges using your fingers or a blunt ended tool. This works well with smaller cavities.

The second method is to roll your clay out to the desired thickness with the size being a bit larger than the opening.  Then press the smoothest side of the clay into the mould and using fingers or a blunt ended object press the clay into the recesses of the mould.  When the moulds are new they usually don't need any release agent, however it can facilitate removing the piece especially if you want to remove it while it still has a bit of flexibility.  Otherwise, as the piece dries it will shrink a bit and the piece will simply fall out of the cavity most times.

The Third method is to roughly shape the clay into the semblance of the cavity size and press into the cavity.  A good example of this would be a shape with extremities such as a cross.  This is illustrated in detail on the product page.

With thirty years experience in the art of sculpting and working in a variety of media, Pennie Jo has designed her line of durable flexible three dimensional moulds in a wide range of elements and components that are perfect for all types of clay - metal, polymer and glass. They are ideal for very small decorative elements appropriate for all types of clay to larger elements that are great for bronze, copper and brass clays.



  • Except for metal and glass clays, do not leave uncured clay in the mould.

  • These moulds are not suitable for use with resin
  • Mould one part at a time.

  • Mould Care: After use, wash mould in soap and warm water.
  • Release Agents: Though a release agent isn't generally needed with metal clays, a light coating of a release agent such as HattieS® No Stick or other product may facilitate removing the piece. To minimize the change of breaking or distorting allow the moulded part to dry in the mould.  Use a mist of water to release polymer clay from your flexible urethane rubber mould. For other materials, test by moulding a part.  If the material sticks, a release agent is needed.
  • To remove tiny parts: roll a small piece of clay with a cone shape on one end. Gently flex the mould in several directions. Touch the cone point to the moulded part to lift out.

1.There is a measurement chart on the project insert that comes with your Best Flexible Mould that indicates how much clay is needed to fill each mould cavity. Roll a ball of clay, check it's size on the circle outline. Add or subtract clay from the ball accordingly. The chart below shows a ball of clay that is 1 1/16 inch in diameter when viewed from above.

2. Gently squeeze the ball of clay into a shape similar to the opening in the mould cavity. See illustration below. 

Reviews (2)

Tiny Embellishments - a goid mix

Written by Gillian Lockhart on 2nd Mar 2016

Bought these for the tiny butterfly's, but it has so much more. They are as it says on the tin - tiny about 5mm or less, but brilliant to use as additions on my silver pendants. They were use to use & easy to to get the silver clay out.

Great moulds

Written by Sara w on 10th Apr 2015

Theses moulds are great for adding decorative pieces to jewellery. Most importantly they are flexible enough to turn out your pieces. I have tried many kinds and these are really nice!

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