William Wood-Write silicone casting block mold 15/16 x 5-1/8 x 5-15/16 - made in Canada

Silicone block casting mold – made in Canada

Cast your own custom blocks with this silicone casting mold made in Canada by William Wood-Write. Designed for consistent sizing and clean results, this mold is ideal for Fusion/hybrid projects or full resin casts.

The flexible silicone construction makes demolding easy while maintaining the shape and detail of your casting. Whether you're working with wood and resin or experimenting with embedded materials, this mold gives you a reliable, repeatable setup.

What size block does this mold produce?

This mold produces one block approximately 15/16" × 5-1/8" × 5-15/16" (23.8 mm × 130.2 mm × 150.8 mm) — slightly oversized to allow for trimming and squaring after casting.

What is the exterior dimension of the mold?

The outside diameter of the mold measures approximately 6-1/4" × 7" (158.8 mm × 177.8 mm) overall. 

What can I use this mold for?

This mold is ideal for:

• Fusion/hybrid blocks (wood + resin)
• Full resin blocks
• Creative embedded materials like coffee beans, pigments, or inlay elements

How do I pour resin using this mold?

If creating Fusion/hybrid blanks, start at step 1. If you're only working with resin, start at step 2.

• Place the wood in the mold
  Position your wood securely inside the mold. If it's loose or wobbly, use wedges like popsicle sticks to hold it in place.
• Pick your pigment
  Choose the colour pigment you'd like to use—this is where you can get creative.
• Prepare your scale
  Have a digital scale ready. You'll need it to accurately measure your resin components.
• Measure the resin
  All resins come in two parts: Part A and Part B.
  Important: Some resins are mixed by weight, others by volume. Ratios can vary (for example, 1:1 or 2:1). Always follow your resin manufacturer’s instructions for accurate mixing and working times.
• Add your pigment and mix thoroughly
  Once you've measured your resin, mix in your colour. If you're using a powder pigment, make sure there are no clumps. Stir thoroughly until the colour is fully blended and even.
• Pour the resin
  Carefully pour the resin into the mold, fully covering the wood.
• Use a pressure pot
  Place the mold in a pressure pot to minimize bubbles and improve clarity. Leave it under pressure for about 4 hours, or as recommended by your resin manufacturer.
• Demold when ready
  Follow the curing time specified in your resin instructions. Once fully cured, remove the casting from the mold — it’s ready for the next step.

Price per mold in Canadian dollars.