Jumbo Bubble Alphabet Silicone Moulds – Approximately 7 cm High × 2 cm Deep
Create beautiful, personalised letters with our Jumbo Bubble Alphabet Silicone Moulds! Featuring a rounded, chunky bubble-style design, these moulds are perfect for creating decorative letters, names, initials and personalised gifts.
Ideal for gypsum casting, including our GypsoGem Eco Resin, plaster, Jesmonite-style casting materials and other compatible casting compounds.
Each letter features a beautifully rounded, dimensional design, giving your finished creations a fun, modern and playful appearance.
Product Specifications
- Letter height: Approximately 7 cm
- Letter depth: Approximately 2 cm
- Letter width: Varies according to the individual letter
- Material: Flexible silicone
- Design: Chunky, rounded bubble-style alphabet
- Alphabet: A–Z (26 letters)
- Number of mould trays: 7 separate trays
- Manufacturing method: Handmade using custom 3D-printed masters
- Production: Made to order (pre-order)
What’s Included
The complete alphabet set consists of seven individual silicone mould trays:
- Tray 1: A, B, C, D (4 letters)
- Tray 2: E, F, G, H (4 letters)
- Tray 3: I, J, K, L (4 letters)
- Tray 4: M, N, O, P (4 letters)
- Tray 5: Q, R, S, T (4 letters)
- Tray 6: U, V, W (3 letters)
- Tray 7: X, Y, Z (3 letters)
Each tray contains recessed (negative) letter cavities for casting chunky, raised bubble letters.
Silicone Mould Tray Dimensions (Approximate)
The measurements below are for the finished silicone moulds and may vary slightly due to handmade production.
- Tray 1 – A B C D : width 15.7cm, depth of 2.9cm, weight = 382g
- Tray 2 – E F G H: width 15cm, depth of 2.9cm, weight = 364g
- Tray 3 – I J K L: width 14.2cm, depth of 2.9cm, weight = 328g
- Tray 4 – M N O P: width 16.7cm, depth of 2.9cm, weight = 420g
- Tray 5 – Q R S T: width 14.4cm, depth of 2.9cm, weight = 355g
- Tray 6 – U V W: width 15.5cm, depth of 2.9cm, weight = 318g
- Tray 7 – X Y Z: width 14.8cm, depth of 2.9cm, weight = 286g
- Overall Thickness: Approximately 1.89 cm (will vary by tray)
Estimated combined silicone weight: Approximately 2.5 kg.
Weights are estimates based on calculated silicone requirements and are not guaranteed final product weights.
Measurements are based on our current tooling specifications. Manufacturing adjustments, including demoulding lips and finishing, may affect final dimensions.
Suitable Applications
These moulds are ideal for creating:
- Personalised names and initials
- Decorative gypsum letters
- Nursery and children’s room décor
- Wedding and event decorations
- Personalised gifts and keepsakes
- Handmade home décor
- Creative craft projects
Always ensure your chosen casting material is compatible with silicone moulds.
Handmade Silicone Moulds & Surface Finish
Our silicone moulds are individually manufactured in-house using custom-designed 3D-printed masters and quality silicone. As these are handmade products rather than mass-produced factory moulds, minor variations in dimensions, silicone edges, surface appearance and finishing should be expected.
Visible or faint 3D-printing layer lines, small surface textures and minor cosmetic imperfections may be present. Some areas of the original masters cannot be sanded or smoothed without affecting the design. We take great care to minimise these imperfections wherever possible, but completely flawless surfaces cannot be guaranteed.
Our specialised silicone-processing equipment helps reduce trapped air, bubbles and pinholes. However, occasional minor surface imperfections may still occur.
These characteristics are part of the handmade manufacturing process and do not necessarily affect mould functionality.
Pre-Orders – Expected Availability End November 2026. NB! The pictures in the gallery is of the positive moulds, what you will receive is our blue silicone trays once moulded, 7 trays. When we have made a set the images will be replaced with the correct images.
PLEASE NOTE: THIS IS A PRE-ORDER PRODUCT.
Our Jumbo Bubble Alphabet Silicone Moulds are currently in the final development and preparation stages.
We anticipate that the mould designs and production tooling will be completed and ready for silicone mould manufacturing by the end of November 2026.
Once production officially begins, orders will be manufactured in the order they were received.
Standard production turnaround: 7–14 working days, excluding weekends, public holidays and courier delivery time.
Please note that this turnaround period will only commence once the moulds are ready for production, and not necessarily from the date your pre-order payment is received.
As these are newly developed, handmade products, the anticipated availability date may change if additional testing, design adjustments or manufacturing improvements are required.
We appreciate your patience as we work towards delivering quality handmade silicone moulds.
Epoxy & Traditional Resin Compatibility
Although these moulds are designed primarily for gypsum and compatible craft casting materials, customers may wish to experiment with other casting compounds. Epoxy and traditional casting resins have not been tested with these moulds. While they may be suitable, we cannot guarantee compatibility or a flawless, high-gloss finish. Epoxy resin is less forgiving than gypsum and can highlight even minor surface imperfections, including fine 3D-printing lines, surface textures and marks transferred from the silicone mould.
Additional sanding, polishing or finishing of the completed resin casting may be required. A completely flawless or mirror-gloss finish cannot be guaranteed.
Customers should conduct their own compatibility tests before using these moulds with epoxy or other alternative casting materials.
Silicone Mould Care Instructions
To help prolong the lifespan of your silicone moulds:
- Handle carefully when demoulding, particularly around enclosed letter openings and narrow sections.
- Avoid excessive pulling, stretching or force, as this may cause tearing.
- Clean gently with lukewarm water and mild soap when necessary.
- Avoid abrasive cleaners, sharp tools and harsh chemicals.
- Allow moulds to dry completely before storage.
- Store flat in a cool, dry area away from direct sunlight.
- Do not place heavy objects on the moulds, as this may cause distortion.
- Avoid excessive heat unless the silicone’s temperature suitability has been confirmed.
- Use a suitable mould release agent if required by your casting material.
- Support the silicone mould appropriately during casting to help maintain its intended shape.
The lifespan of each mould will depend on the casting materials used, frequency of use and handling.
Important Information – Please Read Before Ordering
- This listing is for the complete set of seven silicone mould trays covering A–Z.
- Finished gypsum or resin letters and casting consumables are not included.
- Silicone colour may vary depending on material availability and manufacturing batches.
- Minor variations in dimensions, silicone edges and surface appearance are normal for handmade products.
- Finished casting results may vary according to your chosen material, mixing procedure, casting technique and finishing method.
- Our mould designs and manufacturing processes may be improved periodically, which may affect specifications, dimensions and pricing.
- These moulds are intended for craft casting and are not certified for food use.
- Some product photographs may have been enhanced or generated with AI assistance for presentation purposes. Actual product colours, appearance and finishes may vary.
Bring your creative ideas to life with our beautifully rounded Jumbo Bubble Alphabet Silicone Moulds, carefully handmade for your next personalised project!
