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AMACO
Marblex™ Self-Hardening Clay, Gray, 25 lbs.
$67.00
This gray, self-hardening modeling clay is prepared in moist form, ready to use for all methods of modeling, including wheel throwing and sculpting. When completely dry, finished pieces are durable but not waterproof.
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- Age Group
- 6+ years
- Grade Level
- Grade 1+
- Material
- Clay
- Color
- Gray
In stock — 25 available
Expected back in stock: Aug 13, 2026
This gray, self-hardening modeling clay is prepared in moist form, ready to use for all methods of modeling, including wheel throwing and sculpting. When completely dry, finished pieces are durable but not waterproof. Knead Marblex™ to increase plasticity before modeling. Keep unused clay in a plastic bag or wrapped in damp cloth to prevent drying out. It will shrink during drying, so it is best to hollow out bulky sculptures or wrap a slab of clay around a loose crumpled paper armature before modeling. Allow the finished piece to dry slowly and evenly on all sides at room temperature and away from heat until hard. When piece is completely dry, decorate with AMACO® Rub 'n Buff®, school paints, temperas, acrylics or liquid crayons. After decorating, it is a good idea to coat with shellac or varnish to seal it and make it water resistant. 25lb box.
Key Features
- Formulated for handbuilding and sculpting techniques
- Modeled objects are permanent without firing
- Non-toxic
- Pieces dry hard and durable, but not waterproof, can be painted
- Includes 25 lbs.
| Age | 6+ years |
|---|---|
| Assembly Required | No |
| Balloon | No |
| Battery Included | N |
| Brand | AMACO |
| CSI Part (cross-ref) | AMA473408 |
| Color | Gray |
| Contains Aerosol | No |
| Contains Chemicals | No |
| Contains Pesticide/Herbicide/Fungicide | No |
| Contains a Circuit Board | No |
| Contains a Light Bulb | No |
| Contains a Marble | No |
| Contains a Small Ball | No |
| Contains or is a Small Magnet | No |
| Eco Friendly | No |
| Free Flowing Liquid | No |
| Grade | Grade 1+ |
| Has Warranty | No |
| Height (in) | 7.400000 |
| Is a Marble | No |
| Is a Small Ball | No |
| Length (in) | 12.100000 |
| Material | Clay |
| Media Mail Eligible | No |
| Other Hazards | No |
| Package Contains | 25 lbs. of self-hardening Clay |
| Package Count | 1 |
| Registered with WERCS | N |
| Regulated by the US FDA | No |
| Sharp Points or Edges | No |
| Size | 25 lbs |
| Small Parts | No |
| Suitable for Consumption | No |
| Unit of Measure | EA |
| Vendor | AMERICAN ART CLAY |
| Width (in) | 7.800000 |
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|---|---|---|
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Collection: Back to School
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