Gruber Systems offers two types of mold construction for use in cultured marble, or solid surface casting (manufacturing) applications. Each uses a different gelcoat technology. Before ordering a mold from Gruber, you should consider which gelcoat finish you prefer:

• Metamold Gelcoat
• Vinyl Ester Gelcoat

Metamold or Vinyl Ester Molds - which is right for you?

Any mold ordered must have the type of construction specified on the part number

To order MetaMold mold construction, add an "M" to the end of the part number

Metamold™ Construction

Metamold is the preferred choice for demanding applications where durability is the key consideration. For only a small cost difference, you get the highest performance gelcoat material on the market for solid surface and cultured marble casting. In fact, Metamold is the ONLY choice recommended by Gruber for solid surface production due to its ability to handle higher exothermic temperatures created with solid surface material processing. The distinctive grey metallic color identifies Gruber’s proprietary gelcoat and the Metamold option. This metallic composite surface, combined with state-of-the art lamination techniques and specialized box construction, is an option you will want to include on all of your Gruber mold orders.

Metamold Advantages:

Metamold’s metallic composite gelcoat provides greater surface strength. Greater surface strength means the original high gloss finish is retained longer.

• Makes product release and demolding less time consuming.
• Lowers surface tension thus reducing crazing.

• Suitable for high exotherm temperature applications.
• Ideally suited for non-gelcoated Granatex 500 applications.
• Provide extended mold life.
• Save time.

LIMITED WARRANTY:

This mold is warranted to be free of any manufacturing defects. When used in accordance with these instructions and recommended materials and processes, this mold should produce hundreds of cast polyester castings of high quality. This warranty expressly does not include damage caused to the mold because of gelcoat or matrix that sticks to the mold. (This is a function of the mold preparation and release system used.) No other warranty, expressed or implied, is assumed nor will be assumed.

Vinyl Ester (VE) Gelcoat

• VE is lower cost than Metamold (approximately 15% typically)
• VE is helpful in areas where lower production volume (duty cycle) is expected.
• VE can be used in applications where the mold surface finish is not as critical - such as for female molds.
• Because VE creates a more flexible surface compared to Metamold, molds subjected to twisting or bending may be better suited to VE construction.
• The same release agents that are used with Vinyl Ester are used with Metamold - so you can use a single release systems for both options.

LIMITED WARRANTY:
This mold is warranted to be free of any manufacturing defects. When used in accordance with these instructions and recommended materials and processes, this mold should produce hundreds of cast polyester castings of high quality. This warranty expressly does not include damage caused to the mold because of gelcoat or matrix that sticks to the mold. (This is a function of the mold preparation and release system used.) No other warranty, expressed or implied, is assumed nor will be assumed.

Ordering a new Gruber Mold:

All molds are pre-conditioned with MR polymer mold release:
o Pre-conditioning allows molds to be placed into production in less time than conventional molds.
o Read our New Mold Break-In instructions carefully to reduce time consuming difficulties and increase mold life.