Uni-Mould Mould Making System

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Uni-Mould Tooling Gelcoat 1kg

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Product Description

Uni-Mould Tooling Gelcoat is part of the Uni-Mould™ universal mould making system and should be used in conjunction with Uni-Mould Coupling Coat and Uni-Mould Tooling Resin to produce hard-wearing, polishable moulds of any size with zero shrinkage suitable for use in just about any composites process

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or full details on the Uni-Mould system, read our Uni-Mould Introduction and Application Guide.

Uni-Mould Tooling Gelcoat is a filled, vinylester tooling Gelcoat compatible with epoxy, polyester and vinylester resin systems meaning that parts made using any of these resin systems will reliably release from moulds made with a Uni-Mould Tooling Gelcoat surface.

Moulds made using Uni-Mould are fully compatible with all widely used resin systems (including epoxy, polyester and vinylester).

Requires MEKP catalyst (not included)

Suggested Purchasing Quantities

Use the table below to help you purchase suitable quantities of the resins and glass for a given mould size.

Uni-Mould ResinChopped Strand Mat
The table is NOT an exact guide to the ratios of the materials but is rounded up to the nearest purchasable pack size or weight of mat.
Mould Area Tooling Gelcoat Coupling Coat Tooling Resin 80g CSM 450g CSM
0.6sqm 1kg 1kg 5kg 2sqm 2kg
3.5sqm 5kg 5kg 25kg 7sqm 7kg
13sqm 10kg 25kg 100kg 26sqm 25kg

Application

Uni-Mould Tooling Gelcoat should be catalysed at 1.5-2% using standard MEKP catalyst (not included). Before application allow the catalysed Gelcoat to stand for a few minutes to settle and de-gas.

The vinylester gelcoat should be applied in two applications. For the first application aim for a consistent thickness of 0.3–0.4mm. Allow the first application to cure for around 2-3hrs (at 20°C room temperature) before applying the second coat of Gelcoat, again aiming for a thickness of 0.3 - 0.4mm.

Allow the gelcoat to cure for a minimum of 4hrs (at 20°C room temperature), preferably overnight.

Uni-Mould Tooling Gelcoat should then be backed up with Uni-Mould Coupling Coat and Uni-Mould Tooling Resin as per the guidelines for those products.

Use with Prepregs

Although it is possible to use Uni-Mould moulds with out-of-autoclave (oven cure) prepregs (such as XPREG® XC110) we no longer recommend Uni-Mould moulds for this purpose.

Instead – for prepreg use – better results will be achieved using high temperature epoxy moulds made using our EG160 / EMP160 tooling system or XPREG® XT135 Tooling Prepreg. These high temperature epoxy tooling systems allow the prepreg to be cured at the optimum 120°C which reduces the cure time and improves the mechanical properties of the component. Additionally, epoxy tools have been found to result in a better surface finish with prepregs such as XPREG® XC110.

Compatibility Information - Dos and Don'ts

Although by no means an exhaustive list, the Pattern materials, release agents and additives listed below have all been tested and are known to work well with Uni-Mould Tooling Gelcoat.

Compatible PatternsCompatible Release AgentsCompatible Additives
  • Pattern Coat Primer
  • Pattern Coat High Gloss
  • Epoxy and Polyester resin based patterns (with suitable release agent)
  • Polypropylene and polyethylene sheet
  • Aluminium (with suitable release agent)
  • Toughened Glass (with suitable release agent)
  • Easy-Lease Chemical Release Agent
  • PVA Mould Release
  • No 8 Mould Release Wax
  • Solution MW Wax Additive

Key Processing Information

Ease of Use

Suitable for professional and hobby use (follow SDS advice).

Odour

UMTGC has a strong styrene based odour.

Safety Precautions

Wear gloves and goggles and work in a well ventilated area. Always read the SDS before use.

Ambient Conditions

Can be used from 15 to 30°C although pot-life and cure time will be affected significantly. Recommended working at an ambient of 20-25°C.

Degassing

Not necessary in most cases. Simply mix and use.

Mix Ratio

Add MEKP Catalyst at a ratio of 1.5 - 2%. Use digital scales.

Mixing

Mix thoroughly by hand for at around 2 minutes.

Application

Can be applied by brush. Coating thickness 0.3 - 0.4mm. Minimum of two coatings recommended.

Pot-Life

The pot life at 25°C is 15 minutes. Be sure to use your resin before this time.

Exotherm (Over-Heating)

Resin will heat-up whilst it cures. Mix in small batches and use expediently. Mixed resin in a pot will quickly overheat (exotherm) and can smoke/ignite. Never leave mixed resin unattended.

Cure Time/Demould

At 20°C allow the gelcoat to cure for a minimum of 4 hours, preferably overnight before backing with Coupling Coat.

Overcoating / Second coatings

We recommend 2 coatings of 0.3 - 0.4mm per coating for best results.

Maximum Service Temperature

When fully cured and post cured, the maximum Service Temerpature of Uni-Mould moulds is 90°C

Shelf Life

Uni-Mould tooling gelcoat has a shelf-life of 4 months.

Pack Sizes

The Uni-Mould TGC is available in 3 different pack sizes: 1kg, 5kg and 25kg. Please choose the pack size required from the drop-down list at the top of the page.

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Uni-Mould Tooling Gelcoat 1kg

Uni-Mould Tooling Gelcoat 1kg

Product Description

Uni-Mould Tooling Gelcoat is part of the Uni-Mould™ universal mould making system and should be used in conjunction with Uni-Mould Coupling Coat and Uni-Mould Tooling Resin to produce hard-wearing, polishable moulds of any size with zero shrinkage suitable for use in just about any composites process

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