Epoxy resin for encased metal

Clear epoxy resin for casting and encased objects. Suitable for applications of 1 to 3 cm in thickness.

Crystal clear resin with glaze effect. Suitable for encased objects. Coloured resins available. For professional users and manufacturers.
The medium thickness resin has been developed for castings of 1 to 3 cm in thickness. It is suitable for casting or molds on large surfaces of interior design projects. The key features of this resin are the crystal clear color and thicker glaze effect when compared to the low thickness resin. This effect give a greater sensation of depth. The polymers included in this formulation are resistant to UV rays and therefore are low yellowing. To assure a good resistance to yellowing with this level of thickness, the formulation includes extra UV filters. As a result, the characteristic of the resin provide a more durable and high performing product. Surfaces finished with this professional resin are suitable for interior use only.
This resin can be colored or tinted by using specific translucent colors developed by Cromas. There are endless possibilities to create a surface similar to colored glass:
• translucent and coloured surfaces
• semi-transparent surfaces, like colored glass
• crystal clear surfaces

Unlike resins for basic castings used by private customers, Cromas Paints has developed these resins specifically for professional use. In fact, they are very different from other products because of these key features.
• A Low Viscosity and is Balanced – the material is self-leveling at low thickness
• A high resistance to Carbonation – the reaction of the resin hardener with the air and humidity that can cause defects in the surface
• Resistant to UV rays and is Low Yellowing
• Calculated Mass Effect – the temperature rise of the curing resin

Through the research and development of this resin, Cromas was dedicated to formulate this product with the highest quality fetures and good resistance to yellowing. We accomplished this by using custom UV filters to reduce yellowing. Moreover, the Mass Effect has been calculated on surfaces commonly used in furnishing and interior design, for which the resin has been formulated. Due to the amazing transparancy of this resin, many small objects can be encased or inserted into a resin of 2 cm in thickness. This includes metal objects that have the potential to expand as the heat rises during curing.

General and important information about resin application techniques
Once the resin is fully hardened, the surface looks like a single thick surface that is shiny and seamless. The higher thickness gives an increased resistance and durability to the surface. When testing the resin, it is suggested to wait 10 days after applicaiton to allow full cross-linking and curing of the resin. The performance of the resin is comparable to Plexiglass or other clear plastic materials.

Because this type of resin is thick, we advice to pour the resin into molds or forms made of a material that allows detachment (i.e. PE, PP, Plexiglass).

After the resin has fully hardened, it can be polished just like any common lacquered acrylic, polyurethane or polyester material. When polishing, it is important not to heat the resin surface too much with the polishing machine. An excessive amount of heat from polishing can lead to a temporary softening of the suface, and making it harder to polish. This problem can be solved through the application of clear acrylic after sanding with a 500/1000 grit sandpaper.

For applications with inserted objects such as untreated wood with open pores, it is necessary to seal or insulate the material first. As an alternative to common insulating products, apply 1 or 2 layers of epoxy insulating resin or sealer to achieve excellent results. Best results are obtained by using a high-viscosity insulating product (specifically studied by Cromas) applied with a brush or spatula.

Our medium thickness resin has been specifically formulated for castings on flat surfaces, because our resins are self-leveling and spread by themselves. The surface must be checked with a level before the pouring of the resin. This step is of maximum importance for applications of high thickness resins.

Ricordiamo inoltre come questa resina è sviluppata unicamente per applicazioni a colata su superfici piane, dove queste resine autolivellanti si stendono autonomamente. E’ molto importante che il piano da trattare sia verificato con la livella, il requisito è più stringente man mano che lo spessore della colata diventa più alto.

The expected cure time of the medium thickness resin is of 24-48 hours. After this time, the resin can be detached from the mold. Times may vary due factors such as the environment temperature, the mass of the resin, and the thermal conduction of the encased objects.

Application of the medium resin with 3 cm to 4 cm in thickness should not be applied on a large surface with a total mass over 5-6 kg. For applications at higher masses, we advise to use the Cromas high thickness resin. The encasing of heavier or more dense objects should be inserted into a medium thickness resin. This type of casting does not create any problems and the surfaces does not experience cracks. It is important to understand that the resistance to yellowing is lower when the casting is on big surfaces..


And finally, more general information to help you be successful with your resin projects. The process of pouring resin is a simple process and can lead to beautiful results. But the use of a resin with encased objects needs to be tested. Materials such as wood and metal can cause some working problems because some materials can move in the mixture or change in size due to temperature variations during curing. Normally metal expands as it gets warm and becomes smaller as it gets colder. Problems can also happen when the resin mass is too large and it creates an excessive heat reaction and yellowing.

In winter, the application process of the resins must be carried out in a warm work environment. The recommended temperature during the curing or hardening time is at least 20° C. At lower temperatures, the curing time increases and some imperfections may appear on the surface. The recommended temperature during working time is 25°C and the temperature should remain the same during the hardening time. It is advised not to store the resin in a cold area during winter.

It is also suggested that the surface material, the encased items, and the working environment not be too humid. This is because too much moisture in the air or in the encased items can react with the mixture and cause defects. In order to assure the resin has good resistance to Carbonation, it is important that the working environment and items to be encased are moisture free.

The importance of pre-production testing
Our medium thickness resin offers ease of application with consistant good results if made by an experienced technician. When using the resin for the first time, it is necessary to proceed with testing. We advise to begin using the resin in the production process only after complete testing. This provided information comes from our direct experience. Because there are many factors to consider, we always advise to proceed with product testing in a controlled working environment and using the same materials.

The results can vary according to the products to be encased or how the materials are prepared for the casting. Cromas Paints goal is to give you the most useful information so your projects are successful.

If you have any other question feel free to ask us, by the form or at info@special-paints.com

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