Clear epoxy resin for molds. Medium thickness for encased small objects

Medium Thickness Transparent Epoxy Resin

Medium Thickness Epoxy Resin for Moulds 1-3 cm Deep

When your project requires a crystal clear or color tinted, glass-like effect, our Medium Thickness resin is the optimal solution. Unlike the Low Thickness resin that is meant to thinly cover a surface, the Medium Thickness resin creates a deeper visual sensation with a high gloss finish.

When the surface is cured, the product features high durability, low yellowing, and good UV resistance over time. This resin is for indoor use only.

 

 

The Cromas resins can also be colored with specially developed epoxy-based dyes. These dyes allow the resin to be colored in bright and intense hues or in dark and moody tones while still maintaining the transparent appearance.

The resin allows various small objects up to 2 cm in thickness to be inserted into the resin. Even metallic materials can be encased because the low heat curing temperature of the resin in not high enough for the metallic objects to expand and crack the resin.

Cromas resins were developed with professional characteristics including:

  • Low Viscosity and Balanced – the material is self-levelling
  • High Resistance to Carbonation – this is the reaction between the resin’s hardener with the air and humidity that can cause defects in the surface
  • Low Yellowing and suitable for indoor use only
  • Calculated Mass Effect – the temperature rise during the curing time – tested on common furniture surfaces
  • Highly Durable Finish that can be sanded and polished for a perfectly smooth surface

Application Information

  • A solid and level frame or a silicone mould is needed to hold and shape the resin while pouring
  • Once the resin is fully hardened after about 24 to 48 hours it turns into a very hard, high gloss surface that resembles real crystal
  • For applications with porous items such as wood, it is necessary to seal or insulate the material first. This is so any humidity or moisture can not escape into the resin causing bubbles during the curing process
  • To seal a surface, apply several layers of the Cromas epoxy resin or sealer. We suggest to use a high-viscosity insulating product that is applied with a brush or spatula
  • The medium thickness resin applications commonly have a cure time of 24-48 hours at a temperature of 20-25° C
  • The resin mixture has a low viscosity so the air bubbles can evaporate during curing for a perfect finish. After the Medium Thickness resin has fully cured, it can be modified, sanded, and polished to create the desired product or surface
  • When polishing, it is important not to over-heat the resin surface because too much heat from polishing can lead to a temporary softening of the surface which makes polishing more difficult. This problem can be solved through the application of clear acrylic after sanding with a 500/1000 grit sandpaper

 

For moulds that are small to medium in size, the surface area is very important to the success of the project.

  • A resin pour on a medium or small surface area should have a total mass of 5 to 6 kg to control the Mass Effect
  • For a larger surface area, the resin thickness should be lower and multiple resin layers can be applied
  • For a smaller surface area, the resin thickness can be higher
  • Following this information will control the Mass Effect or the amount of heat from the curing reaction because if there is too much heat during the curing process, defects can occur

For moulds that are larger in size, it is recommended to use our High Thickness Transparent Epoxy Resin for moulds 4-10 cm deep.

And lastly, the Medium Thickness resin can also be poured over a flat surface because it is a self-levelling resin. When pouring this resin, it is important that the surface is level so the resin thickness is equal in all parts of the surface.

Application Notes

The process of pouring resin to make a glass-like effect is not a difficult process. But when you add encased objects, this needs to be tested to understand the results.

Materials such as wood and metal can cause some problems in the curing resin. For example, wood can move in the resin or cause air bubbles if not completely insulated and metals can slightly change in size due to temperature variations during curing.

The application process of the resins must be carried out in a warm work environment. The recommended temperature during the mixing, pouring, and hardening processes should be about 25° to 30°C. At lower temperatures, the curing time increases and some imperfections may appear on the surface.

It is also suggested that the surface, the encased items, and the working environment do not have too much humidity. This is because humidity in the air and moisture in the objects can result in a reaction called Carbonation that can cause defects in the resin.

Pre-Production Testing

 The application process of casting, pouring the self-levelling resin, or encasing objects in epoxy resins is not difficult, but we recommend to carry out testing of the resin with the materials to be used in the process. This is to develop a standardized application process and to understand the variables related to your working environment, the resin thickness, and the materials embedded in the resin. All of these factors can have an effect on the quality of the dried resin.

Cromas Paints goal is to give you the most useful information so your projects are successful. The provided information comes from our research and testing 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.

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You can also contact us here: info@cromaspaints.com | Tel: +39 0331 877427

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