High Thickness Castings from 4 cm to about 10 cm. Ideal for Encased Objects, Low Heat Reation During Curing. Developed for Professionals and Companies
The high thickness resin is different from the low or medium thickness resin. The high thickness can be used in casting from 4-10 cm in thickness. This crystal clear epoxy resin has greater depth for a deeper glass-like effect.
The result is a surface with a greater perception of depth that is also crystal clear in its appearance.
Once fully cured, this product show low yellowing because the raw materials have good UV resistance. Surfaces treated with this type of resin are suitable for outdoor use.
Cromas Paints has many years of scientific experience in producing special effect paints, so we have developed our epoxy resins for professional applications. Many other resins are intended for the private customer.
The Cromas resins were developed with these professional characteristics:
- Low Viscosity and Balanced – the material is self-leveling at low thickness
- 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 – it is suitable for outdoor use
- Calculated Mass Effect – the temperature rise during the curing time – tested on common furniture surfaces
- Highly Durable and can be sanded and polished for a perfectly smooth surface
High transparency epoxy resin in high thickness castingCrystal clear epoxy resin for high thickness with various encased materials. Resin mass of 9 kg and 5 cm in thickness
Highly transparent epoxy resin for high thickness wood moldsHigh thickness, crystal clear epoxy resin, many applications with wood
High thickness epoxy resin molds with encased metallic objectsTransparent epoxy resin for high thickness molds with embedded metal objects
It’s available this video-tutorial where the realization of a 5cm thick casting is explained step by step:
This resin is unique because it has a very low heat curing reaction. Unlike the Low and Medium thickness resins that develop more heat during the curing time. A low heat curing reaction in a high thickness resin is important because it allows different materials to be inserted into a resin with a good result. To be most successful with the application, the temperature of the working and curing room should be warm.
General and Important Application Information
Once the resin is fully hardened it becomes a unique glossy surface that is more durable and features a higher resistance than common lacquers due to the thickness. A frame or silicone mold is needed to hold and shape the resin while pouring. The mix has a low viscosity so the air bubbles can evaporate. The cured resin is then removed from the mold when dry.
Mixing of the epoxy resin before pouring in a moldMixing of the epoxy resin before pouring in a high thickness mold
How to pour epoxy resin into a high thickness castingPouring the epoxy resin into a mold to make a high thickness casting
Inserting items into high thickness epoxy resinInserting wood and metal objects into high thickness epoxy resin
Final layer of high thickness epoxy resin with encased objectsFinal layer of high thickness epoxy resin with encased objects, make sure the inserted itmes do not to move
After the high thickness 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 with a brush or spatula to achieve excellent results.
The low thickness resins were designed for pouring on flat surfaces like standalone casting projects. These are called self-leveling resins. When pouring this resin, it is important that the surface is level so the resin thickness is equal in all parts of the surface.
The high thickness resin applications commonly have a cure time of 48-72 hours at a temperature of 20-25°C. Given the low heat curing temperature rise of this resin, we advice to keep the room temperature at 25°C during working time. This is to avoid imperfections anc cause an increased curing time. This is true when working with total mass under 5 kg. We advice against using a high thickness resin for low thickness project because the curing time will be longer and the surface will not be uniform.
Given the high thickness of the application, the temperature rise during curing or Mass Effect must be kept under control as they determine the finish quality. For encased materials that are porous and may contain water or humidity – if the material is not well sealed or insulated – the wood material can create air bubbles from the heat of the curing resin.
Check the temperature of epoxy resin during pouringCheck the epoxy resin temperature with a laser thermometer during hardening
Air bubbles in the resin due to not sealed woodImportant to correctly insulate wood and other pourous materials to avoid air bubbles
This resin can incorporate any material as long as the surface is properly insulated or sealed so that no air, water or humidity can escape. Even wood and metallic materials – usually they are harder to work with – can be encapsulated without problems in this type of resin.
In winter, the application process of the resins must be carried out in a warm room. The recommended temperature during the curing or hardening time is at least 25° C. At lower temperatures, the curing time increases and some imperfections may appear on the surface.
It is important that the surface material, the inserted items, and the working environment not be 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.
During the winter time, it is important to store the resin in a warm area.
For best results, the recommended temperature during application and curing time is 25°-30°C.
The Importance Of Pre-Production Testing
The application process of pouring the resin into molds, pouring as self-leveling, or encasing objects in the epoxy resins is not difficult, but we suggest to do some testing to develop your standardized application process especially if there is no previous experience with resins.
Cromas Paints goal is to give you the most helpful information so your resin projects are successful. The provided information comes from our research and experience. Because there are many factors to understand with a resin project, we always advise to start with testing in a controlled working environment and using the same materials.