CE-1– Epoxy for Casting Applications
About the product
CE-1 Epoxy resin system was SPECIALLY FORMULATED FOR WOODWORKING & FURNITURE
- Resin: CE-1A / medium viscosity, high purity liquid epoxy
- Hardener: CE-1B / low viscosity, slow reactivity, ambient curing
- Light colour
- Low viscosity
- Extended working time
- Excellent flexibility and toughness
- Clear castings
- Solvent free coatings
- Decoupage application
- Epoxy tables / furniture
CE-1 Epoxy system user Instructions:
Before using our product please take some time to read the following instructions. Wrong application method will result in faulty epoxy product.
- Prepare the surface you will use your epoxy on by cleaning it from any dust or For more adhesion between epoxy and other material you can sand the contact surface using a low grit sanding paper to roughen it. Make sure that any previous finishes are completely dry before continuing the epoxy application.
- Mix CE-1A and CE-1B together with the ratio of 100:30 by It is advised to empty the containers in a mixing container and the mixing ratio can be assured using a scale. Begin by pouring the hardener slowly into the epoxy resin. As you are pouring use your other hand to stir the epoxy resin. Continue pouring until all of the hardener is gone and use the spatula to scrape the sides. Once the epoxy resin becomes clear and one colour it’s ready to be used. You will have to work quickly.
- For Casting mix mass should be poured into a The mould can be hard or made of silicone rubber. Moulding can be carried out by gravity or under vacuum. It does not trap air easily and does not heat up when used properly. Excessive humidity (above ~65%), low daylight and low temperature (less than 20°C) may retard the curing. Cast system may not work effectively in the monsoon season. Ensure ambient material and workshop temperature is between 20°C and
35°C and humidity level below 65%. Filled mould can also be kept under vacuum to achieve air free components.
- Pot life at 25°C 11-16
- Full cure after 48 hours room
Epoxies are safe when handled properly but it is essential to understand the hazards and take precautions to avoid them.
The primary hazard associated with epoxy involves skin contact. ALCHEMY CHEMICALS Resin may cause moderate skin irritation; ALCHEMY CHEMICALS Hardeners may cause severe skin irritation. Resins and hardeners are also sensitisers and may cause an allergic reaction but, from our experience, most people are not sensitive to ALCHEMY CHEMICALS Resin and Hardeners. These hazards decrease as resin/hardener mixes reach full cure but it is important to appreciate that the hazards also apply to the sanding dust from partially cured epoxy. Please refer to the Material Safety Data Sheets for specific product warnings and safety information.
- Avoid contact with resin, hardeners, mixed epoxy and sanding dust. Wear protective gloves and clothing when handling ALCHEMY CHEMICALS DO NOT use solvents to remove epoxy from the skin. Immediately after skin contact with resin, hardeners, sanding dust from epoxy and/or solvents, use Chemicals Removing Cream for the initial clean-up, followed by a wash with soap and warm water. If a skin rash develops while working with epoxy, stop using the product until the rash completely disappears. If problems persist when work is resumed, discontinue use and consult a doctor.
- Protect your eyes from contact with resin, hardeners, mixed epoxy, and sanding dust by wearing appropriate eye If contact occurs, immediately flush the eyes with water for 15 minutes. If discomfort persists, seek medical attention.
- Avoid breathing concentrated vapours and sanding dust. ALCHEMY CHEMICALS epoxy vapours can build up in unvented spaces and ample ventilation must be provided when working with epoxy in confined areas such as boat When adequate ventilation is not possible, wear an approved respirator.
- Avoid ingestion. Wash thoroughly after handling epoxy, especially before If epoxy is swallowed, drink large quantities of water – DO NOT induce vomiting. Call a doctor immediately. Refer to First Aid procedures on the Material Safety Data Sheet.
- KEEP RESINS, HARDENERS, FILLERS AND SOLVENTS OUT OF THE REACH OF User Manual 5 ALCHEMY CHEMICALS User Manual Back to Contents For additional safety information or data, write to: EPOXY SAFETY, Wessex Resins & Adhesives Limited, Cupernham House, Cupernham Lane, Romsey, Hampshire SO51 7LF
- Contain spills with sand, clay or other inert absorbent materials and use a scraper to collect as much material as Follow up with absorbent towels.
- DO NOT use either sawdust or other fine cellulose materials to absorb hardeners and/or dispose of hardener in waste containing sawdust or other fine cellulose materials— spontaneous combustion may
- Clean resin, or mixed epoxy residue or uncured epoxy with ALCHEMY CHEMICALS 850 Cleaning Solvent. Clean hardener residue with warm soapy
- Dispose of resin, hardener and empty containers safely in accord with local disposal
- DO NOT dispose of resin or hardener in a liquid state. Waste resin and hardener should be mixed and cured (in small quantities) to a non-hazardous inert
CAUTION! Large volumes of curing epoxy can become hot enough to ignite surrounding combustible materials and produce hazardous fumes. Place containers of mixed epoxy in a safe and ventilated area away from workers and combustible materials. Dispose of the solid mass when the cure is complete and the mass has cooled. Comply with the local disposal regulation
- Colouring epoxy resin
Like other resins the general rule is that one can add up to 10% by weight if using a powder pigment, up to 5% if using any other liquid colorant. Similarly, water-based colorants are out, but usually oil or spirit-based are ok, plus of course specially formulated resin colorants which are usually pre-mixed with a small amount of resin.
- Dealing with the bubbles
Careful heating with hair-dryer or heat gun over the open surface of the mixed or curing resin. The heat source should not be too close, in the case of a heat gun about 30 cm away. Another method is to put some methylated spirit in a small ‘mistifier’ bottle and spray a fine mist on the surface. The alcohol doesn’t adversely affect the resin and evaporates quickly, but acts long enough to reduce the surface tension and pop the air bubbles.
- Methods of thinning
Thinning the resin itself could help a lot in the elimination of air bubbles when mixing. It can also help the resin to better impregnate a surface if the resin is being used as a coating, or to make it flow better into a complicated form. Apparently there are a number of ways of doing it, though I can’t vouch for them because I haven’t tried them myself. One method is to heat the resin! Epoxy changes viscosity, becoming thinner when it’s warmed. The recommended
method is to heat up the two parts separately (whichever way you prefer .. but standing the cups in hot water would probably be best) and then mix them. As always, bear in mind that heating will reduce the working time and accelerate the cure. Note also that if using two cups for dosing the resin initially, once warmed both should be decanted into a third cup for mixing together to maintain the ratio. Based on practice the temp should not exceed 115 F (46 C). It is not a very good idea to heat it if you’re pouring a massed volume anyway though, because it increases the risk of the resin overheating with its own exotherm. Another method is either to add acetone (not more than 10% by volume) or methylated at 15-20%. Adding solvent will affect the strength of the cured resin, but this may not matter too much with small castings.