How to use CASTINGZ85 Epoxy Resin
May 10, 2022
2. Mixture:
CASTING Z85 is a two-component epoxy resin with a ratio of 3:1.
3. Degas using Vacuum Chamber (Optional):
Most epoxy resins are degassed before application especially for mold casting to avoid bubbles within the finished product. A heat gun may also be used to pop the surface bubbles, but for transparent works this may not be applicable since bubbles trapped within the epoxy cannot be removed unless degassed using a vacuum chamber. CASTING Z85 has a very good air release but bubbles may still be trapped especially after stirring. Kindly read "Special notes for a long term and best quality result no. 7" for more detail recommendation.
4. System Application:
Below is the ideal application system to give the best quality result for any kind of casting project. Different application method may still be applied depending on the desire and good practice of the applicator/user.
Sealing:
CASTING Z85 can be used to seal first the area to be poured or cast. Apply a thin amount using a brush and wait for it to become tacky or dry before applying the actual cast. For small wood casting, stabilizing first to seal all areas may be the best option before the actual casting.
Actual Casting Work:
After mixing the required amount of epoxy resin (and pigments, if mixed with pigments), pour thoroughly. We recommend pausing every 50mm (2 inches) thick of cast to cure before pouring 50mm (2 inches) thick of cast (or lesser) again. This is to prevent stress that may lead to crack the epoxy during curing because of developing exothermic heat; and also for easy curing.
Top Coat:
The top coat is optional depending on your product. Always be sure to sand and clean the surface before applying the hard top coating. SURFACE Z90 may be used as the final coating as it has excellent abrasion resistance.
40 minutes at 25 deg.C (using 100g test sample)
8-10 hours at 25 deg.C or 2 hours at 55 deg.C (using 2g test sample)
Conditions:
70% RH and 25 deg.C
CASTING Z85 features a high adhesion, good fluidity with self degassing properties and can be cured under room temperature or heated for faster curing time. It is also moisture proof, making it best for casting such as specimen preservation, dried flowers as such. When cured, CASTING Z85 is transparent, shines like a clear crystal with no corrugation since it also has very good air and heat release. While SURFACE Z90 has Shore D Hardness of 90, CASTING Z85 has Shore D Hardness of 85 providing good machinability and ease of use. Most cured epoxy resins in the market today has a Shore D of Less than 85.
All Onyx Epoxy Resin's "Z" Series (including SURFACE Z90) are made from non-toxic and tasteless raw materials imported from Germany and Japan, thus producing a very stable non-volatile epoxy resin with zero fumes that are safe for home use. The Median Lethal Dose or LD50 value of Onyx Epoxy Resin is >3000 mg/kg which is the same LD50 value of teaspoon of salt or sodium chloride. Note: Although CASTING Z85 is a safe product, it is still an industrial product, not food and therefore, should never be swallowed. In case this happens, immediately go to the hospital for medical attention.
1. Skin irritation varies from person to person. That is why when working with epoxy resins, always wear protective equipment like gloves, apron, shoe cover rugs, spiked booties or even a disposable coverall to avoid direct skin contact especially when mixing, pouring and spreading on a large work. In case skin contact happens, immediately rub with a clean towel or paper then thoroughly wash with water and soap. Do not clean your skin with cleaning solvents like thinners, acetone, mineral spirits, etc. since these chemicals can penetrate your bare skin.
2. Work in a very well ventilated space and always wear a mask. For poor ventilation and tight working areas, a respirator is required to reduce and/or eliminate any health risk. Some will smell the epoxy resin, some don't. Most people identify the smell as the fumes but they're not the same. Onyx Epoxy Resins are very stable, no VOC or fumes is vaporized during the reaction, but continuous, repeated and long term exposure may still cause irritation to the respiratory tract.
3. Use protective goggles or face shield to keep your eyes safe from accidental contact with epoxy resin especially during sanding. Epoxy resin can cause eye irritation and swelling. In case this happens, don't rub instead continuously wash with running water for 15 minutes and seek medical attention immediately.
4. Do not swallow this product. Immediately seek medical attention if this happens.
5. Test this product with a small amount of mixture first to minimize mistakes during the actual work.
6. Keep out of reach of children.
Storage and Shelf Life:
1. Store in a clean and dry place best with a temperature between 8-25 deg.C.
2. Keep away from high humidity, hot environment and direct sunlight.
3. Recommended to use after opening to keep the quality.
4. Shelf life is 12 months at 70% RH and 25 deg.C.
1. The finish product quality and the aesthetic results always rely on the workmanship of the applicator. Although all recommendations within this website goals to achieve the best product results, unforeseen circumstances may still arise and affect the end quality. And since every project is special on their own, the use of these products may have different results or even fail to deliver as presented within this website.
2. You accept and fully understand that using this product involves risks that include but not limited to skin and eyes irritation, respiratory health risks, serious physical injury and even death.
3. You are buying, using and/or selling this product as is where is and as claimed on this website with no guarantee and warranty.
4. This website strives to provide helpful contents and advance information for the use of these products including safety precautions, good work practices and proper product mixture, but Onyx Epoxy Resin as a company, vendor, product and brand makes no claims, promises, or guarantees about the accuracy, completeness, or adequacy of the contents of this site, and expressly disclaims liability for errors and omissions in the contents of this site. Any action you take upon the information from this website is strictly at your own risk and Onyx Epoxy Resin is not liable for any losses, damages in connection with the use of this website and information written herein.
5. Onyx Epoxy Resin does not accept returns or exchanges after a transaction has been settled (a settled transaction is when you already received the item and Onyx Epoxy Resin already received the payment) unless the item you purchased is unusable because the packaging is broken (or leaked) during the delivery or already hardened because of improper storage. If you received an item that falls within these two categories, please contact Onyx Epoxy Resin immediately to replace your item.