Frequently Asked Questions
Here are some common questions our technical support team receives.
About the Brand
Fenkraft Resin is a premium brand dedicated to providing high-quality epoxy resin systems for artists, crafters, and professionals. Our focus is on offering specialized formulations that ensure exceptional clarity, durability, and ease of use for a wide range of creative and functional applications.
Our resins are proudly formulated and manufactured in Meerut (uttar pradesh ) under strict quality control standards.
Our resins, when used as directed, are designed to be safe for crafting and artistic purposes. We strongly recommend always wearing appropriate Personal Protective Equipment (PPE), including nitrile gloves and safety glasses, and working in a well-ventilated area. Please refer to the Safety Data Sheet (SDS) for each product for detailed safety information.
Resin Lust (2:1) – Medium Viscosity Epoxy Resin
The precise mix ratio for Resin Lust is 2 parts Resin to 1 part Hardener by weight (2:1 by weight). It is critical to measure accurately using a digital scale for optimal curing and performance. Do not measure by volume.
Resin and hardener components often have different densities. Measuring by weight (using a digital scale) ensures the most accurate and chemically balanced ratio, which is essential for a complete, hard, and non-tacky cure.
Stir slowly and thoroughly for 3–5 minutes. Scrape the sides and bottom of your mixing container multiple times to ensure the components are fully incorporated. Avoid aggressive stirring to minimize introducing air bubbles.
The working time, or 'pot life,' for Resin Lust is approximately 45–50 minutes at room temperature (∼25∘C/77∘F). This allows ample time for coloring, pouring, and manipulating your design. Note: Larger batches will reduce the working time due to the exothermic reaction.
Resin Lust will be tack-free and ready to demold in approximately 15–16 hours. It will achieve a full, hard cure within 7 days. Avoid placing heavy objects or sanding the piece before the full 7-day cure.
The ideal temperature for your workspace, resin, and mold is between 23∘C and 27∘C (73∘F and 81∘F). Colder temperatures will significantly increase the curing time and can cause cloudiness or other curing issues.
Resin Lust's medium viscosity makes it ideal for:
- Top Coating: Creating high-gloss, durable finishes on art, tables, coasters, and canvases.
- Small Castings: Projects such as jewelry, keychains, and small silicone molds up to 10mm (approximately 3/8 inch) thickness per layer.
No. Resin Lust is a medium-viscosity coating/casting resin and is limited to a maximum pour depth of 10mm per layer. Pouring thicker than the recommended depth will cause excessive heat (exotherm), resulting in bubbles, cracking, yellowing, and potential damage to the piece. For deep pours, please use a dedicated deep-pour epoxy like our Resin Trench slow-cure system.
Yes. Resin Lust is formulated to be moisture-free (reducing potential cloudiness) and cures with virtually zero shrinkage, maintaining the integrity and dimensions of your finished casting or coating.
Troubleshooting
Bubbles can be minimized by:
- Stirring slowly to avoid whipping air into the mixture.
- Warming the resin bottles slightly before mixing (ensuring they are still within the recommended temperature range).
- After pouring, gently pass a butane torch, heat gun, or straw over the surface to pop any remaining bubbles. Keep the heat source moving and do not linger in one spot.
This is almost always due to inaccurate measuring or insufficient mixing.
- Ensure you used a digital scale to measure the 2:1 ratio precisely.
- Confirm you scraped the sides and bottom of the container during the 3–5 minute mixing time.
- The ambient temperature may be too low. Move the piece to a warmer environment (∼25∘C) to see if it finishes curing. If it remains tacky after 24 hours in a warm environment, it is likely a mixing error.
A soft or flexible cure indicates an issue with the chemical reaction, most commonly:
- Inaccurate Ratio: Even a small deviation from the precise 2:1 (Resin: Hardener) by weight ratio can prevent a hard cure. Always measure with a dedicated, accurate digital scale.
- Improper Mixing: The resin and hardener were not fully integrated, leaving unmixed parts that cannot cure properly. Ensure you scrape the mixing container walls and stick multiple times.
- Contamination: Water, alcohol, oil, or even certain colorants (especially water-based ones) can contaminate the mix and interfere with the chemical reaction, leading to a soft cure. Ensure all molds and additives are completely dry.
This "blushing" or cloudiness is typically caused by moisture contamination or low temperature:
- Moisture/Humidity: High humidity in the workspace, or water residue in the mold, can react with the hardener component. Always work in a low-humidity environment and ensure all surfaces are dry.
- Low Temperature: If the curing temperature drops too low (below 20∘C or 68∘F) during the curing phase, the reaction can slow down, trapping moisture and potentially leading to a hazy finish. Maintain a consistent warm temperature for the full 15-16 hours.
"Fish eyes" (circular areas where the resin pulls away) are usually caused by surface tension issues on the substrate you are coating:
- Contamination on Surface: Oils, dust, silicone residue, wax, or fingerprints on your canvas or wood surface will repel the resin. Ensure your substrate is meticulously clean and wiped down with a product like isopropyl alcohol (IPA) that leaves no residue.
- Moisture or Silicone in Resin: If your mixing container or stirring stick has residual silicone from another project, it can spread throughout the resin and cause repelling. Use dedicated, clean tools for every mix.
While Resin Lust is formulated for clarity and UV resistance, there are a few reasons for immediate or accelerated yellowing:
- Exceeded Pour Depth: If you exceeded the 10mm limit, the extreme heat (exotherm) will instantly "cook" the resin, causing it to yellow, crack, and potentially smoke.
- Overheating: Applying a torch or heat gun for too long in one area can cause localized burning and yellowing. Always keep the heat source moving swiftly across the surface.
- Expired or Improperly Stored Product: While unlikely with new stock, heat and light exposure over time can accelerate the natural aging/yellowing process. Store your Fenkraft Resin in a cool, dark place away from direct sunlight.
Resin Infinite (3:1) – Low Viscosity Casting Resin
The precise mix ratio for Resin Infinite is 3 parts Resin to 1 part Hardener by weight (3:1 by weight). It is absolutely critical to measure accurately using a digital scale for optimal curing and performance. Do not measure by volume.
Resin Infinite is formulated as a deep casting resin, recommended for single-layer pours up to 1 inch (25mm) depth. The low viscosity and extended working time are engineered to prevent excessive heat buildup (exotherm) at this depth. For projects deeper than 1 inch, we recommend pouring in multiple 1-inch layers, allowing each layer to cure to the tacky stage before pouring the next.
Resin Infinite offers an extended working time of approximately 120 minutes (2 hours) at room temperature (∼25∘C/77∘F). This long pot life is ideal for large projects like river tables and allows ample time for bubble release and material manipulation.
Due to its low viscosity and slow curing properties (which minimize heat and allow for deep pours), Resin Infinite is typically tack-free within 48 hours. Full, structural cure is achieved in 7 days.
Low viscosity (thin consistency) is crucial for deep pours because:
- Excellent Bubble Release: Thinner resin allows air bubbles to rise and escape more easily before the resin begins to set, resulting in a bubble-free finish.
- Reduced Exotherm: Low-viscosity/slow-curing formulations generate heat much slower, which is essential for pouring large volumes safely without the resin cracking, yellowing, or boiling.
Resin Nova (2:1) – High Viscosity Art Resin
Resin Nova has a thick, honey-like consistency which prevents colors from spreading too quickly or blending completely. This is essential for:
- Creating crisp, defined ocean lacing (waves).
- Building layered textures and cells in geode art.
- Allowing artists to push the resin without it immediately flowing off the canvas.
Resin Nova is our fastest curing resin:
- Working Time: Approximately 15 minutes. This short pot life is needed for artists who rely on quick thickening to achieve texture and hold detail.
- Curing Time: Tack-free and ready to handle in 5–6 hours.
Yes, but be quick! Due to its fast-curing nature, heat accelerates the process significantly. Use a torch or heat gun gently and swiftly to pop bubbles or manipulate wave cells. Excessive heat will drastically shorten the already brief 15-minute working time.
No. Resin Nova is designed for thin layers (∼5mm) on flat surfaces. Its fast cure and high viscosity will cause extreme heat (exotherm) if poured too thickly, leading to rapid yellowing and cracking. For jewelry or small molds, use the medium viscosity Resin Lust (2:1)