Casting Resin Using

Unveiling Depth and Clarity: The Complete Guide to Using JANCHUN Casting Resin

When you choose to preserve a flower's delicate beauty, encapsulate a cherished memory, or create a deep-pour river-like landscape, you are not just using a material—you are performing an act of alchemy. JANCHUN Casting Resin is engineered specifically to create thick, bubble-free, and crystal-clear castings, making it the ideal partner for your most ambitious projects. To master this craft, follow our professional guide and unlock the secret to creating deep, luminous art.

Phase 1: Meticulous Preparation – The Foundation of Success

Casting is a dance with time, and preparation is your rehearsal. Do not skip these critical steps.

  1. The Environment is Key

    • Ideal Conditions: Work in a well-ventilated space with humidity below 60% and a stable temperature of 23-25°C (73-77°F). Incorrect temperature and humidity are the primary causes of bubbles, cloudiness (blushing), and improper curing.

    • Level Workspace: Ensure your work surface is perfectly level. Use a spirit level to check. Even a slight tilt will result in an uneven casting.

    • Dust Control: Clean your work area beforehand to minimize dust settling on your piece.

  2. Molds and Release Agents

    • Mold Selection: Use silicone molds designed for epoxy resin, such as those from the JANCHUN collection. They are flexible and allow for easy demolding.

    • Apply Release Agent: Even with new molds, we recommend lightly spraying a mold release agent. This simplifies demolding significantly and extends the life of your mold.

  3. Precise Measurement – The Non-Negotiable Step

    • Golden Ratio: Strictly adhere to the specific weight or volume ratio of Part A (Resin) to Part B (Hardener) indicated on your JANCHUN Casting Resin packaging.

    • Use the Right Tools: Always use a digital scale for measurement. Eyeballing or using volume cups often leads to inaccurate ratios, resulting in a tacky, uncured resin.

    • Pro Tip: Pour Part B into Part A, not the other way around.

Phase 2: Mixing and Coloring – The Art of Creation

This is where you infuse the material with your vision.

  1. Slow and Thorough Mixing

    • Technique: Use a clean mixing stick to stir for at least 5-7 minutes. Use a slow, scraping, "fold-and-lift" motion, ensuring you scrape the sides and bottom of the container. Avoid vigorous stirring, which introduces countless micro-bubbles.

  2. Coloring with Care

    • Compatibility: Only use resin-specific colorants, such as resin dyes, mica powders, or alcohol inks.

    • Moderation is Key: The total amount of colorant should generally not exceed 5-7% of the total resin volume. Excessive pigment can interfere with the curing system and clarity.

    • Two-Step Process: For best results, mix your colorants thoroughly into Part A (Resin) first before adding Part B (Hardener). This ensures even color distribution.

Phase 3: Pouring and Debubbling – The Test of Patience

This phase requires the most finesse and calm.

  1. The Slow Pour

    • Pour the mixed resin into your mold slowly and in a thin stream, along the side or from a single point high above the mold. Avoid pouring from a great height directly into the center, as this traps air.

  2. Deep-Pour? Cast in Layers

    • For castings deeper than 2 cm (0.8 inches), we strongly recommend a layered approach. Pour layers approximately 1-2 cm thick. Allow each layer to cure to a gel-like state (tack-free but still warm) before pouring the next. This prevents excessive heat buildup (exotherm) and potential cracking.

  3. Eliminating Bubbles

    • Primary Tool: Heat Gun. Immediately after each pour, use a heat gun. Pass it quickly and steadily over the surface, keeping it at a safe distance to avoid damaging the mold. The heat lowers the resin's viscosity, allowing trapped bubbles to rise and pop.

    • Secondary Aid: Isopropyl Alcohol: For stubborn surface bubbles, lightly mist the air above the casting with 99% Isopropyl Alcohol and let the fine mist settle. This can help break the surface tension and pop bubbles.

Phase 4: Curing and Demolding – The Reward

Let time complete the transformation.

  1. Dust-Free Coverage

    • Once poured, immediately cover your project with a box or a dedicated dust cover. Resist the urge to move or disturb it for the first 24 hours.

  2. The Patience to Wait

    • JANCHUN Casting Resin will typically be firm enough to demold after 24-48 hours. Note that it is not yet fully cured.

    • Full cure and maximum hardness, chemical resistance, and scratch resistance are achieved after 7 days or more. Only after a full cure should you attempt sanding or polishing.

  3. Gentle Demolding

    • To demold, gently flex and stretch the silicone mold, working your way around the edges to push the casting out. Your patience here is the best tool.

Every casting is an artistic practice of transforming a fluid moment into a permanent heirloom. JANCHUN Casting Resin, with its exceptional low shrinkage, superior bubble-release properties, and unmatched clarity, provides the reliable foundation you need. By following this guide and embracing patience, you will confidently master this captivating medium and create your own profound, crystal-clear masterpieces.

— JANCHUN: Sealing Moments in Time with You.

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