Safety & VaporsWork in a ventilated area and use PPE according to the safety data sheet. For organic vapors, an A2 filter mask is commonly used.
Workshop ClimateA stable temperature around 20–22°C (68–72°F) suits most 2K systems. Cold mixture is thicker and releases bubbles poorly.
Weight vs. VolumeNever confuse weight and volume ratios. Components often have different densities, so 100 ml does not necessarily weigh 100 grams.
Scale AccuracyUse a precise digital scale for small batches. A standard kitchen scale can be dangerously inaccurate for small amounts.
Minimum BatchMixing too little (e.g., under 20g / 1 oz) drastically increases the risk of ratio inaccuracy, and the mixture may not cure at all.
Pot LifeOnly mix what you can process in time. A large volume mixed in a cup cures (and heats up) much faster than a poured thin layer.
Mixing TechniqueMix slowly and thoroughly. Carefully scrape the sides and bottom of the cup where unmixed material often hides.
Two-Cup MethodAfter the first mix, pour the blend into a second clean cup and mix again. This drastically reduces the risk of sticky spots.
Pigments & FillersAdd dyes and metallic powders sparingly (usually max 5-10% by weight). Too much pigment can disrupt curing, alter the mixture's behavior, or increase bubbles.
Waste FactorSome mixture always stays on the cup walls or absorbs into the wood. For most projects, plan for a 5–10% reserve depending on the substrate's porosity.
Wood MoistureWood should be dry and stable, ideally around 8–12% MC depending on the project. Excess moisture causes poor adhesion, cloudy resin, and endless bubbling.
Sealing MoldsResin finds every hole. Carefully seal the mold, corners, through-knots, and cracks (e.g., with silicone or hot glue) before pouring.
Seal CoatWood is porous. A thin seal coat of epoxy brushed onto the edges helps prevent air from escaping and forming bubbles during the main pour.
Bubble RemovalCarefully remove bubbles with a torch or heat gun. Move the flame quickly to avoid burning the surface. Always verify that the material manufacturer allows this.
Pouring in LayersPour thicker sections in stages exactly as recommended by the manufacturer. Never exceed the maximum allowed thickness per layer.
Exothermic ReactionEpoxy generates heat as it cures. Too thick of a layer or a large volume left in a cup can dangerously overheat (boiling, cracking).
Dust ProtectionImmediately cover the fresh surface against dust and insects. Resins and lacquers act as perfect dust traps during their cure time.
Test SampleAlways do a small test pour when using a new brand or expensive wood. You'll verify the color, curing, bubbles, and reaction with the substrate.
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