NeuroResin / defects guide
Epoxy resin defects
A practical guide to recognising the most common flaws in epoxy work, understanding why they happen and choosing a safe repair method.
Diagnose a defect from a photo01
Bubbles and pinholes
Usually caused by porous wood, trapped air, high viscosity, aggressive torching or pouring outside the resin’s recommended temperature window.
02
Cloudy or soft resin
Often points to wrong ratio, poor mixing, humidity, incompatible pigment or a layer poured thicker than the system allows.
03
Fish eyes and craters
Most often linked to contamination: silicone, oil, wax, dust, polish residue, fingerprints or insufficient sanding before the next coat.
Prevention checklist
- Seal porous wood before the main pour and allow the seal coat to cure properly.
- Keep resin, wood and room temperature stable; avoid cold material and overheated pours.
- Measure by the manufacturer’s ratio and mix long enough to scrape the walls and bottom of the cup.
- Respect maximum layer thickness, pot life and curing conditions from the TDS.
- Clean surfaces before recoating and run a small compatibility test for finishes or pigments.
Repair logic
Small surface defects can often be sanded, cleaned and recoated. Structural cracks, overheating, flexible spots or uncured resin need a more cautious approach: remove unstable material, verify the cause and only then rebuild the layer. When the defect is unclear, start with the photo diagnosis tool or compare the case with the Polish encyclopedia.
Open the full Polish encyclopedia