- Ensure the surface is clean, dry, and free of rust, oil, grease, wax, loose paint, or dirt.
👉 Roughen the area with sandpaper (e.g., P80–P120 grit) for better adhesion. -
2️⃣ MIXING PUTTY & HARDENER
🧪 Mix Ratio:
• Putty : Hardener = 100 : 2–3 parts by weight✔ Place the desired amount of putty on a clean mixing board.
✔ Add 2–3% catalyst/hardener (by weight).
✔ Mix thoroughly until a uniform color & texture is achieved — no streaks.







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