How to Apply Masking Tape for Curves on Model Kits

Quick Answer

To apply masking tape for curves on model kits, use a flexible tape like Tamiya's 12mm Masking Tape for Curves and apply it in short, overlapping sections while pressing firmly along the edge to prevent paint seepage.

Step-by-Step: Masking Curves on Model Kits

1. 1. Clean the Surface: Wipe the area with a lint-free cloth or isopropyl alcohol to remove dust, oils, and residue. Any debris under the tape will cause paint to bleed. A clean surface is the most overlooked step—skipping it guarantees uneven edges.
2. 2. Cut Tape Strips for the Curve: Use curved masking tape (like Tamiya 12mm) and cut strips about 1–2 inches long. For complex patterns, use the Maste Slicer V to cut multiple thin strips at once. Avoid using one long piece—it will crease. Short strips follow curves better than a single long piece.
3. 3. Apply the First Strip at the Center: Place the center of the strip on the curve's apex and press down lightly. Then work outward to the ends, pressing the tape down in small increments. This prevents air bubbles and wrinkles. Starting at the center distributes tension evenly.
4. 4. Overlap Each Subsequent Strip: Lay the next strip so it overlaps the previous one by about 1–2 mm. Continue around the curve, overlapping each strip. This creates a continuous seal that paint cannot penetrate. Overlapping is critical—gaps invite paint seepage.
5. 5. Burnish the Edges: Use a burnishing tool (or the back of a toothpick) to firmly press the tape edges against the model. Pay extra attention to the inner and outer edges of the curve. A loose edge is an open door for paint. Burnishing seals the tape to the plastic—don't skip this step.
6. 6. Paint and Remove Promptly: Apply your paint in thin, even coats. Remove the tape while the paint is still slightly tacky (or fully dry, depending on your paint type—check the manufacturer's instructions). Pull the tape back over itself at a 45-degree angle to avoid lifting the paint edge. Removing tape too early or too late can damage the paint line.

Recommended Products

• Masking Tape for Curves 12mm 87184: This 12mm masking tape is designed for smooth, secure masking of curved lines where standard tape would crease and let paint seep underneath. It is the widest option in the Tamiya range. The 12mm width covers larger curved sections in fewer passes, reducing the chance of misalignment and saving time on complex paint schemes.

  

• Maste Slicer V: The Maste Slicer V is a compact cutter that can produce multiple shredded masking tapes at once using up to five blades, reducing the effort of cutting tape for elongated lines, complicated patterns, and curves. If you often mask intricate curved patterns, this tool lets you prepare consistent thin strips quickly, so you can focus on placement rather than cutting.