Painting

Primer Application for 3D Prints

To prepare prints for painting, begin with a flat gray primer or primer filler. Ensure parts are fully assembled, sanded smooth, and free of debris. Use compressed air or a powerful blower to remove residual dust.

Application Process:

1. Environment: Work in a well-ventilated outdoor area or spray booth with a protective tarp.

2. Spray Technique: Apply a light, even coat from 6–12 inches away to avoid drips.

3. Drying Time: Allow 2+ hours for the primer to cure before painting.

Primer Filler Advantages:

• Surface Refinement: Sand after drying (e.g., 800–1200 grit) to eliminate minor imperfections.

• Multi-Step Smoothing: Apply primer filler, sand, clean, and repeat for a near-flawless finish. Note that excessive sanding may compromise fine details.

Painting Techniques

Airbrushing:

• Strengths: Delivers even coverage and gradient shading; ideal for large surfaces.

• Limitations: Less precise for intricate details compared to hand painting.

Hand Painting:

• Use Cases: Small areas, fine lines, or detailed features (e.g., eyes, textures).

• Brush Selection: High-quality, thin brushes improve precision.

Paint Options:

• Acrylics: Affordable and widely available; practice required for smooth application.

• Model Paints: Higher pigment density for professional results.

• Clear Coats: Finish with satin or glossy spray to seal and protect the paint.

Material Considerations:

• Flexible Filaments: Avoid acrylics, as they crack under flexion. Use specialized flexible paints instead.

• Drying Time: Patience is critical—rushing causes clumping or uneven textures.

Skill Development:

• Practice: Experiment with gradients, masking, and layering to refine techniques.

• Tutorials: Study professional guides for complex tasks like eye detailing or texture replication.

Summary Recommendations

• Primer: Essential for paint adhesion; primer filler enhances surface quality.

• Tool Selection: Combine airbrushing (broad coverage) and hand painting (details) for optimal results.

• Material Awareness: Match paints to filament properties to prevent cracking or peeling.

Lastly, many have benefitted from a YouTube tutorial video titled "GalactiCustoms: 1/6 Paint Tutorial: Obi-Wan Kenobi- Pt 3 Eyes," which provided valuable insights into painting eyes and significantly enhanced the appearance of my painted parts.