Weathering, Filtering and Chipped Paint Effects

Alpha Model Tech Share Series · 2026 · All Scales
Good weathering is not about making the model look old — it is about realism. Restraint, gradation and logical placement are everything. Here is a complete guide to weathering, filtering and chipped paint.

01 · Weathering – Core Concept

The essence of weathering is realism, not simply making the model look "old." Focus on:

• Subtlety
• Restraint
• Gradients
• Logical placement (based on real-world wear and usage)

02 · Weathering Powders / Pastels

Recommended Colors

• Very light grey
• Off-white
• Brown
• Earth yellow
• Dark grey / black

Basic Technique

• Use a dry brush to apply lightly.
• Lighter in the center, slightly darker on the edges.
• Build up gradually — do not apply too much at once.

Body Weathering Logic

(1) Lower Body Dust Accumulation

Areas: lower body panels, wheel arches, lower door edges.

Method:

• Use brown / earth yellow powders.
• Apply from bottom to top.
• Create a gradient (darker at the bottom, lighter upward).
• Avoid hard edges or visible lines.

(2) Wheel Weathering (Brake Dust)

• Lighter center, darker recesses.
• Use dark grey / black powder.
• Tip: apply panel liner first to enhance details, then add powder for a more natural effect.

(3) Tire Oxidation

• Use light grey-black powder.
• Gently brush on the sidewalls.
• Do not paint the entire tire black (it avoids a toy-like look).

(4) Chassis Dirt Effect

• Use brown-grey texture mud or diorama soil.
• Apply locally.
• Simulate real road dirt accumulation.

03 · Chipped Paint Effect

Materials

• Sponge (torn into an irregular shape).
• Paint: silver, red oxide (common primer color).

Steps

1. Dip the sponge lightly into paint.
2. Dab off excess paint on paper or your hand.
3. Gently tap it on the model surface.

Key Areas

• Edges.
• Raised details.
• Frequently worn areas.

Notes

• Avoid large flat surfaces.
• Civilian cars do not have heavy chipping.
• Keep it subtle, random, and minimal.
• Use primer color (e.g., red oxide) for realism.

04 · Filtering Technique

Materials

• Tamiya enamel / oil paint.
• Zippo lighter fluid / enamel thinner (lighter fluid is cost-effective and recommended).
• Flat soft brush.
• Lint-free tissue.

Mixing Ratio

Small amount of paint + large amount of thinner. Dilute to a very transparent, tea-like consistency.

Steps

1. Apply a thin coat from top to bottom across the whole body (simulates rain streaks).
2. Do not wait for it to dry.
3. Immediately use a clean tissue or a slightly damp soft brush to gently wipe the surface.

Desired Effect

• Color remains in panel lines, gaps, and edges.
• Flat surfaces should be mostly clean.
• Let it dry naturally for about 10 minutes.

Alternative: panel liner can also be used to achieve a similar filtering effect.

Color Suggestions

• White body: light grey / light blue.
• Black / dark body: dark grey / light brown.
• Red / blue bright colors: a slightly darker tone of the same color.

05 · Advanced Techniques

(1) Color Variation

• Use very subtle filters in different tones.
• Apply slight variation across panels.
• Simulate sun fading and aging.

(2) Streaking

• Apply small dots of paint on upper areas.
• Pull downward with a clean brush.
• Creates natural rain marks.

(3) Scratches

• Use a very fine brush to draw thin lines.
• Light inside, darker edges.
• Optional silver highlight.

(4) Edge Highlighting (Metal Exposure)

• Dry brush a very small amount of silver.
• Only on the most exposed edges.

06 · Common Mistakes

• Over-weathering (looks dirty rather than realistic).
• Harsh transitions (no smooth gradient).
• Chipping on large flat areas.
• Tires painted solid black.
• Filter too heavy (loses transparency).

07 · Summary

Good weathering is not about adding more, but about controlling effects. Remember three key principles:

• Restraint
• Realism
• Gradation

If it looks like natural wear instead of intentional aging, you have done it right.

Build. Detail. Inspire. — Alpha Model Technical Team