How to Panel Line with Acrylic Wash: Step-by-Step Guide

By Fuwa Fuwa Land-Fuwa Fuwa Land | Published: 2026-10-20

Category: How-to Guides

Learn how to panel line a model kit using acrylic panel line wash. This step-by-step guide covers tools, application, cleanup, and common mistakes.

Quick Answer

To panel line with acrylic wash, apply the wash into panel lines using the brush tip, let it dry, then clean up excess with a damp cotton swab or cloth. Use a dedicated acrylic panel line wash like Stedl Acrylic Panel Wash for best results.

Why Use Acrylic Wash Over Enamel or Lacquer?

Acrylic panel line washes are water-based, so they have less odor and are easier to clean up than enamel or lacquer alternatives. They are safer for indoor use and less likely to damage plastic parts if you accidentally let the wash pool. The tradeoff is that acrylic washes can dry faster, so you need to work in smaller sections and clean up promptly. They also may not flow into very tight lines as aggressively as solvent-based washes, but for most model kits, acrylic works well.

What You'll Need

You only need a few items: an acrylic panel line wash (such as Stedl Acrylic Panel Wash), a cotton swab or soft cloth, a small container of water, and optionally a hobby knife or toothpick for clearing clogged lines. No special thinners or gloves are required, though a well-ventilated area is always a good idea.

Step-by-Step Guide to Panel Lining with Acrylic Wash

1. Prepare Your Model Kit Surface: Ensure the model kit is assembled and free of dust, grease, or mold release. A quick wipe with a dry cloth is usually enough. If the kit has a glossy finish, the wash will flow better; matte surfaces may need a light gloss coat first. Checkpoint: If the wash beads up instead of flowing into the line, the surface is too porous. Apply a gloss clear coat and let it dry before continuing.
2. Shake the Wash Bottle and Test the Flow: Shake the Stedl Acrylic Panel Wash bottle gently to mix the pigment. Remove the brush tip cap and dab a small amount onto a scrap piece or the underside of a part to confirm the consistency. It should flow easily but not drip uncontrollably.
3. Apply the Wash into the Panel Lines: Touch the brush tip to the start of a panel line and let the wash wick along the groove. Move the tip along the line, applying light pressure. Work in small sections (one or two lines at a time) so the wash does not dry before you clean up. Common mistake: Applying too much wash at once can cause it to pool outside the line. Use a light touch and let capillary action do the work.
4. Let the Wash Dry Partially: Wait about 30–60 seconds for the wash to become tacky but not fully hard. Acrylic dries quickly, so check by touching a clean area of the line. If it feels dry to the touch, it is ready for cleanup. Checkpoint: If the wash dries completely before cleanup, it will be harder to remove. Work in small sections to avoid this.
5. Clean Up Excess Wash: Dampen a cotton swab or soft cloth with water (not soaking wet) and gently wipe across the panel line to remove excess wash from the surface. Wipe in the direction of the line to avoid pulling the wash out of the groove. Repeat with a dry swab to remove moisture. Common mistake: Using too much water can flood the line and wash out the pigment. Start with a barely damp swab.
6. Let the Wash Cure Fully: Allow the panel lines to dry completely for at least 30 minutes before handling or applying a top coat. Acrylic washes are water-resistant once cured, so you can safely seal them with a clear coat without smudging.

Product Used in This Guide

Stedl Acrylic Panel Wash with Brush Tip Cap - Neon Color: The Stedl Acrylic Panel Wash with Brush Tip Cap is available in multiple neon-inspired colors and comes with a brush tip for controlled application. The brush tip lets you apply the wash precisely into panel lines without needing a separate brush, and the neon colors add subtle contrast to your builds.
Stedl Acrylic Panel Wash with Brush Tip Cap - Neon Color