Scalecoat Wash Away — The Ultimate Plastic-Safe Paint Remover for Model Trains, Cars, and Military Kits
Scalecoat Wash Away has been a trusted tool in the model railroad world for years. But it’s not just for trains — it’s an exceptionally gentle and effective way to strip paint from plastic model car bodies, racecar shells, aircraft, armor kits, and more. In this guide we’ll explain what it removes, how to use it safely, compatibility tips for Tamiya, Revell, Trumpeter, Hasegawa, AMT, Monogram, Moebius (and many more), and why every modeler should consider it for their bench.
What is Scalecoat Wash Away?
Scalecoat Wash Away is a hobby-grade paint remover engineered for the needs of scale modelers. Originally developed to remove Scalecoat paints from locomotive shells and rolling stock, it’s formulated to dissolve paint layers while leaving common modeling plastics (polystyrene, ABS, and many injection molded substrates) intact.
That combination — effective paint removal with plastic safety — is why Wash Away became a favorite in the model railroad community, and why it’s now gaining traction among model car, aircraft, and military kit builders.
Quick summary
- Primary use: Remove lacquer, enamel, and many acrylic hobby paints from plastic model parts.
- Designed for: Polystyrene and ABS model parts; originally for train shells but applicable to most plastic kits.
- Not tested / use with caution: Urethane casting resins, some 3D printing resins, and clear/transparent parts unless tested first.
What Wash Away removes — paints and brands
One of Wash Away’s biggest strengths is its broad compatibility with the paint brands and types commonly used in the hobby. In field testing and community reports, modelers have successfully stripped:
Common hobby paint brands
- Tru-Color (solvent-based): Excellent.
- Tamiya (lacquer and acrylic): Excellent for lacquer; very good on most acrylics.
- Testors / Model Master (enamel & lacquer): Excellent.
- Vallejo (water-based acrylic): Very good — often requires less soaking.
- MCW Finishes, Mission Models Paint, A.MIG, AK Interactive, Ammo by Mig: Strong performance reported.
- Craft paints / latex: Works well for most craft and acrylic house paints commonly used by diorama builders.
Put plainly: if it’s a hobby lacquer, enamel, or common acrylic used on plastic kits, Wash Away will usually remove it cleanly. For modern high-crosslinked polyurethane-based systems you may need a longer soak or multiple passes.
Manufacturers / kit types it pairs with
Wash Away pairs beautifully with bodies and parts from:
- Model car brands: AMT, Monogram, Revell, Moebius, Tamiya, Fujimi.
- Aircraft brands: Hasegawa, Eduard, Airfix, Trumpeter, Kinetic, Italeri, HobbyBoss.
- Military / armor: Tamiya, Trumpeter, Meng, Dragon, Academy, Italeri.
- Model railroad shells: Athearn, Atlas, Walthers, Kato, Rapido — the original home for Wash Away.
Tip: Factory-applied finishes on diecast or pre-painted kits can also often be removed — though always test. The stripped surface should be cleaned and prepped before repainting for optimal adhesion.
How to use Scalecoat Wash Away — step by step
Below is a practical, beginner-friendly workflow that seasoned modelers use to get clean results quickly.
What you’ll need
- Scalecoat Wash Away (SCP10568). Product page.
- Plastic container (food-safe storage tubs work well).
- Soft toothbrush or nylon brush.
- Nitrile gloves and safety glasses.
- Warm water and mild detergent for final rinse.
- Paper towels, strainer/fine mesh for residue, and a storage lid for reuse.
Step-by-step process
- Disassemble and remove delicate parts: Remove canopies, clear parts, photo-etch, and decals where possible. Clear parts can haze — treat separately or mask them off.
- Pour & submerge: Pour Wash Away into a plastic container and fully submerge the painted parts. Use enough liquid so parts float freely and paint is fully immersed.
- Soak: Typical soak is 10–30 minutes. Thin lacquers and enamels often lift within 10–20 minutes; older or thicker enamel coats may take longer or require a second soak.
- Brush gently: After soaking, use a soft toothbrush to sweep the softened paint away while under warm running water. Paint should flake or slide off.
- Rinse & dry: Rinse with warm soapy water, then clear water. Let parts air dry thoroughly before sanding, priming, or repainting.
- Repeat if needed: For stubborn paint, repeat the soak. Don’t force with metal tools — re-soak instead of scraping hard.
Time expectations
Expect shorter times for modern lacquers and longer times for old enamels or heavy paint builds. The major benefit: no warping, no softening of detail in most polystyrene/ABS parts.
Compatibility: 3D prints, urethane resin kits, and clear parts
We get this question a lot. Here’s the responsible, practice-based guidance you can trust and show on product pages or labels.
3D printed parts
There are hundreds of 3D resin chemistries. In theory, Wash Away may work on some cured 3D resins — but results will vary by manufacturer and post-cure process. If you need to remove paint from a 3D printed part:
- Test on an inconspicuous area or sacrificial test print.
- Use a short soak and check frequently for softening or surface change.
- Rinse thoroughly and re-evaluate before full treatment.
Urethane casting resins
Wash Away has not been tested exhaustively on urethane casting resins. Urethane resins are chemically diverse and can react unpredictably. Treat these parts with caution: test first and avoid long soaks unless you’re confident in the resin’s resistance.
Clear parts (canopies, windows)
Clear parts are vulnerable to hazing, crazing, or surface dulling. We recommend:
- Removing clear parts and treating them separately (or masking them off).
- If you must soak a clear piece, do short soaks and inspect frequently.
- For final polish use very fine polishing compounds designed for clear plastics.
Short, safe rule: When in doubt — test. Specify this on your product page and label: “Not tested on all resins — always perform a compatibility test”.
Pro tips and tricks from modelers who use Wash Away
Reuse and storage
One of the best features of Wash Away is reusability. Use a fine strainer or coffee filter to remove paint chips, store in a sealed container, and it will work again for multiple kits.
Slow & safe beats fast & aggressive
Rather than force scraping with metal tools (which can gouge or scratch), give Wash Away time to do its job. Re-soak if needed — it’s gentler on edges and panel lines.
Large parts
For large car bodies, use a shallow wide container so the body can be rotated and soaked evenly. A lid helps slow evaporation and keeps the solution usable longer.
Removing decals
Decals will usually soften and lift after the paint is removed. If you plan to keep decals, remove them first or avoid prolonged soaking.
Combining with light mechanical cleaning
After soaking and brushing, a soft brass brush (very gentle) or a toothbrush with light pressure can remove stubborn paint in recessed areas — but take it slow.
Bench-tested recipes
Community-tested sequence for a heavy enamel job:
1. Initial 30–45 minute soak.
2. Brush under warm running water.
3. If paint remains, strain solution and re-soak 20–30 minutes.
4. Final soft-brush and mild detergent rinse.
Reuse, disposal, and safety guidance
Personal safety
- Work in a well-ventilated area.
- Use nitrile gloves and eye protection.
- Keep away from open flames — this is a solvent system.
Reusing your batch
Strain paint flakes through a coffee filter or fine mesh and store the solution in a sealed, labelled container. Doing this can make one purchase cover many projects.
Disposal
When your batch is spent, dispose of it according to local hazardous waste regulations. Do not pour concentrated used solvent down the drain. If you need to reduce volume, many modelers let small amounts evaporate in a safe, ventilated area into an appropriate absorbent (but local guidance should be followed).
How Wash Away compares to other common strippers
Here’s a quick comparison to help modelers choose the right tool for the job.
Wash Away vs Brake Fluid
Brake fluid can be effective but is often riskier on plastic (can soften or craze). Wash Away is formulated for plastics and is generally safer for detail preservation.
Wash Away vs Oven Cleaner / Easy Off
Oven cleaner can strip paint but is corrosive and unpredictable on plastic. Wash Away provides consistent results without the aggressive chemistry that can ruin parts.
Wash Away vs Commercial Industrial Strippers
Industrial strippers are powerful but typically harsh and not designed for fine polystyrene parts. Wash Away strikes a balance — strong enough to remove hobby paints, gentle enough to keep details intact.
Conclusion: For hobbyists who care about detail preservation and reusability, Wash Away is an optimal choice.
Real modeler stories — a few quick case studies
Case: 1/24 classic car rescue
A user rescued a decades-old Monogram Mustang with heavy orange peel enamel, stripped with Wash Away, and repainted with Tamiya lacquer. Result: smooth finish and preserved panel lines.
Case: 1/35 tank repaint
A hobbyist removed multiple layers of old enamel and acrylic from a Trumpeter tank hull to prep it for new weathering and decals. No softening to the molded texture or rivets.
Case: HO locomotive restoration
A classic Athearn shell with overspray was restored to bare plastic and repainted with Scalecoat paint for a historically accurate finish.
FAQ — Short answers to common questions
- Q: Is Wash Away safe for all plastics?
- A: It’s safe for most polystyrene and ABS plastics used in injection molded kits. Always test on an inconspicuous area for unfamiliar materials.
- Q: Will Wash Away damage clear parts or canopies?
- A: Clear parts are at higher risk of hazing. Remove or mask them before soaking whenever possible.
- Q: Can I use it on resin or 3D-printed models?
- A: Results vary. For 3D printed parts and urethane resins, test first. Different resins react differently.
- Q: How many kits can I strip with one bottle?
- A: It depends on the volume of paint removed and how well you strain and reuse the solution. Many hobbyists strip multiple kits from a single small bottle if the solution is reused and strained.
- Q: What paints can it remove?
- A: Lacquers, enamels, many acrylics (Tamiya, Testors, Vallejo, Tru-Color, MCW, Mission Models, Ammo by Mig, AK Interactive, etc.).
Where to buy Scalecoat Wash Away
Purchase the official product directly from the manufacturer: Scalecoat Wash Away Paint Remover (SCP10568).
Try it risk-free: If you’re expanding from trains into car bodies or armor kits, buy a single bottle to test on a few parts — you’ll quickly see why modelers keep Wash Away on their bench.
