How do I strip paint off a miniature and start again?
Which stripper is safe on plastic, resin and metal — because the wrong one melts the model — plus the soak-and-scrub method and the realistic expectation for what comes off.
- Difficulty
- intermediate
- Time
- 1 hr
- Read
- 4 min
- Safety
- warning
Short answer
For plastic and resin, use a mild non-solvent stripper such as isopropyl alcohol or a purpose-made hobby stripper, soak for hours rather than minutes, and scrub with an old toothbrush. Never use acetone, cellulose thinners or brake cleaner on plastic — they dissolve it. Metal figures tolerate stronger strippers. Expect two or three cycles, not one.
Stripping is what makes a miniature collection recoverable — a bad paint job, a second-hand purchase covered in thick enamel, or a scheme you have gone off. The whole risk sits in the choice of stripper, because the products that remove paint fastest are exactly the ones that attack polystyrene and resin.
Safety
What you'll need
- A stripper appropriate to the material
- A sealable glass or resistant plastic container
- An old toothbrush and cocktail sticks
- Nitrile gloves and eye protection
- Warm soapy water for rinsing
Step by step
- Identify the material before choosing anything.Hard polystyrene plastic, softer plastic, resin, 3D-printed resin and white metal all tolerate different chemicals. Getting this wrong turns a model into a puddle, and it is not reversible.
- Use a mild stripper on plastic and resin.Isopropyl alcohol at high strength, or a purpose-made hobby paint stripper described as plastic-safe, or a citrus-based degreaser. These work slowly by softening acrylic rather than dissolving it. Some household cleaning products with a strong degreaser also work, and should be tested on an unimportant model first.
- Never use a solvent stripper on plastic.Acetone, cellulose thinners, brake cleaner and most automotive paint strippers dissolve polystyrene on contact. They are effective on white metal, and only on white metal.
- Test on a spare or an unimportant model first.Half an hour in the stripper, then look. Softening or a slightly frosted surface is a warning to stop. Manufacturers change plastic formulations, so a product that worked before is not a guarantee.
- Soak in a sealed container.Enough liquid to cover the models, lid on so it does not evaporate. Hours, and often overnight. Stripping is slow — the temptation to shorten it with a stronger product is where models get ruined.
- Scrub with an old toothbrush, then soak again.The paint comes off in sheets in some places and not at all in others. Scrub, look, and put it back in for another few hours. Two or three cycles is completely normal, particularly with primer, which is the layer designed not to come off.
- Get into the recesses with a cocktail stick.Paint sits hardest in the deep detail — under a cloak, in a face, between fingers. A wooden stick and a stiff old brush reach where a toothbrush does not, without scratching the model.
- Wash and dry thoroughly before re-priming.Warm water, washing-up liquid and a brush to remove all stripper residue, then dry completely, which can take a day for a model with cavities. Primer over stripper residue will not adhere.
- Accept what will not come off.Superglue, some cured varnishes and heavily built-up enamel sometimes survive everything safe to use. A thin remaining film is usually paintable over — a thick one means the model is best left as it is.
Tips
- Reuse the stripper. Most hobby strippers and alcohol work for many batches, and the paint sinks to the bottom of the container between uses.
- Strip in batches. It is the same effort for one model as for twenty, and stripping is mostly waiting.
- Warm the container slightly by standing it in warm water and stripping goes faster, but never heat a solvent directly and never near a flame.
Common mistakes
- Using acetone, brake cleaner or cellulose thinners on plastic — These dissolve polystyrene rather than lifting the paint. The model softens, loses detail, and there is no recovery. This mistake destroys more miniatures than any other.
- Scrubbing hard on soft plastic — Plastic softened by the stripper is easily gouged by a stiff brush, and the damage only shows after priming. Scrub gently and soak longer instead.
- Priming before the model is completely dry — Water and stripper residue trapped in cavities comes out under primer and gives a patchy, poorly adhering coat. Give it a full day.
- Pouring used stripper down the sink — It is contaminated with paint solids and solvent. Household hazardous waste at a recycling centre is the correct route, and it is free.
If it doesn't work
The plastic has gone soft and tacky
Cause: The stripper is attacking the plastic, not the paint — Fix: Remove immediately, wash in soapy water and let it harden. Some models recover; badly affected ones do not. Change product.
Primer will not come off
Cause: Primer is formulated to bond, and it is the layer that resists — Fix: Repeat the soak-and-scrub cycle several times. A thin remaining primer film is usually fine to paint over.
Paint keeps clinging in the deep detail
Cause: Brush cannot reach — Fix: Cocktail sticks, a stiff old detail brush, and another soak. Patience beats force here every time.
The model fell apart in the stripper
Cause: Superglue joints softened — Fix: Normal for older superglue bonds. Reassemble and re-glue after stripping, and take the opportunity to pin the joints properly.
Questions people ask
Can I strip a model I have varnished?
Usually yes, but it takes longer because the varnish has to be broken through before the stripper reaches the paint. Hard polyurethane varnishes are the most stubborn.
Is it worth stripping second-hand models?
Almost always. Second-hand miniatures painted thickly are usually cheap for that reason, and stripping restores them at the cost of a few evenings of waiting.
Will stripping damage the detail?
The stripper should not. Scrubbing too hard on softened plastic will, and so will a solvent that is attacking the model. Gentle scrubbing and repeated soaks preserve everything.