Best Model Paint Thinners: Match the Right Thinner to Your Paint
Updated How we research
Tamiya 81040 Acrylic Paint Thinner X-20A 250ml Bottle
Tamiya 81040 Acrylic Paint Thinner X-20A 250ml bottle, a large bottle of thinner for Tamiya acrylic paints.
Vallejo Airbrush Thinner for Acrylic Paints 200 ml
Vallejo Airbrush Thinner for Acrylic Paints 200 ml, a thinner formulated for Vallejo acrylics in the airbrush.
More airbrush problems trace back to thinner than to the airbrush itself. Paint straight from the bottle is almost never ready to spray, and the thinner you cut it with controls atomization, drying speed, adhesion, and whether the nozzle clogs with dried paint mid-session. The rules are chemical: lacquer thinner bites into surfaces and levels beautifully, acrylic thinners vary hugely between water-based systems, and enamel wants mineral-based solvents. Cross-matching brands sometimes works and sometimes curdles paint in the cup. Retarder-laced formulas fight tip-dry in dry climates, and some thinners double as airbrush cleaners. This guide compares thinners across the major paint systems, with practical mixing ratios and notes on which combinations are proven safe.
The short version
We compared 7 picks. Our scores range from 6.7 to 8.3 out of 10.
- Best overall:Tamiya 81040 Acrylic Paint Thinner X-20A 250ml Bottle. Highest overall score in this guide at 8.3/10.
- Also great value:Vallejo Airbrush Thinner for Acrylic Paints 200 ml. Value score of 8/10, overall 8.1/10.
- Solid build:Mr. Color Thinner T104 GSI Creos. Build and materials score of 8/10, overall 7.8/10.
- Feature-rich:AK-Interactive High Compatibility Thinner. Features score of 7/10, overall 7.6/10.
Scores are our editorial assessment, not customer ratings. How we score
- 1.Tamiya 81040 Acrylic Paint Thinner X-20A 250ml Bottle8.3/10See on AmazonCheck price
- 2.Vallejo Airbrush Thinner for Acrylic Paints 200 ml8.1/10See on AmazonCheck price
- 3.Mr. Color Thinner T104 GSI Creos7.8/10See on AmazonCheck price
- 4.AK-Interactive High Compatibility Thinner7.6/10See on AmazonCheck price
- 5.Tamiya America Acrylic/Poly Thinner X20A 46ml TAM810307.1/10See on AmazonCheck price
- 6.Tamiya LP-10 Lacquer Thinner 10ml TAM821106.8/10See on AmazonCheck price
- 7.Mr. Hobby - Mr. Aqueous Color Thinner 110ml, GSI Creos (T110)6.7/10See on AmazonCheck price
| # | Product | Our score | Price | |
|---|---|---|---|---|
| 1 | Tamiya 81040 Acrylic Paint Thinner X-20A 250ml Bottle | 8.3/10 | See on Amazon | Check price |
| 2 | Vallejo Airbrush Thinner for Acrylic Paints 200 ml | 8.1/10 | See on Amazon | Check price |
| 3 | Mr. Color Thinner T104 GSI Creos | 7.8/10 | See on Amazon | Check price |
| 4 | AK-Interactive High Compatibility Thinner | 7.6/10 | See on Amazon | Check price |
| 5 | Tamiya America Acrylic/Poly Thinner X20A 46ml TAM81030 | 7.1/10 | See on Amazon | Check price |
| 6 | Tamiya LP-10 Lacquer Thinner 10ml TAM82110 | 6.8/10 | See on Amazon | Check price |
| 7 | Mr. Hobby - Mr. Aqueous Color Thinner 110ml, GSI Creos (T110) | 6.7/10 | See on Amazon | Check price |
#1Tamiya 81040 Acrylic Paint Thinner X-20A 250ml bottle, a large bottle of thinner for Tamiya acrylic paints.
Fit for the job 9/10 · Features and specs 7/10 · Build and materials 8/10 · Value 9/10
- + 250ml bottle is economical for frequent airbrushing
- + Matches Tamiya acrylic chemistry for smooth flow
- + Also useful for cleaning brushes and airbrush parts
- - Alcohol-based thinner has a noticeable smell
- - Not ideal for thinning water-based acrylic brands
#2Vallejo Airbrush Thinner for Acrylic Paints 200 ml, a thinner formulated for Vallejo acrylics in the airbrush.
Fit for the job 9/10 · Features and specs 7/10 · Build and materials 8/10 · Value 8/10
- + Designed to thin Vallejo acrylics without breaking them down
- + 200 ml bottle lasts a long time for regular sprayers
- + Helps reduce tip dry and improves paint flow
- - Less effective with lacquer or enamel paint brands
- - Too much thinner can cause paint to bead or run
#3Mr. Color Thinner T104 from GSI Creos, the standard thinner for Mr. Color lacquer paints and airbrush cleanup.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 8/10 · Value 8/10
- + Standard match for Mr. Color lacquer paints
- + Strong solvent also cleans airbrushes thoroughly
- + Faster drying than leveling thinner for quick coats
- - Can cause orange peel without the leveling additive
- - Check the bottle size in the listing before ordering
#4AK-Interactive High Compatibility Thinner, a universal-style thinner meant to work across many acrylic brands.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 8/10 · Value 7/10
- + High compatibility helps when mixing paint brands
- + Useful for AK's own acrylics and many others
- + Reduces need to stock multiple brand-specific thinners
- - Check the bottle size in the listing before stocking up
- - Results can still vary with some paint formulas
#5Tamiya Acrylic/Poly Thinner X20A 46ml TAM81030, a small bottle of Tamiya's acrylic thinner for occasional use.
Fit for the job 8/10 · Features and specs 6/10 · Build and materials 8/10 · Value 6/10
- + 46ml size suits brush painters who thin sparingly
- + Same X20A formula as Tamiya's larger bottle
- + Compact bottle fits easily in a small paint station
- - Poor value per ml compared with Tamiya's larger thinner bottle
- - Runs out fast if you airbrush regularly
#6Tamiya LP-10 Lacquer Thinner 10ml TAM82110, a lacquer thinner for Tamiya LP lacquer paints and fine brushing.
Fit for the job 7/10 · Features and specs 6/10 · Build and materials 8/10 · Value 6/10
- + Formulated for Tamiya LP lacquer paints
- + Tiny 10ml bottle is handy for touch-up work
- + Helps lacquer paints level smoothly when brushed
- - 10ml is far too small for airbrushing sessions
- - Lacquer thinner fumes demand good ventilation
#7Mr. Hobby Mr. Aqueous Color Thinner T110, 110ml, a thinner for diluting and cleaning aqueous hobby colors from GSI Creos.
Fit for the job 7/10 · Features and specs 5/10 · Build and materials 7/10 · Value 8/10
- + Made for the GSI Creos aqueous color range, so it is a matched thinner for those paints.
- + 110ml bottle is a handy size for a bench.
- + Listing states it is used for both diluting and cleaning aqueous paints.
- - Only for aqueous paints, not for lacquer; it replaces a leveling thinner, which is a different job.
- - The listing has just one line of detail, so mixing ratios are not given.
Before you buy: trade-offs we flagged
No pick is perfect. These are the main compromises we noted for the top products in this guide, so you can check they will not matter for you.
- Alcohol-based thinner has a noticeable smell (Tamiya 81040 Acrylic Paint Thinner X-20A...)
- Less effective with lacquer or enamel paint brands (Vallejo Airbrush Thinner for Acrylic Paints...)
- Can cause orange peel without the leveling additive (Mr. Color Thinner T104 GSI Creos)
- Check the bottle size in the listing before stocking up (AK-Interactive High Compatibility Thinner)
- Poor value per ml compared with Tamiya's larger thinner bottle (Tamiya America Acrylic/Poly Thinner X20A 46ml...)
- 10ml is far too small for airbrushing sessions (Tamiya LP-10 Lacquer Thinner 10ml TAM82110)
Frequently asked questions
›What is the best choice among model paint thinners: match the right thinner to your paint?
Tamiya 81040 Acrylic Paint Thinner X-20A 250ml Bottle is our top overall pick. Tamiya 81040 Acrylic Paint Thinner X-20A 250ml bottle, a large bottle of thinner for Tamiya acrylic paints. It earns our score of 8.3/10, based on fit for the job, features, build and value.
›What is a good budget option?
Vallejo Airbrush Thinner for Acrylic Paints 200 ml is the strongest low-cost pick in this guide. Vallejo Airbrush Thinner for Acrylic Paints 200 ml, a thinner formulated for Vallejo acrylics in the airbrush.
›How much should I expect to spend?
Picks in this guide span See on Amazon price bands (roughly: $ = under $30, $$ = $30 to $100, $$$ = over $100). We never display exact prices because they change constantly, so the buttons above always show Amazon's current price.
›How were these products chosen?
We shortlist products that fit the job this guide solves and compare their published specifications, such as size, capacity, materials and what is included. Each pick gets an editorial score out of 10 for fit, features, build and value, and we write the pros and cons from those details. Our score is not an Amazon customer rating. We earn a commission if you buy through our links, which never affects the ranking.
Model Build Lab independently selects every product; we may earn a commission from links above.
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