Micro-Mark acrylics spray smoothly through an airbrush right out of the bottle, but for fine detail, thin coats, or high-flow applications, thinning is essential. Use the 20ml Airbrush Thinner to customize the flow and performance of your airbrush-ready paints. Designed specifically for thinning water-based acrylics for airbrushing Enhances atomization for smoother, more even spray patterns Maintains color vibrancy while improving flow and reducing tip dry Slows drying slightly to reduce clogging and overspray Made in the USA Description Micro-Mark Airbrush Thinner is formulated to work with our acrylic paint line and other water-based hobby paints. It ensures reliable spray performance, even through fine nozzles and at low PSI. This thinner improves atomization, reduces dry-tip buildup, and allows for smoother transitions, perfect for gradients, preshading, or modulation. Use it to adjust paint viscosity depending on the scale, surface, and detailing needs. Micro-Mark Airbrush Thinner is included in these sets:Item #29421 Essentials Acrylic Paint Set Airbrush Railroad Acrylic Paint Set Item #29270 Basic Airbrush Acrylic Paint Set Modeling Use Cases • Miniatures: Spray fine skin tones, highlights, or shadow transitions• Armor & Vehicles: Use for preshading, panel fading, and modulation• Model Trains: Evenly coat structures, rolling stock, or weathering effects• Terrain & Dioramas: Thin paint for subtle earth tones, fog layers, or atmosphere• Sci-Fi/Fantasy: Apply glow effects, translucent filters, or battle damage How to Use Micro-Mark Airbrush Thinner Prepare Your Paint• Pour paint into a separate mixing cup—never thin directly in the bottle.• Add thinner gradually: Start with a 3:1 paint-to-thinner ratio (or adjust as needed).• Mix thoroughly with a stir stick or pipette until smooth and lump-free. Test Spray First• Spray on a test surface to check consistency, spray pattern, and coverage.• Adjust PSI (typically 15–25) and thinner ratio to suit your nozzle and effect. Spray Your Model• Use sweeping motions and build up in thin layers.• The thinner helps eliminate spatter and clogs while improving fine control. Clean Your Airbrush• Rinse with water first, then flush with Airbrush Thinner or Micro-Mark Airbrush Cleaner.• Disassemble and clean nozzle if buildup is visible. Tips for Best Results • Don’t exceed 1:1 ratio unless aiming for very transparent effects.• Use with a gravity-feed or dual-action airbrush for maximum control.• Shake thinner well before use.• Store thinned paint only short-term to avoid pigment separation. Micro-Mark Airbrush Thinner is also available in a larger 8 oz size.