Mixing acrylic lacquer correctly is crucial for achieving a smooth and durable finish. Here's how it's done, based on recommended practices:
Proper Mixing Ratio
The key to mixing acrylic lacquer is achieving the right consistency for spraying. This is done by combining the acrylic colour with a suitable acrylic thinner.
- Recommended Ratio: Typically, you should mix 1 part colour with 1.5 parts acrylic thinner. This ratio is crucial for the lacquer to atomize properly when sprayed. For example, if you have 100ml of colour, you'll need 150ml of thinner.
| Component | Ratio | Example (ml) |
|---|---|---|
| Acrylic Colour | 1 part | 100 |
| Acrylic Thinner | 1.5 parts | 150 |
| Total | 2.5 parts | 250 |
Spraying Application
Once your lacquer is properly mixed, you’ll need the correct equipment for application.
- Spray Gun Nozzle: It's recommended to use a spray gun with a 1.8mm or 2.0mm nozzle. This nozzle size allows for optimal atomization of the lacquer, leading to a smoother finish.
- Spraying Pressure: Set your compressor to deliver a pressure of 28-30 PSI (pounds per square inch) at the spray gun. This pressure range provides the right balance for even and controlled application, preventing issues like spitting or overspray.
Tips for Mixing and Application:
- Thorough Mixing: Make sure to thoroughly mix the colour and thinner together to ensure an even consistency. You may need to stir for a few minutes to ensure they are fully combined.
- Test Spray: Before spraying on your final piece, do a test spray on a piece of cardboard to adjust the gun settings and practice your spray pattern.
- Multiple Thin Coats: Apply several thin coats of the acrylic lacquer, allowing each coat to dry or flash off according to the manufacturer’s instructions before adding another. This approach prevents runs and ensures a more durable final coat.
By following these steps and using the correct ratios, nozzle size, and pressure, you can successfully mix and apply acrylic lacquer for a professional-looking finish.
