Thinning Products for HVLP

What happens here

Most products, especially lacquers, need to be thinned before being sprayed with an HVLP system to ensure a smooth, even application and prevent clogging. A good starting point for thinning is often around 20-25%. The exact thinning ratio will vary depending on the product, temperature, and specific HVLP sprayer. Use a viscosity cup (e.g., a #4 Ford viscosity cup) to measure the flow time of the thinned product. This tool has a small hole at the bottom; you fill it with your thinned product and time how long it takes for the liquid to run out. Different products and manufacturers will have recommended flow times for optimal spraying. Adjust thinning until the desired flow time is achieved. It is crucial to practice spraying on a test surface (like cardboard or plastic) before applying to the actual cabinets.

Goal: Properly thin paints and lacquers for HVLP application to achieve the best spray pattern and finish, using a viscosity cup to measure and adjust consistency.