How to adjust the ratio of 1k paint?
3 Answers
It refers to single-component paint, commonly known as base paint + thinner, and then sprayed. It also refers to two-component paint, commonly known as base paint + hardener + thinner, and then sprayed. It cannot be used. You can use 1k paint for the primer and 2k paint for the top coat, but you must never mix 1k and 2k paints in either the primer or the top coat.
I've spent many years working in the paint shop at the car factory. 1K paint is the single-component type, unlike 2K which requires a catalyst. The main adjustment for viscosity is done by adding thinner. The manufacturer's manual is the bible, usually with a ratio between 1:0.5 to 1:1, depending on the product type and environment. Add more thinner in hot weather, or it will clump when sprayed; reduce it in high humidity to avoid orange peel. I remember when I was young and inexperienced, mixing it too thick clogged the spray gun, and I had to start over; too thin caused runs, and cleaning up was a nightmare. Testing with a small viscosity cup for about 20 seconds is ideal, then spray on a test panel to check gloss and uniformity. Don't overlook safety—wear masks and gloves, and good ventilation is crucial. Only through practice will you find the right ratio for your tools.
As a beginner in self-taught spray painting, I've found that the mixing ratio for 1K paint is absolutely crucial! When opening the paint can, look for the instruction manual's recommended ratio - most suggest between 1:0.6 to 1:1. Add the thinner gradually: first pour a small amount into the container and stir, then slowly increase until reaching the right consistency. If it's too thick, the spray gun will be hard to operate and prone to clogging; too thin and it'll run or drip, wasting time. Test spray on scrap panels to check coverage and drying speed - add more thinner in summer's high temperatures, less in winter. Don't forget to clean the spray gun and tools, and use the mixed paint within half an hour. A helpful tip is to pre-warm the paint can for half an hour to improve flow. Sharing my last mistake: improper ratio made the color turn extremely dark, causing heavy losses when remixing. Always prepare thoroughly before starting.
