Each week on Spraying Makes Sense Live we run a spotlight on anything spray-related. This week in the spotlight was the 3M PPS system. Ian talks about the 170ml mini cups which were a typical internet purchase! From the photo, he was sure these were the standard 650ml cups but when they turned up he realised his mistake lol. However, he has since found that they are perfect for his kitchen sample boards as they hold a small amount of paint.