For soft materials such as rubber, silicone and styrene foam, thin blade (ZH14 and ZH16) can cut smoothly than standard blade. 🤓 This is because an area of blade that contacts to material is narrow and that improves sharpness, due to cutting focus, pointedly. 🧐 For plastics, blade thickness is not regarding cutting speed, but how it prevents plastic melting. If you are now only using Standard blade HA04, we recommend using other blades too to expand your range of creation. 🔥 #echotech #ultras