By hand usually means using machinery to do something the traditional way. People can do very little without machines. The difference is that it’s not a mass p

By hand usually means using machinery to do something the traditional way. People can do very little without machines. The difference is that it’s not a mass production process that usually requires special chemicals and treatments to keep the ingredients in certain state to run high speed high yield process. It’s like the hand made toys that are actually made using power tools, knives, hammers etc. as long as you don’t alter the process but just get help from machines to speed up things or increase yields, it’s handmade.