Define scratch.
Are you starting from beach sand, or do you have a fab and raw materials? There was an interesting video that showed what you had to do to make a pencil "from scratch".
Are you starting from beach sand, or do you have a fab and raw materials? There was an interesting video that showed what you had to do to make a pencil "from scratch".
The big surprise line is that there's no one on earth who knows how to make a pencil. (It therefore serves as testimony in favor of free enterprise and against the idea of a centrally planned economy.)