A full time knife maker has to be an expert on time management, cost management, and marketing skills. It's not just about making a great knife.
Time management-figuring out how much 'time' is spent in knife making, how much time is spent in designing, how much time is spent is sourcing materials, and how much time is spent in 'administrative' endeavors like taxes, book-keeping and the like. I have run a one-man studio producing jewelry (a 'like' craft). Breaking down the time I spent on other things besides making jewelry, I found that I could make jewelry for 6 hours a day, 2 hours a day for sourcing materials and 2 hours a day for administrative tasks like book keeping. Yes, that turns into 60 hours a week. Time was my biggest asset and I couldn't waste it.
Cost management- buying is just as important as selling. It takes time to do the research to know where to find the materials you need, in the quantities you stock. There is an old saying that you make your money when you buy, not when you sell. And, you must treat your cost of operation the same way. Shop rent, insurance, advertising and a web presence are all costs of operation.
Marketing is that time spent in bring your product to market. A nice web presence requires a LOT of time away from knife making, community involvement to further your name 'recognition' takes a lot of time.
Time is money. You have to figure out what percentage of you 'time costs' must be added to each knife. If you don't, you will find yourself behind the "8 ball" quickly. If you screw up one knife, all the costs of producing that knife must be spread over all the knives you make, and your "costs per knife" takes a big hit. More pressure...
My wife used to call herself a "Christmas Widow'. I would be working 80 hrs. or more weekly from mid-November until December 24th. @ 12:00. After all, I had to do my Christmas Shopping
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I have the utmost respect for the full-time knife makers here. Most are over-worked and under-paid. For me, in the jewelry business, I loved what I did and the time just flew by---cause I was having fun. But the time came when I had to follow accepted business procedures, and then it became a "job". It wasn't as much fun anymore, it was work.
And I haven't even mentioned the concept of "defining your market".