Reason as well why I do not pay attention to my friends when they tell me that I should setup a small shop and get people to pay for small mechanical work... working on my cars (or sometimes friend's) is also a hobby and something that I enjoy a lot... because it is not work... The minute I turn any of my hobbies into a job/work it is ruined for me...
Same thing here! Doing custom knives, when and how I feel, is awesome. As soon as someone orders a commission, it's hard to even drag myself into the shop. Spent the last couple summers during and following covid doing contract work (pretty large contracts). But it gets old fast. It just means work at work, then work at home after dinner. I'm in a 'need a break' cycle.
@Janderso
That said, my shop has been growing by leaps and bounds due to the hobby contract, machining, and custom knife stuff. All the funding coming in from that gets reinvested into tools and materials. It basically zeros out the tax liability, and builds a really nice shop without dipping into other household finances. So, from this perspective, if you're bored and have the ability and aptitude I'd say go for it! Then use that to buy newer or better tools, then have fun doing it!
You may be able to do hobby work as a sole proprietor. You just need to include your sales and purchases as income and deduct cost of goods sold (tools, tooling, raw materials, etc.). If you do work under your own name, you don't need a DBA. If other work is with businesses you sell services to as wholesale, you might not need a sales tax license, etc. (There advantages to sales tax lisc, tho). Keep a good spreadsheet, and find a good 'one man show' tax guy. After you learn the ropes, feeding the tax guy your paperwork is very cost effective way to do the fun stuff and outsource the 'not fun stuff'.