The alternate approach would be to start an own business. However this seems like really a lot of work that would distract me from further design.
Opening up a business, on the other hand, may have tax benefit, depending on your state and local tax laws.
Here in Aus they will allow you to do that for a few years but if you aren't showing a decent profit at some point and are still claiming expenses they decide you are taking the piss.
Have you considered selling kits?
I already got offers by PM.
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