Is it worth investing in a 3D printing course when my primary income comes from freelance writing?

I totally get why you're feeling stagnant as a freelancer - it can be tough to keep learning new skills when you're already busy with client work. I think it's great that you're considering a 3D printing course, though - it's a really interesting field that could potentially complement your writing skills in some unexpected ways. For example, you might find that you enjoy writing about 3D printing or creating content for companies that specialize in it.

As for whether it's a viable source of additional income, I think it's definitely possible to make money with 3D printing, but it might take some time and experimentation to figure out what works for you. You might consider starting small and trying to find a niche that combines your writing skills with 3D printing - like creating tutorials or guides for beginners, or writing about the latest developments in the field. That way, you can test the waters without having to invest a ton of time and money upfront.

I wouldn't necessarily recommend investing in a full-fledged course just yet, though - instead, you might try checking out some free online resources or YouTube tutorials to get a feel for the basics of 3D printing. That way, you can see if it's really something that interests you before committing to a course. And if you do decide to pursue it further, you can always look into more in-depth courses or training programs that can help you build on your skills.

Ultimately, I think it's worth exploring 3D printing as a potential new skill - even if it doesn't end up being a major source of income, it could still be a fun and rewarding hobby that helps you meet new people and learn new things. So, I'd say go for it - start with some free resources, see where it takes you, and then decide if it's worth investing more time and money into a course or training program.