Flexible hours: YES

With 3D printing custom manufacturing and prototyping services, the hours can be quite flexible. As the business owner, you can typically set your own schedule based on client demand and your availability. Online discussions often mention the freedom to work when it suits you best, making it a truly flexible side hustle. However, some users have highlighted the need to manage client expectations and meet project deadlines, which can sometimes require working within specific time frames. Overall, the general consensus leans towards flexibility with occasional time constraints based on project requirements.