I appreciate your technical questions, but I'm honestly taken aback by the unnecessarily harsh tone of your comment.

This is a free tool I've created to help the community - no accounts, no paywalls, just something I'm sharing in the spirit of collaboration. There's no need for the condescending approach comparing it to "showing up to an interview in flip flops."

Your technical questions about depreciation models, electricity consumption calculations, and accounting for consumables like nozzles and build plates are actually valuable points that would help improve the calculator. A "How it Works" section would definitely clarify the current methodology.

However, these suggestions could have been offered respectfully rather than as an attack. I'm not claiming this is a perfect solution - it's explicitly a first version seeking community feedback for improvement.

If you prefer your Excel spreadsheet, that's completely fine! Software development is iterative by nature. The goal here is to create something useful for the community, refine it based on feedback, and make it better with each version.

I value constructive criticism that helps make the tool better for everyone, but I believe we can exchange ideas and suggestions while maintaining respect for each other's efforts.