I think you are missing the point. What you say here (in HN comments) doesn't matter at all. You should fix the license accordingly - or not, if this suits you

I think you are missing the point. What you say here (in HN comments) doesn't matter at all. You should fix the license accordingly - or not, if this suits you better. I agree with the parent though, if I were in busines and wanted to use your drawings, I wouldn't touch them with such a license. Even as a personal hobby project I would bug you for (official & written) permission before using any of the diagrams. Other than that, it is nice reading about the technical decisions that go into building such racks. Kudos for sharing the knowledge!