I noticed that the most popular tag (82 questions tagged) is 3d-printer, and that we also have a 3d-printing tag (23 questions). These seem extremely redundant to me, given that they should apply to any question that is on-topic and thus serve no practical purpose. These tags are simply too broad.
The usage guidance for 3d-printer is quite board ("Questions about a specific brand, model, or type of 3D printer.") and 3d-printing does not even have one.
I would suggest to get rid of these tags. For comparison, Stack Exchange does not have a programming tag either. However, they do have various tags that end in "-programming", such as "functional-programming", "linear-programming", etc... Our equivalents would be fdm(-printing), sla(-printing),...