I never claimed to have invented the #photography tag. Just like none of the other Hive tribe leaders claim to have invented their tribe tags. Nobody disputes that #sports, #finance, #technology, et al. are generic. If you understand how a 3D printer works then you should be smart enough to already have known that.
Are you feeling O.K.? Maybe you need a rest or a drink of water. Have you checked the batteries in the carbon monoxide detector lately?