This is a Blender add-on for generating vanilla Minecraft block display commands. Once this is done, the data can be loaded with the "Load Data" button, and the rest of the UI will appear. Now, with ...
So, When I run the command /summon block_display ~ ~ ~ {block_state:{Name:"minecraft:grass_block"}} or /summon item_display ~ ~ ~ {item:{id:"minecraft:diamond_sword ...