Non Stackable items with Curse of Vanishing are able to be stacked in a grinder.
Steps to replicate.
- Step 1. Get any 2 non stackables.
- Step 2. Enchant them both with Curse of Vanishing.
- Step 3. Put them together in a grinder .
(Sometimes when they go in the inventory they don't stack so keep repeating until they do.)
- Step 4. You can slowly make it into a stack by making another 2 and trying to place the first two onto the other two.
MC-140397 When combining two enchanted unbreakable items, two outputs are given