XGN Create Mounted Stacks

XGN Create Mounted Stacks changes how the storage menu of Create contraptions handles slot limits. Create fixes the maximum at 64 items per slot in that menu. The mod drops the fixed value so the menu reads each container's own limit, which means the cap for a slot becomes whatever the item itself allows. Shift-clicking a stack of 500 into a mounted container now fills full slots instead of splitting into eight stacks of 64.

The change is made by a single mixin into the storage menu wrapper. It replaces the hard-coded 64 default of the Container interface, which vanilla sets to 99 with a limit of 1,000,000,000, and it adds no blocks, items, recipes, commands or config entries. Nothing is written to the save. A player who removes the mod gets the vanilla behavior back without losing any items, since ordinary chests were never limited to 64.

The mod is built and tested against Create 6.0.10 and needs Create 6.0 or newer, on Minecraft 1.21.1 with a recent NeoForge build. Create is required. Stack Size Tweaks is optional, and the build was tested with Stack Size Tweaks 0.3.4. Without it, items keep their normal stack sizes, so the change only matters for items that allow more than 64. The mod is licensed under All rights reserved and is not open source. It runs on client and server, so both sides should carry the same jar.