I found that there is no mod in 1.7.10 doing a good job at breaking the 64 item stack size limit, so I made one with mixins.
Need UniMixin as a dependency to work.
If you'd like InfiniStack to support another mod, please open an issue here.
If you plan to use this mod with GTNH, back up your world frequently. Support for this modpack is still under development. The recommended GTNH version is 2.8.4.
Important: Once a world has been loaded with this mod installed, removing the mod and loading the same world again may cause serious issues.
This project is under MIT License.