StackUp!
by asie
StackUp! raises the maximum stack size of items on Forge for Minecraft 1.12.2, letting players hold far more of each item in one slot.
What it does
Vanilla items stop at 64 per slot. StackUp! changes that limit, and the author states the limit can be raised to a very large value. The author advises keeping values well below that, around 8 to 16 thousand, because much higher values can cause odd Farlands-style glitches in some mods.
The mod is client and server, so the server and every player need it. The author says the patch was tested with a number of mods, including Refined Storage and Applied Energistics 2, and reports that compatibility with Charset, Iron Chests, Quark and Rustic is covered. Bug reports go to the other mod authors rather than to this author. StackUp! is open source under the GNU Lesser General Public License v3.0 only, and its source code and issue tracker are public. Its only published build is 0.2.5 for 1.12.2, released on 2021-11-12.
Key features
Raised stack limit
Items that normally stack to 64 can hold a higher count per slot, set through the mod's configuration.
Configurable maximum
The author describes a practical ceiling well below the extreme values the patch can technically reach.
Tested compatibility
The author reports testing with storage and tech mods, and lists Charset, Iron Chests, Quark and Rustic among the mods covered.
Public source
The code is available in a public repository with an issue tracker, and the mod's icon uses textures by CyanideX.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Bulk storage
Chests and storage networks can hold far more of a single item type before a slot fills up.
Who it’s for: Players who want larger stacks in a 1.12.2 modpack or world, and server owners who need every client to run the same build. The author's advice to keep values moderate suggests it suits players who want more space rather than extreme counts.
Questions
Does StackUp! need to be installed on the server?
Which Minecraft version does StackUp! support?
Why does the author advise against very high stack sizes?
In the catalog
StackUp! is one of 7,555 Cursed mods on ModsFinder, and one of 3,426 Cursed mods for Forge. 2,920 mods support Minecraft 1.12.2.
More from asie
Similar mods
What the author says
... * - Up to about 999 million. However, for reasons, I don't really recommend going above a few (8-16) million, and ideally staying far below that still. (Values far higher than that may cause strange Farlands-esque issues in some mods. You have been warned.) This patch has been tested with a lot of mods…
Official listing
- Modrinth page
- modrinth.com/mod/stackup
- Owner
- asie
- Published
- 2021-11-12
- Updated on Modrinth
- 2021-11-12
- Facts verified
- 2026-10-15