StackUp! is a Minecraft mod which lets you remove the vanilla item stack size limit of 64, instead setting it as high as you want*. You can find an introductory tutorial (assuming 1.12) here.<\/p>\n
… * – 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.)<\/p>\n
Usage of the mod is as follows:<\/p>\n
* Upon installation, a “stackup.cfg” configuration file will be created. Do not forget to open it and set the maxStackSize configuration option – otherwise, items will still be hard-limited by 64! The config option sets the maximum global stack size. You can set it to anything you want – 99? Five hundred? Ten thousand? One million? The sky is the limit!
\n* After this, you may notice that all of the blocks and items still have a stack size of 64! That is correct – to prevent balance-breaking issues, StackUp! will only change default stack sizes by itself in very rare cases. To change items’ stack sizes, you can either use the built-in scripting system introduced in StackUp! 0.2.0, or an external mod such as CraftTweaker.<\/p>\n
This patch has been tested with a lot of mods (including, but not limited to Refined Storage, Applied Energistics 2, Charset, Iron Chests, Quark and Rustic), but compatibility is not 100% guaranteed. Please report any bugs you find to us directly and not to other mod authors!<\/p>\n
For modders: While I do patch most common patterns of “maximum slot limits” in inventories, I may not be able to catch more advanced ones. Items.AIR.getItemStackLimit(); is your friend!<\/p>\n
For modpack developers: Make sure to read the scripting system documentation above.<\/p>\n
Project icon utilizes Unity textures by CyanideX.<\/p>\n","protected":false},"excerpt":{"rendered":"
Increase the maximum stack size from 64.<\/p>\n","protected":false},"featured_media":147844,"template":"","meta":{"_minecraft_slug":"stackup","_minecraft_project_id":"sBay5WBJ","_minecraft_author":"asie","_minecraft_license":"LGPL-3.0-only","_minecraft_downloads":9869,"_minecraft_follows":12,"_minecraft_client_side":"required","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"stackup.zip","_minecraft_size_bytes":86073,"_minecraft_version_count":1,"_minecraft_updated_at":"2026-05-16T06:22:13.537029Z","_minecraft_date_created":"2021-11-12T18:38:39.307267Z","_minecraft_date_modified":"2021-11-12T18:38:39.016120Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/stackup","_minecraft_icon_attachment_id":147844,"_minecraft_imported_at":"2026-06-08T21:01:16+00:00","_minecraft_import_hash":"d8921f716d65d8ca96ca78342e02e054","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[43,104],"mod_loader":[106],"minecraft_version":[385],"class_list":["post-147843","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-cursed","mod_category-forge","mod_loader-forge","minecraft_version-1-12-2"],"yoast_head":"\n