CurseForge · Minecraft mod
CompressWithoutStress (PistonCompression)
PistonCompression, modernized for 1.12.x and newer Java.
Quick answer
Which CompressWithoutStress (PistonCompression) release should I use?
CompressWithoutStress (PistonCompression) pistoncompression-1.5.1.jar targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is CompressWithoutStress (PistonCompression) required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does CompressWithoutStress (PistonCompression) pistoncompression-1.5.1.jar need?
pistoncompression-1.5.1.jar. Change the file and its required mods may change too.
Install Cleanroom Relauncher, Scalar Legacy, Fugue first. We found matching files for this game-version and loader setup. 2 come through another mod in the chain.
2 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add CompressWithoutStress (PistonCompression) without breaking your instance.
Built for CompressWithoutStress (PistonCompression) pistoncompression-1.5.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use pistoncompression-1.5.1.jar. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Cleanroom Relauncher, Scalar Legacy, Fugue first. We found matching files for this game-version and loader setup. 2 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside pistoncompression-1.5.1.jar. It opens that exact file at the source.
About this project
What does CompressWithoutStress (PistonCompression) add?
PistonCompression — Modernized
MC 1.12.x • CLEANROOM • JAVA 25
What is this?
This is basically a fixed/modernized version of PistonCompression by Joseph C. Sible.
The mod lets you use six pistons to compress blocks into other blocks or items using the same basic replacement system as the original. The core compression logic and config format remain basically unchanged.
The important fix
Fixed cascading chunk/world generation from the original mod.
The original event handling could trigger compression checks while blocks were being updated, which could cause cascading chunk generation. This version queues the checks and processes them once per server tick, with loaded-chunk checks before accessing blocks.
Piston compatibility
This mod is not compatible with Quark's custom piston behaviour. The original PistonCompression had the same limitation, so this isn't a new issue introduced by this version.
This also applies to Quark: RotN Edition.
If you need custom piston interactions that are compatible, check out Piston API.
The slightly stupid part
I'm sorry, but I redid this on a Cleanroom mod template I had lying around. So this version requires Cleanroom + Java 25 and will not boot on a normal Forge setup.
Completely unnecessary for a tiny 1.12 mod, but it is what it is. ¯\_(ツ)_/¯
Build / tech stuff
- ForgeGradle 2.3 / Java 8 → Cleanroom / Unimined / Java 25
- Compression is now processed at the end of the server tick
Original mod
All credit for the original PistonCompression mod goes to Joseph C. Sible. This project is based on his original work and is intended as a modernized/fixed version for people who still want to mess around with the mod on newer Java setups.
// if you read this, have a great day idk
Project description from CurseForge.
Pick your setup
CompressWithoutStress (PistonCompression) by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
CompressWithoutStress (PistonCompression) versions and loaders
pistoncompression-1.5.1.jar
22 Aug 2026
pistoncompression-1.4.jar
30 Jul 2026
pistoncompression-1.3.jar
29 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.