Blender Render Cache & Auto-Save Files (quit.blend)

Bottom Line: It is 100% safe to delete quit.blend and Blender temporary cache files. Deleting them will NOT delete your saved .blend project files or 3D models.

What are quit.blend & Blender Cache Files?

Located in your system temp directory (%LocalAppData%\Temp on Windows or /tmp / ~/Library/Caches on Mac/Linux), these files are created by Blender 3D.

Blender creates:

• quit.blend: An automatic emergency recovery file written whenever you close Blender.
• Physics & Fluid Simulation Cache (cache_fluid): Pre-calculated fluid, smoke, cloth, and rigid-body physics simulations.
• Cycles Shader Cache: Pre-compiled GPU render kernels.

Working on complex 3D scenes or physics simulations can leave behind 5 GB to 30 GB+ of temporary simulation caches.

Can You Delete quit.blend and Render Caches?

✅ Yes, it is safe to delete.

• No 3D asset loss: Your primary .blend project files remain untouched in your project folders.
• Auto-recalculated: Physics simulations can be re-baked anytime inside Blender with one click (Bake All Dynamics).

How to Safely Clean Up Blender Caches

Method 1: Delete Temp Files via Explorer / Finder

1. Close Blender.
2. Press Win + R, type %Temp%, and press Enter.
3. Locate and delete quit.blend and subfolders starting with blender_.

Related Guides

• Learn about deleting Photoshop Scratch Disks.
• How to clean up After Effects Disk Cache.
• Check if you can clean Unity AssetCache.