FAQ
Blockbench: Precise Movement
To move/scale cubes in smaller increments than 1 you can hold the following key combinations:
-Shift: 0.25
-Ctrl: 0.1
-Ctrl+Shift: 0.025
If those default values are not to your liking you can change these incrementsin File > Preferences > Settings > Snapping
PS: If you want to allign 2 elements we suggest using the vertex snapping tool instead (see !faq vertex-snapping for more info)
Disclaimer: The modded entity format does NOT allow decimal cube sizes and neither does the Optifine Entity format if box-uv is enabled!