Keys

All Heavymatica keys are in the Heavymatica category of Options → Controls → Key Binds. Change any of them there. Keys without a default are “not bound” until you give them one. The same keys and defaults apply on Fabric and NeoForge.

Sharing keys with vanilla

Most keys only act while you hold the remote (a stick by default). That means you can bind them to keys vanilla already uses: while you hold the remote, the Heavymatica key acts and the vanilla action doesn’t; without the remote, the vanilla action works as usual.

Keys of other mods are a different story. If one key does two things, check Options → Controls for a key another mod also uses, and move one of them. See Compatibility.

Shift variants

Some keys do something different while you hold Shift. This keeps working after you rebind them, since Heavymatica checks Shift when you press the key:

• Rotate placement: Shift rotates the other way.
• Cycle layer mode: Shift cycles back.
• Move placement keys: Shift moves 10 blocks at a time instead of 1.

All keys

Action	Default key	When it acts
Open schematic library	H	In the game, with no screen open.
Move placement away	Up arrow	While you hold the remote, and without it while the selected placement is locked.
Move placement closer	Down arrow	While you hold the remote, and without it while the selected placement is locked.
Move placement left	Left arrow	While you hold the remote.
Move placement right	Right arrow	While you hold the remote.
Move placement up	Numpad +	While you hold the remote, and without it while the selected placement is locked.
Move placement down	Numpad -	While you hold the remote, and without it while the selected placement is locked.
Rotate placement (Shift: other way)	R	While you hold the remote.
Mirror placement	M	While you hold the remote.
Open placement wheel	V	While you hold the remote, and without it while a placement is selected (not while capturing).
Remove placement	not bound	While you hold the remote, and without it while a placement is selected (not while capturing).
Lock / unlock placement	not bound	While you hold the remote, and without it while a placement is selected (not while capturing).
Toggle in-hand filter	not bound	While you hold the remote, and without it while a placement is selected (not while capturing).
Open materials	not bound	While you hold the remote, and without it while a placement is selected (not while capturing).
Cycle layer mode (Shift: back)	not bound	While you hold the remote, and without it while the selected placement is locked.
Swap active capture corner	not bound	While you hold the remote.
Toggle Easy Place	not bound	In the game, with no screen open.
Toggle placement restriction	not bound	In the game, with no screen open.

The When it acts column tells you when a key does something:

• In the game, with no screen open: anywhere in a world, whatever you hold.
• While you hold the remote: only with the remote in your main hand.
• Without it while the selected placement is locked: the layer keys also work without the remote once you have locked the selected placement. On a locked placement, the up and down arrows and numpad + and - change the layers instead of moving it.
• Without it while a placement is selected: the wheel and its actions also work without the remote while a placement is selected, but not while you are capturing.

A key that seems to do nothing usually doesn’t apply right now: you aren’t holding the remote, no placement is selected, or the placement is locked and can’t move. See Troubleshooting.