Your first build

This page takes you through one whole build, start to finish. Every step links to a page with the details.

You need Heavymatica installed and at least one schematic in your library. If the library is empty, it opens on the import screen, which lists the files in your schematics folder. See Import and export or Capture.

1. Pick a schematic

1. Join a world and press H to open the library.
2. Click a schematic card. Its details show on the side.
3. If it is a cloud schematic with several versions, pick the version you want.
4. Click Place.

The library closes. More about the library on Library.

2. Hold the remote

Placements are controlled with the remote. By default that is a plain stick in your main hand. No special item is needed, so it works on any server.

If you clicked Place without the remote in your hand, a message says Hold a Stick to place. Take a stick into your main hand and the ghost appears.

While you hold the remote, a panel on the left shows the selected placement, and the bottom-right corner lists the keys you can use right now. See The remote.

3. Put it down

The new placement is following: its ghost sits on whatever block you look at, up to 64 blocks away.

1. Look at the spot where the build should stand.
2. Press R to rotate it 90° (Shift + R turns the other way) and M to mirror it.
3. Press Numpad + or Numpad - to raise or lower it against the block you look at.
4. Right-click to anchor it. It stays there and stops following your crosshair.

4. Fine-tune the position

With the placement anchored, nudge it into place:

• The arrow keys move it one block, relative to where you look: ↑ away from you, ↓ towards you, ← and → sideways. Hold Shift to move 10 blocks.
• Numpad + and Numpad - move it up and down.
• R and M still rotate and mirror it.
• Sneak and right-click to pick it up again. It follows your crosshair until you right-click once more.

See Placing and moving for everything about moving, selecting and removing placements.

5. Lock it

When the position is right, lock the placement so it can’t move by accident:

1. Hold V to open the placement wheel.
2. Point the mouse at Lock and let go of V.

A locked placement starts comparing itself with the world. Blocks you have already built disappear from the ghost, and mistakes get coloured boxes. The panel shows your progress in percent.

6. Pick layers

A big ghost is hard to build in. Show only part of it:

1. Open the wheel with V and pick Layers.
2. Pick From-to to show a fixed range of layers, or Follow feet to show the layers up to just above your feet.
3. In From-to, ↑ and ↓ move the range and Numpad + / Numpad - make it taller or shorter.

On a locked placement these layer keys also work while you hold blocks instead of the remote. See Layers, including the in-hand filter that shows only the blocks you are holding.

7. Build

Now build in survival or creative as you normally would. Fetch the blocks you need: the wheel’s Materials opens a list of what is still short. See Materials.

Some helpers, all optional:

• Middle-click a ghost within reach to put its block into your hand.
• Easy Place: right-click a ghost with its item and the block lands exactly as planned.
• Creative paste: in your own creative world, paste the whole build at once.

8. Follow your mistakes

The locked placement marks every position that doesn’t match the plan:

Box colour	Meaning
Red	Wrong block
Orange	Wrong orientation, too many, or not enough yet
Cyan	Wrong waterlogging
Yellow	Needs finishing, for example with a shovel or an axe
Magenta	Extra block where the plan has air

Look at a ghost or a boxed block and a small HUD under the crosshair says what belongs there and what is wrong. To find the next mistake on a large build, turn on the mistake pointer: open the wheel, pick Options, then Mistakes. See World comparison.

9. Finish

When every block matches, the placement finishes on its own: a sound plays, a toast names it, and the placement is removed. Changed your mind? Open the wheel within 10 seconds and pick Bring back to get it back, still locked.