The questions every operator asks.

Not Printable means the machine will never print that item:

• It has no Filament Unit value and you're in strict mode (the default) — un-priced items can't be printed.
• It's a filament spool or a restricted trophy — the printer never duplicates those.
• It's wind-only treasure — saddles, name tags, wither skulls, and the dragon egg recycle into Filament Units at the Winder but never print back.

A material that's simply above the machine's tier — e.g. Tier 3 string in a Tier 2 printer — shows Requires a Tier N Printer instead; just use a higher-tier machine. To price unknown blocks, set unknownBlocksPrintable=true in the config.

For a structure print, the machine doesn't refuse the whole job over a few bad blocks — it skips any block it can't print (too high a tier, or un-priced) and builds everything else.

Only an item print, or a structure where nothing is printable, shows Not Printable outright.

Use the X / Y / Z offset steppers in the printer GUI. They shift the build area relative to its default position (centered directly above the printer). Each axis is capped at ±32 blocks — enough to place a build beside or above the machine without printing into the printer itself.

The Rotate button spins the whole print 90° clockwise per tap (0 → 90 → 180 → 270). Everything turns with it — a north-facing door comes out facing east. Rotation pivots around the build's center, so your offsets are never touched, and the ghost preview updates live so you can line it up before you print.

Auto defaults OFF. With Auto off, loading a disc only arms the printer (Ready) — press Start (or pulse redstone) to begin. A manual Start prints one item, or runs one structure job.

Flip Auto ON and the printer starts the moment a printable disc or item lands, and keeps going. If a print began on its own, Auto is on.

Yes — the mod ships two optional built-in styles: Blueprint Mode (every machine as its own schematic: blueprint blues and white line-work) and Dark Mode (matte near-black, glow and tier colors stay loud).

Enable one under Options → Resource Packs: move MC3DPrint: Blueprint Mode or MC3DPrint: Dark Mode to the Selected side and click Done. Move it back to return to the default art. Each release also attaches the styles as standalone resource-pack zips. Details in the Alternate styles guide page.

Two ways:

• Scan your own builds with the Structure Scanner — right-click two opposite corners, then scan with a Blank Blueprint Disc anywhere in your inventory.
• Find curated discs in village and exploration loot — print what you find, no scanning required.

Server operators can also import .schem / .litematic / .nbt files with /mc3dprint import. In Creative, a config toggle (allowAllDiscsInCreative) lists every curated disc the mod ships.

A few curated builds are cross-mod: the six-ride Coppertide Park set is built from MC Waterslides blocks and only shows up (creative and loot) when that mod is installed. Details on the Blueprint Discs page.

Yes. Every tier's print footprint is a config value — maxFootprint under each [tierN] section of mc3dprint-common.toml. The defaults run 3×3 (Tier 3) up to 51×51 (Tier 8), but you can raise any tier as high as 1000×1000 if you want a truly ludicrous print area. The same cap governs Deconstruct regions, and Build Too Large / Requires a Higher Tier statuses follow whatever you configure.

One caveat: a running print keeps its whole build area chunk-loaded until the job finishes, so giant footprints carry a matching server-performance cost.

Yes — it's an open bounty. Open any build in the gallery and use "Add a screenshot": paste a direct image link (imgur, catbox, etc.), add your handle, and submit. No GitHub account needed.

Every submission is reviewed before it appears — appropriate, on-topic shots get published on the build's page, in submission order, and credited to your handle in the repo. Builds without a screenshot yet show a "📷 Screenshot wanted" badge. You can send up to two per build per day, so there's no need to race to be first.

Each printer has upgrade slots that grow with its tier (Tier 3 has 3, topping out at 8 slots). Drop modules into those slots in the GUI, or Shift+Right Click them onto the machine.

Speed, Efficiency, RF Efficiency, and Buffer modules stack — Speed, RF, and Buffer multiplicatively (two Speed modules give 0.8 × 0.8 = 64% print time), Efficiency linearly (four modules reach exact 1:1 break-even). You can install at most 4 of any one type. See Upgrade modules for the full breakdown.

Check the status line — every pause is recoverable, and the job resumes where it left off once you fix the cause:

• No Power — feed it more RF.
• No Filament — dock a fuller or higher-tier spool.
• Output Full — clear the bottom output slot.
• Obstructed — clear the build area. The printer never overwrites existing blocks; it only fills empty space.