A clean build plate is the foundation of every great print. Fingerprints and dust cause first-layer failures.

Tools: Warm water, Dish soap, Microfibre cloth

1. 1. Pop the plate out
   Wait until the bed is cool, then flex the spring-steel plate and lift it off the magnetic base.
   Why: Fingerprints are 90% of all first-layer problems. Treat the plate like a camera lens.
2. 2. Wash with warm soapy water
   Use a drop of regular dish soap and warm water. Skip the IPA — it lifts oils but leaves a residue over time.
   Tip: Hold the plate by the edges so your fingers never touch the print surface.
3. 3. Pat dry and re-seat
   Dry with a clean microfibre cloth (no kitchen towel — it sheds lint), then drop the plate back onto the base.

Remove hardened plastic and carbon buildup from the nozzle and silicone sock before it ruins your next print.

Tools: Brass brush, Heat-resistant gloves

1. 1. Preheat to 220 °C
   From the screen: Devices → Temperature → set the nozzle to 220 °C. Soft plastic comes off; hardened plastic just smears.
2. 2. Brush gently, sideways
   Glove on. Use the brass brush across the tip in short strokes — never poke straight at it.
   Why: Brass is softer than the hardened steel nozzle, so it won't scratch it.
3. 3. Inspect the silicone sock
   Look for tears or carbonised lumps. A torn sock = bad temperature stability. Replace it if anything looks ragged.
   Tip: Keep two spare socks in your spares drawer. They cost less than a coffee.

A quick monthly lube of the X and Y rods keeps the toolhead gliding smoothly and prevents premature bearing wear.

Tools: Bambu lubricant (or Super Lube), Lint-free cloth

1. 1. Power off the printer
   Always. The toolhead should glide freely by hand.
2. 2. Wipe the rods clean
   Run a lint-free cloth along each rod to remove the old grey film. Old grit is what wears bearings out, not movement.
   Why: If the cloth comes off black, you waited too long. Aim for monthly.
3. 3. Apply two small drops per rod
   One near each end of each rod. Slide the toolhead back and forth a few times to spread it.
   Tip: Less is more. A thick layer attracts dust and turns into a grinding paste.

Loose belts cause ghosting and ringing in prints. Check tension monthly and adjust only if they feel obviously slack.

Tools: Your ears, Optional: belt-tension app

1. 1. Open the front door
   Push the toolhead to the centre so you can reach the belts on the back and side.
2. 2. Pluck each belt like a guitar string
   It should give a clear note, not a dull thud. Bambu's stock tension is around 110 Hz — close enough is fine.
3. 3. Adjust only if obviously slack
   Loosen the small tensioner screws, slide gently, re-tighten. Don't crank — over-tension wears out the motor pulleys.
   Why: If you've never adjusted them and the printer still sounds smooth, leave it alone.

Empty the rear purge chute weekly. Overflowing waste blocks the nozzle during purging and wastes filament mid-print.

Tools: Bin

1. 1. Tip out the back tray
   Pull out the small tray at the rear-left and dump the colourful purge poops into the bin.
2. 2. Glance into the chute
   Use a torch. Any wedged blobs get fished out with tweezers before they jam the next purge.
3. 3. Wipe the area
   A quick wipe of the surrounding panel keeps stray plastic off the build-plate magnets.

Gently clean the LiDAR and camera lenses under the toolhead. Clear optics mean reliable first-layer scanning and AI detection.

Tools: Microfibre swab, Optional: lens cleaner

1. 1. Locate the lenses
   Under the toolhead you'll see two tiny glass windows — the LiDAR scanner and the AI camera.
2. 2. Wipe very gently
   Dry microfibre first. If there's stuck residue, the smallest drop of lens cleaner on the swab — never directly on the lens.
3. 3. Run a calibration print
   From the screen, run 'Auto-calibration'. If first layers were getting weird, this usually fixes it.

Deep lubrication of carbon rods and the lead screw removes gritty buildup and keeps the P2S running whisper-quiet for months.

Tools: Super Lube grease, PTFE oil, Lint-free cloth

1. 1. Power down, then move axes by hand
   Move the toolhead and gantry to the front-right corner to expose the back of the rods.
2. 2. Wipe everything down
   Old grease + carbon dust = the gritty stuff that destroys bearings. Clean it all off first.
3. 3. Grease the lead screw
   A pea-sized blob of Super Lube smeared along the lead screw. Cycle the Z axis up and down via the screen to spread it.
4. 4. Oil the carbon rods
   Two drops of PTFE oil per rod, slide the toolhead/gantry along its full range a few times.
   Tip: Don't mix oil and grease on the same part. Pick one type per surface.

Filament dust compacts in the extruder gear teeth and causes under-extrusion. Brush it out before prints start looking patchy.

Tools: Brass brush, Hex key, Tweezers

1. 1. Unload filament
   From the AMS or the toolhead — make sure nothing is in the path.
2. 2. Open the side cover of the toolhead
   Two screws on the side panel. The drive gear is the small toothed wheel inside.
3. 3. Brush out the teeth
   Brass brush, gentle strokes. Tweezers for stubborn flakes. Don't blow into it — moisture is the enemy.
   Why: If you see shiny metal teeth again, you got it. If it still looks fuzzy, keep brushing.
4. 4. Close everything up
   Re-seat the panel, screw it back, and reload filament.

Swap a worn or clogged hotend in minutes. The P2S quick-release clip makes nozzle changes far faster than on older printers.

Tools: Replacement hotend, Heat-resistant gloves

1. 1. Preheat & unload filament
   On the screen choose 'Replace nozzle' — it walks you through preheat and unload automatically.
2. 2. Let it cool to safe temperature
   Wait for the screen to tell you it's safe. Don't rush this part.
   Why: A 180 °C nozzle still leaves serious burns. Patience or gloves — pick one.
3. 3. Release the clip and pull the hotend straight down
   The P2S uses a quick-release clip. Squeeze, the hotend drops out cleanly.
4. 4. Slot the new one in
   Push up until it clicks. Confirm the new nozzle size on the screen so flow rates stay accurate.

Dust-coated part-cooling fan blades kill airflow and ruin overhangs. A quick brush restores crisp bridge and overhang cooling.

Tools: Soft brush, Compressed air (optional)

1. 1. Power off completely
   Spinning fan blades + brush = bent blades. Always off.
2. 2. Brush the blades from the front
   Hold each blade still with one finger while brushing — spinning them backwards by hand stresses the bearing.
3. 3. Blow out the grille (optional)
   Short bursts of compressed air. Long bursts spin the fan way too fast and damage it.

Replace the activated-carbon chamber filter once a year to absorb fumes and keep your workspace smelling fresh.

Tools: Replacement filter

1. 1. Find the filter door
   Back of the printer, small magnetic panel — pops open with a fingernail.
2. 2. Pull the old filter out, slide the new one in
   It only goes in one way around. Arrow points toward the chamber.
3. 3. Note the date
   Stick a small label on the printer with today's date so future-you remembers.
   Tip: Replace yearly with normal use, every 6 months if you print ABS / ASA daily.

Check the desiccant monthly. Saturated beads let moisture ruin filament, causing bubbles, weak layers, and failed prints.

Tools: New desiccant or oven

1. 1. Pop the AMS lid
   Lift the lid and pull out the small desiccant cartridges from each slot.
2. 2. Check the indicator
   If the colour beads have gone pink, the desiccant is saturated. Time for action.
   Why: Blue / orange = dry. Pink / green = saturated. Easy.
3. 3. Regenerate (oven) or replace
   Oven at 120 °C for 2 hours regenerates them. Or just drop in fresh beads — cheaper than your time, honestly.

Clean the AMS feed rollers quarterly. Dust and residue make them slip, causing inconsistent filament loading mid-print.

Tools: IPA, Cotton swab

1. 1. Unload all filaments first
   Use the screen → AMS → unload all. Don't yank anything by hand.
2. 2. Wipe each roller with IPA
   Cotton swab dampened with IPA, rotate each roller by hand as you wipe. Look for filament dust collecting in the grooves.
3. 3. Let it dry, then reload
   Two minutes of air drying, then reload your spools and run a small test print.

Inspect the AMS cutter blade and PTFE tubes. A dull cutter or grooved tube causes filament jams and wasted prints.

Tools: Tweezers, Torch

1. 1. Open the AMS hub
   Remove the cover near the PTFE outputs.
2. 2. Check the cutter blade
   Look for a clean V-shape. Burrs or rounded edges = time to replace the cutter assembly (cheap part).
3. 3. Check the PTFE for grooves
   Old PTFE develops grooves that snag filament. Replace if you see deep score marks.
   Tip: Keep a spare PTFE tube and cutter in your spares drawer. Both are very cheap and avoid a 2-hour debugging session.

Nozzle is clogged

The nozzle stops extruding entirely or produces thin, stringy filament. Carbonised gunk or wet filament is usually the culprit.

Likely causes: Carbonised filament inside the hotend; Wet filament expanding; Wrong temperature for the material

1. 1. Run a cold pull
   Heat to 220 °C, push a piece of cleaning filament in, drop the temp to 90 °C, then pull it out hard. It brings the gunk with it.
2. 2. Swap to a fresh nozzle
   On the P2S, this is a 2-minute job. If the clog returns immediately, the issue is upstream — check filament and feed gear.
3. 3. Dry the filament
   12 hours in a filament dryer at the right temperature for your material. Wet PLA hisses; wet PETG bubbles.

First layer won't stick

Corners lift off the plate, lines look gappy, or the whole first layer drags behind the nozzle. Grease and wrong Z offset are common causes.

Likely causes: Greasy plate; Wrong Z offset; Cold plate for the material

1. 1. Wash the plate
   Warm soapy water, not IPA. See the 'Clean the build plate' task — fingerprints are the usual culprit.
2. 2. Re-run auto-calibration
   From the screen, choose 'Calibration → Full'. Let it do its thing, don't touch the printer.
3. 3. Match plate temperature to filament
   PLA: 55–65 °C, PETG: 70–80 °C, ABS/ASA: 100 °C. Cold plate, sad layer.

Ghosting / ringing in prints

Echoes and repeating ripples appear next to sharp corners. Loose belts or a wobbly table let the toolhead vibrate and leave ghosts.

Likely causes: Loose belts; Printer on a wobbly surface; Speed too high for the model

1. 1. Check belt tension
   See the belt-tension task. Pluck them like guitar strings — both should ring similarly.
2. 2. Solid surface
   Move the printer to a sturdy table. Ikea Lack works famously well for this.
3. 3. Lower the outer-wall speed
   Drop outer-wall speed to 60–80 mm/s in the slicer. Internal walls can stay fast.

Stringing & blobs

Fine hairs and small zits appear on travel moves and surfaces. Wet filament and incorrect retraction or temperature are the usual suspects.

Likely causes: Wet filament; Retraction too short; Temperature too high

1. 1. Dry the spool
   Even 'new' filament can be wet. Dry for 6–12 hours.
2. 2. Run a temperature tower
   Bambu Studio has one built-in. Pick the lowest temperature that still bonds cleanly.
3. 3. Bump retraction by 0.2 mm
   Small steps. Going crazy with retraction causes clogs.

AMS feed errors

The AMS refuses to load filament or throws errors during mid-print changes. Tangled spools, worn cutters, and brittle tips cause most failures.

Likely causes: Tangled spool; Worn cutter; Brittle filament tip

1. 1. Cut the filament tip cleanly
   Snip at a 45° angle. Mangled tips snag every time.
2. 2. Untwist the spool
   Open the AMS, find the spool, gently rewind any crossed-over loops.
3. 3. Service the cutter & rollers
   See the AMS upkeep tasks. A blunt cutter causes most repeat errors.