How to Fix Warping in 3D Prints — Best Solutions (2026)

Knowing how to fix warping in 3D prints is one of the most valuable troubleshooting skills you can develop as an FDM hobbyist. Warping looks like this: your print starts perfectly, the first few layers go down cleanly, and then — somewhere between layer 5 and layer 50 — the corners begin to lift. The base curls away from the build plate. By the time you notice, the print has either detached entirely or produced a permanently distorted base that ruins the final object. Hours of print time lost.

Warping happens because of a fundamental property of thermoplastic materials: they shrink as they cool. When a layer of hot plastic is deposited on the build plate and begins to cool, it contracts. If the cooling is uneven — which it almost always is on open-frame printers — different parts of the print cool and contract at different rates. The resulting internal stress pulls the edges and corners of the print upward, breaking adhesion with the build surface.

The good news: warping is one of the most solvable print quality problems in FDM printing. Every cause has a direct fix, and most warping issues resolve completely once you identify which factor is driving the failure. This guide on how to fix warping in 3D prints covers every cause and every fix — across all common FDM materials and printer types — so you can diagnose your specific warping problem and eliminate it permanently.

If you’re dealing with other print quality issues alongside warping, our 3D Printing Troubleshooting Guide covers the full spectrum of common FDM failures in one place. For bed adhesion problems specifically — prints that never stick in the first place rather than lifting after a few layers — see our dedicated guide on how to fix 3D print not sticking to bed.

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What Causes Warping in 3D Prints?

Understanding the root cause of warping makes every fix more intuitive. Warping is always caused by one or more of these factors:

Thermal contraction: The primary cause. Hot plastic shrinks as it cools. The larger the temperature difference between printing temperature and ambient temperature, the more dramatic the contraction — and the more stress placed on the print’s adhesion to the build surface. This is why ABS warps more aggressively than PLA: ABS prints at higher temperatures and shrinks more per degree of cooling.

Uneven cooling: When different parts of a print cool at different rates, internal stresses develop. Corners cool faster than centers because they have more surface area exposed to ambient air. This is why warping almost always starts at corners rather than flat edges — the corners experience the highest thermal gradient.

Insufficient bed adhesion: Even modest warping forces can overcome weak bed adhesion. A perfectly calibrated bed with the right surface and temperature dramatically increases the force required to lift a print. Weak adhesion means even small thermal stresses cause lifting.

Ambient airflow: Drafts, fans, air conditioning, and open windows create localized cooling that accelerates thermal contraction on the side of the print facing the airflow. This produces asymmetric warping — one side lifts while the other stays flat — which is often a sign of directional airflow rather than a bed adhesion problem.

Material shrinkage rate: Different materials shrink different amounts. ABS has a high shrinkage rate — approximately 0.5–0.8%. PETG shrinks significantly less. PLA shrinks the least of the common FDM materials. Higher shrinkage rate = more warping force = more difficult to manage without an enclosure.

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Warping vs Other Print Failures — How to Diagnose Correctly

Before applying fixes, confirm you’re actually dealing with warping rather than a different failure mode that looks similar:

Warping: Corners or edges of the print lift away from the build plate during or after printing. The print may detach completely or remain partially attached with a curved base. The print itself is otherwise intact — layers are bonded, the geometry is correct, just the base has lifted.

Poor bed adhesion (no warp): The entire print detaches from the bed in one piece, without curling. This indicates a first-layer adhesion problem rather than a thermal contraction problem. See our bed adhesion guide for fixes specific to this failure mode.

Layer separation: The print stays on the bed but splits horizontally between layers mid-print. This is a layer adhesion problem caused by printing temperature, speed, or cooling — not warping. Our Troubleshooting Guide covers layer separation specifically.

Elephant foot: The first few layers of the print are wider than they should be, creating a visible flange at the base. This looks like warping but is actually caused by over-squished first layers or excessive bed temperature — fix it by adjusting Z-offset and bed temperature, not warping solutions.

Confirmed it’s warping? Here are the fixes.

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How to Fix Warping in 3D Prints — 10 Proven Solutions

Fix 1 — Calibrate Your First Layer

The single most impactful warping fix is also the most fundamental: a perfectly calibrated first layer. The first layer is your print’s foundation — it determines how much surface area of molten plastic contacts the build surface, how well that plastic flows into the texture of the bed, and how strongly the print resists lifting forces throughout the rest of the job.

A first layer that’s too high doesn’t press the filament into the build surface adequately, producing weak adhesion that warping forces easily overcome. A first layer that’s too low drags and smears the filament, which can also reduce adhesion and cause the nozzle to peel up the first layer on subsequent passes.

The target: a first layer that’s slightly squished into the build surface — you should see the filament lines flattening slightly and bonding cleanly with the layer below. On Bambu Lab printers, the automatic bed leveling and first layer calibration handles this reliably — run a lidar calibration before any ABS or PETG print where warping is a concern. On other printers, use a live Z-offset adjustment during the first layer of a test print to dial in the correct height.

Fix 2 — Clean Your Build Surface

Bed adhesion fails when there’s contamination between the filament and the build surface. Skin oils transferred by handling the plate with bare hands are the most common contamination source — and the most overlooked. A single fingerprint on a PEI surface can cause localized adhesion failure that produces corner lifting on an otherwise well-configured print.

Clean your build surface with 90%+ isopropyl alcohol (IPA) before every critical print — especially after handling the plate. Use a lint-free cloth or paper towel, wipe in straight lines rather than circles, and allow the surface to dry completely before starting the print. For stubborn residue from PETG or ABS, a more thorough wash with dish soap and warm water removes contamination that IPA alone may not fully dissolve.

Don’t touch the cleaned build surface with bare hands between cleaning and printing. Handle the plate by its edges only.

Fix 3 — Increase Bed Temperature

A heated build plate slows the cooling rate of the first layer and maintains a higher temperature at the print-bed interface throughout the print, reducing the thermal gradient that drives warping. This is one of the most effective single-setting fixes for warping on materials that require it.

Recommended bed temperatures by material:

• PLA: 55–65°C. PLA doesn’t strictly require a heated bed, but 60°C significantly improves adhesion and reduces corner lifting on larger prints.
• PETG: 70–85°C. PETG adheres aggressively to most surfaces — the bed temperature is less critical for adhesion and more important for managing the release after printing.
• ABS: 100–110°C. ABS requires a hot bed. Below 100°C, ABS warping is almost guaranteed on prints of any significant size.
• TPU: 40–60°C. TPU is relatively warp-resistant but benefits from a warm bed for first-layer adhesion.

If you’re already using these temperatures and still seeing warping, increase by 5°C increments and test. On enclosed printers like the Bambu Lab P1S, the active chamber heating works in concert with bed temperature to significantly reduce ABS warping — the combined effect is more powerful than bed temperature alone.

Fix 4 — Use the Right Build Surface

Not all build surfaces are equal for warping resistance, and the wrong surface for your material is a common cause of persistent warping problems despite correct temperature settings.

Textured PEI: The best all-around build surface for PLA and PETG. Provides excellent grip when hot, releases cleanly when cool. PETG can bond too aggressively to textured PEI — a light application of glue stick or hairspray acts as a release agent while maintaining adhesion. Bambu Lab’s textured PEI plates are pre-treated for optimal performance with their hardware.

Smooth PEI: Works well for PLA and TPU. Less grip than textured PEI, which can actually be better for PETG (easier release) and worse for ABS (less grip for large prints).

Glass: Consistent and flat, but requires adhesion aid (hairspray, glue stick) for most materials. Produces an extremely smooth bottom surface on prints.

Garolite (FR4): The preferred surface for Nylon and engineering filaments. Nylon bonds to garolite naturally without adhesion aid.

For ABS specifically: a clean, hot textured PEI surface at 105–110°C with a light skim coat of glue stick is the most reliable bed configuration. The glue stick creates a slightly rough, adhesion-friendly surface layer that ABS grips well and releases from more cleanly after cooling than bare PEI.

Fix 5 — Add a Brim

A brim is a single-layer extension printed around the base perimeter of your model. It doesn’t add height — it just extends the footprint of the print on the build plate, dramatically increasing the surface area bonded to the bed and the mechanical resistance to corner lifting.

Brims are one of the most effective and lowest-cost warping fixes available. In Bambu Studio, configure brim settings in the Others tab of the Process panel:

• Brim type: Auto (Bambu Studio selects the appropriate brim automatically), Outer brim only, Inner brim only, or Both. For warping, Outer brim only is typically the right choice.
• Brim width: 5mm is the default and works for moderate warping. Increase to 8–10mm for larger prints or highly warp-prone materials like ABS.
• Brim-object gap: 0.1mm default. Increase slightly if brim removal is difficult on your material.

Brims add minimal print time and material, and they remove cleanly with flush cutters on most materials. For ABS and ASA, a wider brim (8–10mm) is often the difference between a successful print and a warped failure. For PLA on smaller prints, even a 3–5mm brim resolves most corner lifting.

One consideration: brims leave a slight line around the base of the print that requires cleanup. For prints where a perfectly clean base is important, a raft (covered below) or enclosure may be preferable.

Fix 6 — Use a Raft

A raft is a multi-layer flat structure printed beneath the entire model. It’s a more aggressive solution than a brim — it increases the surface area in contact with the build plate across the entire footprint of the print, not just the perimeter, and isolates the model from the build surface so any warping forces act on the raft rather than the model itself.

Rafts are particularly useful for:

• Models with very small footprints that don’t provide enough base area for stable adhesion
• ABS prints on printers without active enclosure heating where other fixes haven’t resolved warping
• Models with complex base geometry that doesn’t sit flat on the build plate

Configure rafts in Bambu Studio’s Support tab under the Raft section. Set Raft layers to 2–3 for most applications. Rafts add significant print time and material overhead compared to brims and require removal after printing. For most warping problems, try a brim first — use a raft only when a brim isn’t sufficient.

Fix 7 — Eliminate Ambient Airflow

This fix is frequently overlooked and disproportionately effective. Ambient airflow — from air conditioning, fans, open windows, or HVAC vents — creates localized cooling on whatever side of the print faces the air source. This accelerates contraction on one side of the print relative to the other, producing asymmetric warping that appears even when all other settings are correct.

If you’re seeing warping that’s worse on one side of the print than the other, airflow is almost certainly a factor. Solutions:

• Move the printer away from air conditioning vents, fans, and windows
• Print with doors and windows closed in the printing room
• Add a simple enclosure (cardboard box, acrylic panels, or a purpose-built enclosure kit) around an open-frame printer to shield it from ambient airflow
• On enclosed printers, ensure the enclosure panels are fully closed before starting the print

This fix costs nothing and takes 30 seconds to implement. It should be one of the first things you check when troubleshooting warping — particularly if the problem appeared suddenly after a seasonal change (more AC in summer, windows open in spring).

Fix 8 — Use an Enclosure

For ABS, ASA, and other high-shrinkage engineering filaments, an enclosure isn’t a nice-to-have — it’s functionally required for reliable printing. An enclosure maintains a consistent elevated temperature throughout the print chamber, dramatically reducing the thermal gradient between the hot plastic being deposited and the ambient environment around the print.

Without an enclosure, ABS cools rapidly as it’s deposited, producing aggressive contraction forces that overwhelm most other fixes. With an enclosed chamber at 40–50°C, ABS cools slowly and uniformly, and the warping forces are dramatically reduced.

Enclosed printer options at different price points:

Bambu Lab P1S: The most capable enclosed consumer FDM printer available at its price point. Active chamber temperature control (heats the enclosure to a set temperature), HEPA + carbon filtration for ABS fumes, and Bambu Studio profiles that handle ABS out of the box. The P1S is the printer we use for ABS printing and it handles the material with minimal warping even on large flat prints. Our Best Multi-Color 3D Printers guide covers enclosed printer options in detail.

Creality K2 Combo: Enclosed CoreXY with CFS multi-color capability. Strong ABS performance at a lower price point than the P1S. Our Creality K2 Combo review covers its ABS performance in depth.

DIY enclosure: For open-frame printers, an enclosure kit or even a purpose-built cardboard box dramatically improves ABS printability. Not as effective as an active-heated enclosure, but significantly better than completely open printing.

Fix 9 — Dry Your Filament

Moisture-contaminated filament warps more aggressively than dry filament. Here’s why: wet filament produces micro-bubbles of steam during printing that cause inconsistent extrusion and weaker inter-layer bonding. Weaker layer bonding means the print structure is less rigid and more susceptible to the pulling forces created by thermal contraction — the print can’t resist warping the way a properly bonded dry-filament print can.

This is particularly significant for PETG, ABS, and Nylon — all highly hygroscopic materials that absorb moisture rapidly from ambient air. If you’ve been storing filament in a humid environment or it’s been sitting open for more than a few hours, drying before printing is worth the time investment.

Dry temperatures and times by material:

• PLA: 45–55°C for 4–6 hours
• PETG: 55–65°C for 4–6 hours
• ABS: 65–70°C for 4–6 hours
• TPU: 45–55°C for 4–6 hours (don’t exceed 60°C)

The Creality Space Pi filament dryer — which I use daily — has a dedicated PETG setting and handles ABS drying reliably at 65–70°C. For multi-spool setups where you’re drying multiple materials simultaneously before a long print session, the Creality Space Pi X4 runs four independent chambers at different temperatures simultaneously. Our full Best Filament Dryers guide covers the complete range of options across every budget.

Fix 10 — Adjust Model Orientation and Design

Sometimes the most effective warping fix is rethinking how the model is oriented on the build plate or how it’s designed.

Orientation: Minimize the surface area of flat faces parallel to the build plate. A model printed on its side may have less warping potential than the same model printed flat, even if it requires more supports. Use Bambu Studio’s Auto Orient function as a starting point — it often finds orientations that minimize both overhang area and warping risk simultaneously.

Split large flat prints: Large flat objects — panels, bases, enclosures — have the highest warping potential because the thermal contraction acts across the maximum possible distance. Splitting a large flat print into smaller pieces and assembling after printing is often faster and more reliable than fighting warping on a single large part.

Add mouse ears: Mouse ears are small circular discs added at the corners of flat prints, printed as part of the model. They increase the adhesion surface area specifically at the corners where warping forces are strongest — essentially a targeted brim applied only where it’s most needed. Not available as a built-in Bambu Studio feature, but widely available as printable add-ons on Makerworld for common model types.

Hollow the model: Solid prints have more internal mass cooling and contracting simultaneously than hollow or low-infill prints. Reducing infill percentage reduces the volume of material undergoing thermal contraction, which can meaningfully reduce warping forces on large prints.

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Material-Specific Warping Guide

How to Fix PLA Warping

PLA has the lowest shrinkage rate of common FDM materials and is the most warp-resistant. PLA warping is almost always caused by one of three things: insufficient bed temperature, a contaminated or incorrect build surface, or ambient airflow.

Most effective PLA warping fixes:

1. Clean the build surface with IPA — this alone resolves most PLA warping
2. Set bed temperature to 60°C if not already
3. Add a 5mm brim for prints with small footprints or sharp corners
4. Eliminate airflow drafts near the printer
5. Dry the filament if it’s been sitting open in a humid environment

PLA does not require an enclosure. If you’re seeing severe PLA warping despite clean bed surface, correct temperature, and no airflow, check your Z-offset — a first layer that’s too far from the bed is often the actual culprit misidentified as warping.

For PLA filament recommendations, see our Best PLA Filament for Beginners guide.

How to Fix PETG Warping

PETG warps less than ABS but more than PLA, and it has a specific adhesion quirk that trips up many users: it bonds aggressively to smooth surfaces when hot, which can cause lifting when the bond fails unevenly rather than releasing cleanly as the print cools.

Most effective PETG warping fixes:

1. Use a textured PEI surface at 70–85°C
2. Apply a thin layer of glue stick as a release agent — this prevents PETG from bonding too aggressively while maintaining adhesion
3. Ensure the build surface is clean — PETG is particularly sensitive to contamination
4. Add a 5–8mm brim for larger prints
5. Dry filament before printing — PETG is highly hygroscopic and wet PETG warps more

PETG warping that appears after the print starts is usually a sign of wet filament or contaminated bed surface rather than a temperature or setting issue. Address those two factors first. For PETG filament recommendations, see our Best PETG Filament guide.

One important note for Bambu Lab users: PETG should not be run through the AMS or AMS Lite. Use the external spool holder for all PETG printing. Running PETG through AMS can cause the material to bond inside the mechanism.

How to Fix ABS Warping

ABS is the most challenging common FDM material for warping. Its high shrinkage rate (0.5–0.8%), high print temperature, and sensitivity to ambient airflow make it difficult to print reliably on open-frame printers without specific countermeasures. On enclosed printers with active chamber heating, ABS warping is manageable with the right settings.

Most effective ABS warping fixes:

1. Use an enclosed printer with active chamber heating — this is the most important fix for ABS. Without an enclosure, ABS warping is extremely difficult to prevent on prints of any significant size
2. Set bed temperature to 100–110°C
3. Apply a thin layer of glue stick to textured PEI — significantly improves ABS adhesion
4. Add a 8–10mm brim
5. Dry filament at 65–70°C for 4–6 hours before printing
6. Keep the enclosure sealed during the entire print — never open an enclosure mid-print for ABS
7. Disable the part cooling fan or reduce to 10–20% maximum — aggressive cooling is one of the primary ABS warping drivers

If you’re printing ABS on an open-frame printer and experiencing persistent warping despite a brim and hot bed, the honest answer is that an enclosed printer is the correct tool for this material. Our Best ABS Filament guide covers material selection in detail, and our Bambu Lab P1S review covers the printer we use for ABS production.

How to Fix TPU Warping

Good news: TPU 95A is one of the least warp-prone FDM materials. Its flexibility and relatively low shrinkage rate mean warping forces are absorbed by the material itself rather than transmitted to the build surface. Most TPU warping problems are actually first-layer adhesion failures rather than true thermal warping.

Most effective TPU warping fixes:

1. Use a textured PEI surface at 40–60°C
2. Clean the build surface thoroughly — TPU adhesion is sensitive to contamination
3. Slow the print speed — TPU printed too fast produces inconsistent first layers that fail to adhere properly
4. Dry filament at 45–55°C for 4–6 hours — wet TPU has significantly weaker layer adhesion
5. Add a small brim (3–5mm) if corner lifting occurs

If TPU is lifting consistently from the build surface, check that you’re using a direct drive extruder and that print speed is appropriate (20–40mm/s for standard TPU). For TPU filament recommendations, see our Best TPU Filament guide.

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Brim vs Raft vs Enclosure — Which Fix Should You Use?

These three tools address warping differently and are appropriate in different situations:

Use a brim when: The print is warping at the corners or edges of a flat base, the material is PLA or PETG, and other settings (bed temp, clean surface) are already correct. A brim is the first mechanical fix to reach for — it’s fast, uses minimal material, and resolves the majority of corner-lifting issues. Start with 5mm and increase if needed.

Use a raft when: A brim isn’t sufficient, the model has a very small footprint that doesn’t provide stable adhesion, or the base geometry is complex and doesn’t sit flat. Rafts use more material and time than brims but provide a stronger foundation across the entire print footprint.

Use an enclosure when: You’re printing ABS, ASA, or other high-shrinkage engineering filaments, and warping persists despite brim, hot bed, and glue stick. The enclosure addresses the root cause of ABS warping (ambient cooling) rather than just increasing adhesion to fight the symptoms. For serious ABS printing, an enclosed printer is the correct solution — not a larger brim.

The decision framework: try bed surface + temperature + brim first. If warping persists, add a raft. If you’re printing ABS or ASA and warping persists despite both, the printer itself is the limiting factor — an enclosure is the fix.

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Bambu Lab-Specific Warping Tips

Bambu Lab printers have several features that specifically address warping, but they require correct configuration to work effectively:

Run lidar calibration before ABS and PETG prints. Bambu Lab’s lidar-based bed leveling compensates for surface irregularities that can cause uneven first layers — and uneven first layers are a significant warping risk factor. Running a fresh calibration before any critical print on the P1S or H2C ensures the first layer is as even as possible across the full build surface.

Enable chamber temperature control on P1S and H2C. These printers have active enclosure heating — set a target chamber temperature (40–45°C for ABS) before starting the print. This feature is disabled by default and must be enabled in the slicer or from the printer’s touch screen.

Use the correct build plate for your material. Bambu Lab sells multiple build plate types — the textured PEI plate for PLA and PETG, and the high-temperature plate for ABS, ASA, and engineering filaments. Using the wrong plate type for your material is a common cause of persistent warping on Bambu Lab printers despite correct temperature settings.

Keep the enclosure door closed on P1S and H2C. Opening the enclosure door during an ABS print immediately drops the chamber temperature and creates a significant warping risk. If you need to check a print, pause first and allow the chamber temperature to restabilize before resuming.

For a full overview of Bambu Studio’s settings including brim and raft configuration, see our Bambu Studio Beginner’s Guide and our dedicated Bambu Studio Support Settings guide.

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Warping Troubleshooting Checklist

Use this checklist in order when diagnosing a warping problem — it covers everything you need to know about how to fix warping in 3D prints:

1. ✅ Build surface clean? Wipe with IPA before every print
2. ✅ Correct build surface for material? Textured PEI for PLA/PETG, high-temp plate for ABS
3. ✅ Bed temperature correct? PLA 60°C, PETG 70–85°C, ABS 100–110°C
4. ✅ First layer calibrated? Run lidar calibration on Bambu printers, check Z-offset on others
5. ✅ Ambient airflow eliminated? No drafts, AC vents, or open windows near the printer
6. ✅ Brim enabled? At least 5mm for most materials, 8–10mm for ABS
7. ✅ Filament dry? Dry PETG, ABS, TPU before printing
8. ✅ Part cooling fan reduced? For ABS: 0–20%. For PETG: 20–50%
9. ✅ Enclosure used for ABS/ASA? Open-frame printers cannot reliably print ABS without an enclosure
10. ✅ Model orientation optimized? Minimize large flat surfaces parallel to the build plate

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Final Thoughts

Knowing how to fix warping in 3D prints is a troubleshooting skill that pays dividends across your entire printing career. Warping is common, frustrating when it happens, but almost always solvable once you correctly identify which factor is driving the failure. Work through the checklist above in order — the most common causes are at the top, and each fix is simple to implement.

The key to how to fix warping in 3D prints comes down to identifying the root cause — for most PLA and PETG warping, a clean build surface, correct bed temperature, and a brim resolve the issue completely. For ABS, the enclosure is the real fix — everything else is a workaround. And for any material, dry filament is the foundation that makes everything else work better.

If you still need help with how to fix warping in 3D prints after working through this guide, our complete 3D Printing Troubleshooting Guide covers every common FDM failure mode alongside warping. And if you’re shopping for a printer specifically to handle ABS or other engineering filaments reliably, our Best Bambu Lab Printers guide and Best Multi-Color 3D Printers guide cover the enclosed options in detail.

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Frequently Asked Questions

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