What’s the fastest way to fix a bad 3D print?

Run Diagnose, identify the defect category, then use the recommended tool to calibrate (flow/temp/retraction/motion). Change one thing at a time and re-test.

Do I need to recalibrate for every filament?

Often yes. Filament brands and colors vary. Re-check temperature and flow when you switch materials or a new spool behaves differently.

Fix My 3D Print — Diagnose, Defects, and Tools

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Fix My Print

Pick your symptom, jump to the exact fix page, then use the tool that dials it in.

Run Diagnose Open Tools Complete Fix Guide

Common Print defects

Under-Extrusion

Thin or missing lines, weak walls, gaps between infill and perimeters.

Over-Extrusion

Bulging walls, messy surfaces, poor dimensional accuracy.

Stringing / Oozing

Hair-like strings between parts and travel paths.

Blobs & Zits

Random bumps on walls, pimples, surface acne.

Elephant Foot

First layer squish causing flared bottoms and poor fit.

Ringing / Ghosting

Echo ripples after corners and details.

Layer Shift

Sudden offsets in X/Y creating stair-stepped prints.

Warping / Corner Lift

Corners lifting off the bed, curled edges.

Poor Bed Adhesion

First layer not sticking reliably.

Nozzle Clog

Under-extrusion, clicking extruder, inconsistent flow.

Z-Banding / Z-Wobble

Periodic waves or bands aligned with Z movement.

Inconsistent Layers

Layer thickness changes, rough walls, random artifacts.

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Common Print defects

Most-Used Calibration Tools