Print Doctor: 3D Print Fix

Print Doctor helps you find out why a 3D print failed, what to change first and whether the fix worked. It separates what is visible from what is likely, ranks the probable causes and suggests the smallest useful experiment instead of changing ten settings at once. DIAGNOSE FROM PHOTOS Take or choose photos of the print, add printer, filament and settings (or read them from your G-code or 3MF file) and tick the defects you see. Print Doctor checks photo quality, combines everything into one result and tells you which extra photo would help most. A STRUCTURED, HONEST RESULT - Primary finding with a confidence level, never fake percentages - What the evidence shows and what speaks against it - Likely causes, adjusted to your material and settings - Try this first: one concrete step with safe ranges, risk and how to verify it - Where to change it in Bambu Studio, OrcaSlicer, PrusaSlicer or Cura - Mark what helped: if a fix didn't work, the plan moves on to the next likely cause MORE THAN 35 FDM DEFECTS Stringing, warping, first-layer problems, under- and over-extrusion, layer shifts, Z-banding, ringing, blobs, seams, elephant's foot, bridges, overhangs, supports, spaghetti, clogs, heat creep, wet filament and more. WORKSHOP - Guided calibration: first layer, temperature tower, flow, pressure advance, retraction - Filament guide with temperatures and drying times, plus a drying timer - Maintenance planner with reminders for your printer - Troubleshooting by symptom and error codes (Prusa, Bambu Lab HMS) with the official article ON-DEVICE ASSISTANT On supported phones, a 3D-printing assistant powered by Gemini Nano answers follow-up questions on the device and can read your photos without sending them anywhere. Otherwise the local engine answers from its knowledge base. PRIVATE BY DESIGN - Photos, notes, chats and history stay on your phone - Uses the Android photo picker: no access to your whole gallery - No account, no ads, no tracking, no analytics SDK - Works offline; delete everything at any time OPTIONAL REMOTE AI Remote AI interprets the photos with a large multimodal model. Before anything leaves your device you see what is sent and to whom, and you decide each time. Included as a small free trial and in the Plus and Pro plans. Pro adds a pre-print check of your slicer preview, photos in the chat, before-and-after comparisons and checks of your OctoPrint or Moonraker camera. All local features stay free. SAFETY FIRST Warnings for hot nozzles, heated beds, moving axes and mains electricity. Print Doctor never explains how to disable thermal protection. SUBSCRIPTIONS Plus and Pro are auto-renewing subscriptions for Remote AI, billed through Google Play. Cancel at any time in Google Play before the end of the current period. Print Doctor is an independent app and is not affiliated with, endorsed by or sponsored by Prusa Research, Bambu Lab, Creality or any other printer manufacturer. Manufacturer names are used for identification only.