Quick diagnosis
Fix under-extrusion after changing filament by purging fully, checking diameter, temperature, clogs, and extruder grip.
Likely causes
- Old filament still in hotend
- Wrong temperature for new material
- Partial clog
- Extruder gear slipping
Step-by-step fix
- Purge more than you think you need.
- Raise temperature temporarily for the old material.
- Check extruder gear for dust.
- Inspect nozzle for partial clog.
What to check before changing more settings
Only change one variable at a time. Save your current slicer profile before testing, use a small repeatable test print, and compare the result before moving to the next adjustment.
Helpful gear to check
These are contextual tool links, not required purchases. Use them only if they match your printer and the problem you are solving.
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Nozzle Cleaning Needles
Check compatibilityUseful for this fix path. Confirm size, printer compatibility, seller, price, and return details before buying.
View on AmazonAmazon searchBrass Nozzle Kit
Check compatibilityUseful for this fix path. Confirm size, printer compatibility, seller, price, and return details before buying.
View on AmazonAmazon searchHardened Steel Nozzle
Check compatibilityUseful for this fix path. Confirm size, printer compatibility, seller, price, and return details before buying.
View on AmazonAmazon searchFlush Cutters
Check compatibilityUseful for this fix path. Confirm size, printer compatibility, seller, price, and return details before buying.
View on AmazonContinue from this guide
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