Troubleshooting hub
Start with what you can see. Add another detail only when it helps narrow the cause.
Browse the latest guides, or choose a symptom, print stage or material above.
Resin printer makers publish exposure data; most FDM makers do not. Here is what NIOSH's chamber tests, the UL 2904 standard, and the nylon-specific caprolactam research actually measured, and which mitigations the data backs up.
Creality's K3 swaps entire nozzle-and-hotend assemblies instead of purging filament through a shared nozzle. Unveiled at IFA 2026 with a 4.8-second swap time, but still no price or ship date.
Silk PLA strings more than the plain PLA you're used to, and moisture or retraction alone do not explain why. Here is what Bambu Lab and Polymaker actually document about printing silk filaments, and why fixing the strings can mean giving up some of the shine.
PrusaSlicer 3.0's first public preview shipped on September 1, exactly 15 years after Slic3r's first commit. The interface was rewritten from scratch, projects can now mix multiple printers sliced in parallel, and a new plugin system runs sandboxed by default.
PETG resists the layer separation that plagues ABS, but print speed outrunning nozzle temperature, a flow ratio pushed too low, or cooling copied from a PLA profile can still crack it. Here is what Prusa and Bambu Lab actually document about why, and the fix for each cause.
A researcher found that Lychee Slicer's account email change can be faked with nothing more than a screenshot, exposing any customer account. Mango3D has not confirmed a fix a month after being told.
TPU strings because it compresses under retraction instead of pulling back cleanly, so adding more retraction the way you would for PLA often jams it instead. Here is what Prusa, Bambu and Polymaker actually recommend.
PETG strings because its melt stays soft and stretchy across a far wider window than PLA's, so the strand draws out instead of snapping. Here is why zero stringing is the wrong target, and which of the retraction, Z-hop, travel and cooling settings actually change anything on PETG.
E3D confirmed it's developing an abrasive-resistant nozzle for Bondtech's INDX toolchanger, after Bondtech admitted the nozzles it shipped weren't hardened as advertised. Here's what changed, what didn't, and what it means if you already own an INDX.
AMS, CFS, ACE Pro, CANVAS and MMU3 all jam for a short, predictable list of reasons: a damaged spool, debris in the feed path, a kinked tube, or a sensor that can't see filament that's actually there. Here is how to find which one is actually happening on your printer.
Prusa now sells its INDX toolchanger pre-installed in a complete, factory-assembled printer, and the larger CORE One L+ just got the same option. Here's the pricing, ship dates, and a nozzle wear caveat Prusa published alongside it.
A nozzle that scrapes or gouges the top of a print during a travel move is a clearance problem, not stringing or vibration. Here is how Z-hop, a stray blob, or a tight Z-offset each cause it, and how to tell it apart from fuzzy skin or Z-banding.