Hark Tech
Help & troubleshooting
Honest, practical fixes for the problems we see most often in the workshop. No paywall, no sign-up — just what actually works.
Creality
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Creality K2 Troubleshooting — First-layer, Extruder and Retraction Fixes
The Creality K2 is a capable printer with a handful of well-known quirks. This hub collects every K2-specific guide we've written, plus the general 3D-printing fundamentals that solve most first-time-user problems.
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KAMP-K2 — adaptive bed mesh and line purging that work on the Creality K2
A fork of upstream KAMP with the K2-specific glue Creality's firmware needs to make adaptive meshing actually work. Free, GPL v3, one-line install.
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What actually needs backing up on a Creality K2 (and why I built a tool for it)
The K2 hides important config files in non-standard places, and most owners back up the wrong things. Here's what actually matters, what's safe to skip, and a free tool that gets it right in one click.
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Why your Creality K2's input shaper recommendation might be wrong
If you've run SHAPER_CALIBRATE on a K2 and felt the result was off, you're not imagining it. Creality's fork of Klipper's shaper analysis has drifted from upstream — five concrete bugs, including a missing ZV anti-bias check that biases close calls toward the wrong shaper.
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Creality K2 extruder clicking or filament jam — quick fix
A clicking noise from the extruder on a Creality K2 or K2 Plus almost always means the drive gear is slipping on the filament. Here's how to find out why and fix it without tearing the whole toolhead apart.
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Creality K2 retraction settings — stop PLA and PETG stringing
The K2's direct-drive extruder needs shorter retractions than older Bowden Creality printers — if you've copied settings across from an Ender, you'll get jams or grinding. Here are the numbers we use, and what to change when strings still appear.
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Creality K2 bed leveling & first layer problems — a practical fix list
Almost every first-layer problem on the K2 traces back to one of four things: a contaminated bed, a wrong Z-offset, a failed auto-level run, or a residual blob on the nozzle before homing. This guide walks through each in the order we check them in the workshop.