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One of These Isn't Ringing
Ran input shaping and the wavy wall's still there? It might not be ringing. Here's how to tell ringing apart from VFA, Z-banding, and salmon skin — and fix the one you actually have.
Matthew Duffey
Jul 181 min read


Your Printer Isn't Slow — Your Hotend Is Starving
Why high-speed printing looks worse after all your calibrations — and the one number you need to fix it. Learn how volumetric flow rate limits your hotend, how to calculate your ceiling, and which upgrades actually move the needle.
Matthew Duffey
May 20 min read


Heat Creep: the clog that's not a clog
Your extruder starts clicking four hours into a long print, the nozzle pulls clean, and you spend the next week drying filament that wasn't wet to begin with. Heat creep is the most misdiagnosed failure mode on consumer FDM printers — and the fix is a five-step ladder, cheapest first.
Matthew Duffey
Apr 251 min read


Your Filament Is Wet — and You Don't Know It
Stringing, blobs, weak layers, popping sounds from the hotend — you've adjusted retraction, swapped the nozzle, and re-leveled the bed. The real culprit is almost always sitting on your spool. This guide covers how moisture gets into filament, how to diagnose it by material, and how to actually fix it — including where PCTG fits in as one of the most storage-forgiving engineering materials available.
Matthew Duffey
Apr 231 min read


Dialing In Your Lighting: Brightness, Color, and Motion
Getting the pucks on the wall is the easy part. Getting them dialed in — the right brightness for a 2am hallway trip, the right color temperature that doesn't look harsh, the motion sensitivity that triggers when you need it and stays quiet when you don't — that's where most people just guess. This is what actually works. [Read the Full Guide →]
Matthew Duffey
Mar 311 min read


Converting Your Home to a Smart Home
I moved into a new house and immediately had two spots that made me nervous at night — a staircase and a long hallway, both completely dark. I looked into the full smart home build. The Raspberry Pi route, the Philips Hue ecosystem, the professional install. Then I found a simpler answer that solved the actual problem without any of it. [Read the Full Guide →]
Matthew Duffey
Mar 311 min read
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