If you’ve ever looked at the top surface of an FDM print and wished it was smoother, ironing is the answer. This Cura feature runs the hot nozzle back over the top layer with minimal extrusion, effectively melting and flattening the surface. The result is a noticeably smoother, more professional finish — and it adds…
Your 3D printer’s thermistor is a tiny sensor that plays a massive role — it tells the firmware exactly how hot the hotend and heated bed are. When it fails or malfunctions, you get erratic temperatures, thermal runaway errors, failed prints, and potentially even a fire hazard. In this guide, I’ll cover every common thermistor…
Lithophanes are one of the most magical things you can create with a 3D printer. These thin panels turn any photograph into a three-dimensional relief that reveals stunning detail when lit from behind. The trick is that thicker areas block more light (appearing darker) while thinner areas let light through (appearing brighter). The result is…
Snap fit joints are one of the most useful mechanical features you can 3D print. They let you create enclosures, battery covers, modular assemblies, and functional prototypes that click together without screws, glue, or hardware. But designing snap fits for FDM printing requires understanding material behavior, print orientation, and tolerance — get any of these…
If your 3D printer is experiencing inconsistent extrusion, unexpected clogs, or PTFE particles in your prints, it might be time to replace the bowden tube. This critical component guides filament from the extruder motor to the hotend, and over time it degrades — especially if you print at higher temperatures. In this guide, I’ll walk…
What Causes PETG to Cloud, Fog, or Lose Clarity? PETG is one of the few FDM filaments that can produce genuinely transparent or translucent prints — vases, light diffusers, window panels, and display cases that let light pass through beautifully. But achieving that clarity isn’t as simple as loading a clear PETG spool and hitting…
What Are Pressure Advance and Linear Advance? If you’ve ever noticed bulging corners, inconsistent line widths during speed changes, or blobby starts and stops on your prints, the culprit is often filament pressure dynamics inside your hotend. Pressure Advance (Klipper) and Linear Advance (Marlin) are firmware features designed to compensate for this by predicting and…
Can You Really Get a Good 3D Printer for Under $200? A few years ago, spending under $200 on a 3D printer meant settling for a barely functional kit that required hours of assembly and endless tinkering. That era is over. The budget printer market in 2025 has reached a point where sub-$200 machines deliver…
What Is PVA Support Material? PVA (Polyvinyl Alcohol) is a water-soluble filament designed specifically for use as support material in dual-extrusion 3D printers. Instead of wrestling with pliers, knives, and sandpaper to remove traditional supports, you simply drop your finished print into warm water and let chemistry do the work. The PVA dissolves completely, leaving…
What Is Polycarbonate Filament? Polycarbonate (PC) is one of the strongest thermoplastics available for desktop FDM 3D printing. Known for its exceptional impact resistance, high heat deflection temperature, and natural transparency, polycarbonate is the go-to material for engineers and makers who need parts that can take real-world punishment. Unlike PLA or even PETG, polycarbonate demands…