Guides
Long-form guides that explain the geometry and physics behind print settings, not just rules of thumb. Each guide cites its primary sources, shows worked arithmetic, and marks the places where we still owe you our own bench measurements.
Calibration
Calibrating Extruder E-Steps and Klipper Rotation Distance
Learn how to calibrate Marlin E-steps and Klipper rotation_distance using the 100 mm extrusion test, gear ratios, and hardware-level stepper math.
First-Layer Squish, Line Width, and Z-Offset Calibration
Master first-layer Z-offset calibration, thermal expansion math for beds and hotends, wider first-layer line widths, and surface ridge diagnostics.
Maximum Volumetric Speed Explained: Hotend Flow Rate Math
Calculate maximum volumetric speed (mm³/s) from layer height, line width, and print speed, and learn how hotend melt zones limit 3D printing flow.
Slicer Flow Rate and Extrusion Multiplier Calibration Math
Understand slicer flow math using the stadium cross-section formula, why single-wall caliper tests mislead, and how to tune extrusion multiplier.
Design & Tolerances
Designing 3D-Printed Parts That Fit: Clearances and Tolerances
Calculate radial and diametral clearances for press, sliding, running, and print-in-place FDM joints using hole-basis design and extrusion math.
Why Vertical and Horizontal 3D-Printed Holes Print Undersized
Explore the geometry and polymer physics behind undersized FDM bores, including STL chord error, corner pulling, bridge sag, and XY compensation.
Hardware & Motion
Nozzle Diameter vs. Layer Height, Line Width, and Overhangs
Understand how nozzle orifice diameter and flat tip width govern layer height limits, maximum extrusion width, die swell control, and overhangs.
Stepper Angles, GT2 Belts, Lead Screws, and Z Layer Heights
Calculate rotation distance, steps per millimeter, and full-step Z layer increments for 1.8° and 0.9° steppers, GT2 belts, and TR8 lead screws.
Materials
Filament Moisture, Hydrolysis, and Drying Temperatures
Why hygroscopic PLA, PETG, TPU, and nylon filaments string, pop, and lose layer strength when wet, with target drying temperatures, times, and storage rules.
PLA vs PETG vs ASA: Mechanical and Thermal Trade-Offs
Compare PLA, PETG, and ASA for functional 3D prints across glass transition temperature, tensile stiffness, creep, UV resistance, shrinkage, and enclosures.
Troubleshooting
Retraction, Stringing, and Pressure Advance Explained
Eliminate stringing, oozing, and corner blobs by tuning Bowden vs direct-drive retraction, nozzle heat, and Klipper Pressure Advance or Marlin Linear Advance.
Cost & Energy
3D Printing Cost Math: Filament, Electricity, and Wear
Calculate what a 3D print actually costs from filament length and polymer density, preheat and steady-state kWh electricity use, nozzle wear, and fail rates.