# 3DPHUB

> Free database for 3D printing: replacement parts, upgrades, tutorials, calibration calculators, and troubleshooting guides.

3DPHUB is a community-driven knowledge base for 3D printer owners. It catalogs printer-specific replacement parts and upgrades, step-by-step tutorials and repair guides, and a suite of calibration calculators for tuning slicer settings.

## Pages

- [Home](/): Overview of FIND, LEARN, and TUNE sections.
- [Find](/find): Searchable database of replacement parts, upgrades, filament deals, and tools, filterable by printer.
- [Learn](/learn): Repair guides, upgrade tutorials, slicer walkthroughs, and 3D printing tips.
- [Tune](/tune): Calibration calculators for flow rate, pressure advance, retraction, maximum volumetric flow, and more.
- [Tools](/tools): Paid utilities including EZROOT and JANITRON for Creality K1-series printers.

## Calculators

- [Flow Rate Calculator](/calculators/flow-rate): Calibrate extrusion multiplier from a test print.
- [Pressure Advance Calculator](/calculators/pressure-advance): Find the optimal pressure advance value for Klipper/Marlin.
- [Max Volumetric Flow Calculator](/calculators/max-volumetric-flow): Determine maximum filament throughput for your hotend.
- [Retraction Calculator](/calculators/retraction): Tune retraction distance and speed.
- [Skew Correction](/calculators/skew-correction): Generate Klipper skew correction G-code.
- [Rotation Distance Calculator](/calculators/rotation-distance): Compute CoreXY/belt-drive rotation_distance.
- [BTT Belter Calculator](/calculators/btt-belter): Convert BTT Belter deflection readings to belt tension in Newtons.

## Optional

- [Contribute](/contribute): How to submit parts, tutorials, and corrections.
- [Privacy Policy](/privacy-policy): Site privacy practices.