• MeltCalc

  Compares 3D printer hotends by melt zone geometry: sustainable volumetric flow rate, residence time, melt energy, heater power and cost per mm³/s. Covers 90+ hotends and 36 filament materials from PLA to PEEK.

  meltcalc.baconmilkshake.com

• INDX-CAD

  Reverse engineered CAD of the Prusa INDX toolhead, including internal geometry and moving assemblies. Live 3D viewer plus STEP and Fusion 360 (.f3z) downloads under CC BY-SA 4.0.

  indx-cad.baconmilkshake.com

• Toolchanger Data

  A reference for 3D printer toolchanger topologies — conventional toolchangers, filament path changers and hotend changers — with diagrams, tradeoffs, and examples from commercial and open source machines.

  toolchangers.baconmilkshake.com