GCodex
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In-depth guides, tutorials, and expert insights on G-Code, CNC machining, 3D printing, toolpath optimization, Marlin firmware, and bioprinting — all in one place.
Understand G-Code from the ground up — what it is, how machines read it, the anatomy of a command, and why every CNC and 3D printer operator needs to know the basics.
From raw material to finished part — explore the full CNC workflow, machine types, axes of motion, coordinate systems, and how G-Code turns digital designs into real objects.
An honest, side-by-side comparison of additive and subtractive manufacturing — covering cost, material compatibility, precision, speed, and the best use cases for each method.
A practical reference covering the most important G and M codes — G0, G1, G2, G3, G28, G92, M104, M109, M140, and dozens more, with real-world examples and explanations.
Discover professional strategies to reduce cycle time, improve surface finish, and extend cutter life — from feed rate tuning and depth-of-cut decisions to entry moves and chip load calculations.
A systematic guide to diagnosing and fixing the most frustrating G-Code problems — from coordinate system mistakes and homing failures to thermal runaway, extrusion jams, and offset errors.
Learn why experienced machinists and 3D print engineers always simulate before running — and how browser-based tools like GCodex let you catch collisions, over-travels, and layer defects before they happen.
Everything you need to configure Marlin for your 3D printer or syringe pump — steps-per-mm calibration, PID tuning, EEPROM, bed leveling, microstepping, and the G-Code commands to control it all.
Explore how G-Code powers the next frontier of medicine — scaffold fabrication, hydrogel extrusion, flow-rate synchronization, and the unique challenges of printing living cells and biomaterials.