Components

Hardware components of the G1 pellet printer, grouped by subsystem.

Specifications

Specifications — every figure in one place: build volume, nozzles, temperatures, speeds, power, drive train

Emergency stop button — red mushroom safety switch, under the display on the panel box
Power outlets (power box) — the three power-box sockets (Forced / Feeding / Bed) and their assignments
Klipper MCU extruder_board — custom Ginger board (heater relays, fans, probe servo; on machines built before early 2026 also the bed SSR signal, which is now on the Octopus); not the extruder breakout
Raspberry Pi and SD card — host computer, flashing G1OS, undervoltage issues
G1OS software stack — what runs on the Pi, where every config file lives, what the pellet fork changes
Panel Box wiring — the 14 harness wires (1 = POWER), extruder breakout, UP/MID/DOWN labels
Power supply 24V — 24V 40A industrial PSU inside the power box, split-phase in US, failure symptoms

Multi-Heating Zones — three independent heated zones (Feeding / Melting / Nozzle)
Main extruder motor — large stepper driving the screw, 3A, 80°C normal temp
Extruder screw — auger inside barrel, cleaning, clog causes, removal procedure
Nozzle set — interchangeable nozzles 1 / 1.8 / 3 / 5 / 8 mm, layer height rules, replacement procedure
Temperature sensor NTC 100k — thermistor on each heating zone, specs, replacement
Heater band — heating element per zone, failure signs, replacement
Max Volumetric Speed — MVS, the limit on how fast the extruder can deliver plastic

Automatic feeding system — the system page: full chain, cycle, operating rules
Hopper — pellet container above the extruder
Vacuum pump — sucks pellets from the bucket to the hopper
Corrugated tube — the three-section feed line; route always rising, no gravity drop
Hopper extender — accessory for manual pellet refill, multicolor top-up

Bed heater — 220V resistive element (~2000W), watermark control through an SSR, bed socket, 110°C firmware limit
Bed surface — glass 6mm, adhesion per material, alternative surfaces
Bed leveling system — auto-leveling probe and method

Frame — aluminum structure, squareness check (±2 mm diagonals), frame bolts
Belts and pulleys — GT2 fibreglass belts, one on X and one per Y motor, tensioning and idler wear
Z lead screws — vertical motion, lubrication, collar adjustment
Linear rails — XY guidance plus the Z axis, lubrication, alignment

Dryer — pellet hopper dryer, models, temperatures, connection to hopper
Camera — USB webcam, add via Mainsail dashboard, Obico for remote monitoring
Display screen — KlipperScreen touchscreen, Z offset, error codes, safety blocks