- Stock: Out of Stock
- Model: TBG-S-NoMotor
The Trianglelab TBG-S is a geared extruder for 1.75 mm filament, with two drive contact points, large wheels and an adjustable idler. It suits projects where you want to control filament pressure and choose the motor, mount and hotend separately. This version is supplied without a motor.
How the TBG-S feeds filament
Drive wheels grip both sides of the filament. Their large contact area and adjustable idler let you set enough pressure for reliable feeding without unnecessarily deforming the material. A gear train transmits motion, so motor rotation does not directly equal filament travel. The compact body can be used in a Bowden or direct-drive layout when the mount and filament path have been designed for it.
- Filament: 1.75 mm; suitable for experimenting with rigid and flexible materials after setting appropriate tension, temperature, speed and retraction.
- Grip: two contact wheels with adjustable pressure. Our product specification describes the drive and transmission parts as hardened stainless steel and POM.
- Housing: PETG with glass-fibre printed components according to this product's specification; still check the temperature and available space in your printhead.
- Motor: not included. A round motor of approximately 36 mm with a 10-tooth pinion and matching mounting and gear geometry is required.
Check the motor, mount and hotend together
Our round 36 mm motor with a 10-tooth pinion is a possible option, only after checking the pinion profile and axial position, gear centre distance, mounting holes, available clearance and the current your driver can supply. Matching motor diameter and tooth count alone does not establish a correct mesh. The motor, hotend and printer-specific mount are not part of this product.
The TBG-S can be considered for a Bowden or direct-drive conversion, but needs a suitable mount, aligned filament entry and exit, and room for the motor, fitting and maintenance. It is not a universal drop-in replacement for Ender, Prusa, Voron or other printer extruders. If your printhead uses a V6, Dragon or another hotend, check the bracket and filament guide between extruder and heatsink: using the same hotend family does not prove this body will fit. Maximum printing temperature and flow are properties of the chosen hotend, not of the TBG-S alone.
Assembly and first setup
- With the printer powered off, offer up the motor and check that its pinion meshes without binding, side load or excessive backlash. Identify motor coil pairs, connector wiring and appropriate driver current.
- Fit the extruder to a mount designed for the TBG-S. Keep the path from extruder outlet to hotend inlet aligned and free of steps, especially for flexible filament.
- Insert 1.75 mm filament and adjust idler tension gradually. If it slips, check for blockage, temperature and speed before applying more force; reduce tension if the filament is excessively crushed or marked.
- Heat the hotend for the selected material, extrude slowly, confirm direction and measure the actual filament length fed. Recheck after a motor, drive-wheel or microstepping change.
Marlin and Klipper setup
Marlin: set driver type, microsteps and current for your actual motor and board. Measure the filament fed and adjust extruder steps with M92 E...; the correction is new_steps = old_steps × requested_length / actual_length. Use M500 only if EEPROM saving is available in your firmware. Revisit retraction and Linear Advance afterwards if applicable.
Klipper: configure the motor and driver in [extruder], heat the hotend and measure a slow extrusion. Correct rotation_distance using new_value = old_value × actual_length / requested_length. Do not copy a gear ratio or rotation distance from another TBG version: if you use gear_ratio, determine it from the verified gears and do not count the ratio a second time in rotation_distance. Tune pressure_advance after feed calibration.
Is it right for you?
Yes, if you are building or adapting a 1.75 mm printhead with dual filament drive and can select and verify the motor, bracket and filament path. No, if you need a ready-to-bolt-on assembly for a specific printer, an included hotend or calibration values you can copy without measuring your own build.
In the package: this Trianglelab TBG-S extruder, without motor. Choose the motor, hotend and printer mount separately.
