Bondtech BMG Extruder Standard
Fits for: bowden and direct driven applications
Variant: standard (right handed)
Filament diameter: 1.75mm
Filament path: fully guided
Feeds all material with high reliability
With thumbscrew tensioner for fine-tune the pressure exerted onto the filament
With Quick-Release lever
Weight without motor: 75g
E-step value: 415 steps/mm
Bondtech Dual-Drive
The Bondtech BMG extruder combines high performance and resolution with low weight. Together with our proven and highly celebrated Dual-Drive technology you can expect problem free material feeding. The unique Dual-Drive technology delivers uninterrupted material flow without fear of grinding or slipping in even the most demanding conditions. Bondtech users the world over will attest that even in prints with thousands of retracts our extruders perform flawless, with unmatched precision, and zero damage or degradation to the filament.
Build Quality
The housing parts are professionally SLS printed in nylon for maximum strength and precision.
Bondtech Mini Geared Features
The Bondtech BMG utilizes an internal gearing ratio of 3:1 together with precision cnc-machined nickel coated hardened steel drive gears to give you a compact powerhouse for all your applications. Whether you require high resolution prints with small nozzles or high-flow prints with big nozzles the optimized gearing ratio combined with our industry leading drive gears provides unparalleled pushing power and lightning fast retractions in a lightweight and compact package.
Multi-material capability
The BMG extruder feeds all material with high reliability, from slippery nylons and soft TPU/TPE filaments to highly rigid and sometimes brittle carbon-filled high-strength materials. The extruder is designed for 1.75 mm filaments, but has been tested to ensure performance of filament from 1.5mm up to 2.0mm allowing for high reliability regardless of the tolerance of the filament used. The filament path is fully guided throughout the extruder body and the housing maintains tight tolerances to the drive gears mitigating the chances of filament misfeed when the hotend experiences increased back-pressure or highly flexible filaments are used.
Adjustable tension
The thumbscrew tensioner allows the user to fine-tune the pressure exerted by the drive gears onto the filament. This gives you the power to adjust according to your preferences and to optimize for the type of material you are using.
Quick-Release
To be able to do material changes in a snap, simply activate the Quick-Release lever to release the tension and pull the material to be changed out of the extruder, keep it activated and insert the new material.
Multi-application design
This extruder can be used in a bowden or direct setups and gives you the flexibility to choose what works best for your application. In addition it features an integrated hotend retention method compatible with the E3D-V6 hotends or others using the Groove Mount standard. Mounting your hotend is simple, secure, and wobble free by means of just two bolts.
Flexible mounting options
Standard mounting bracket: a standard CNC-machined 3mm aluminum mount or a 3D printable mount that you can download a stl-file for free.
NOTICE: Delivered without a mount. You have to either buy a complete mount or download the stl-file and print one yourself. Add required fasteners and thread bushings that are available here.
The extruder fits any Nema17 stepper motor with a standard 5mm shaft. For suitable stepper motors, please select one of the below or use your own motor.
NOTE: This extruder is sold without motor.
New Design Features
- The Motor Gear is now made of Brass. The corrosion resistant material will stop the very low frequency of oxidation issues that happened to the steel gears.
- The POM Gear attached to the Main Shaft is now black. This is a pure aesthetical upgrade to mask out the dirt that shows too much on white.
- The Push-Fit is now threaded. It can be removed and/or replaced to make it easier to solve clogs without ruining the BMG’s housing.
- Important Notice -
About the E-Steps
The e-steps depend on:
- the stepper motor angle per step. The most common is 1.8°. Some printers use other kinds
>> And an inverse proportional relationship with angle per step: If the stepper motor angle per step is half, eg. 0.9, double the e-steps value.
- the mainboard micro-stepping setting. The most common is 16 bit. Some boards may use other bit settings.
>> There is a directly proportional relationship with micro-stepping bits: If the micro-stepping is double, eg. 32 bit, double also the e-steps value.
The value for the e-steps we present is the most common scenario: 1.8°/step motors and 16 bit micro-stepping.
Documentation
- Datasheet BMG Extruder
- Setup Guide - How To Attach a V6 Hotend
