This is the latest generation Bondtech upgrade for the popular Prusa I3 MK3S, with an optimized design achieved with the help of the community.Bondtech Extruder For Prusa i3 MK3S
This kit contains the necessary parts to convert your current extruder to our own popular design based upon our BMG (Bondtech Mini Geared) extruder with 3:1 gearing ratio for better precision and resolution together with optimized geometry for the heatsink cooling and professional SLS 3D printed housing.Lightweight BMG (Bondtech Mini Geared)
With this version we also lower the moving weight to reduce ghosting and vibrations or to allow increasing the printing speed. 15% of weight saving was achieved.Product Main Features
This extruder upgrade kit is for the Prusa i3 MK3S, or other Prusa i3 models upgraded to MK3S.
These are its main features:
- Adapted to fit Prusa’s new filament sensor;
- Includes one Bondtech’s BMG extruder with 3:1 gearing ratio;
- Optimized geometry for heat-sink cooling;
- Less moving weight to reduce vibration and ghosting;
- Professional SLS 3D printed housing.
The enhanced housing design improves cooling and decreases heat creeping issues that all metal hotends have when printing with PLA. This small enhancement will avoid many clogs.
The increased push force will drastically reduce slipping, shredding and deformation of the filament avoiding most of the common filament 3D printing issues that start with under and over extrusion.
To use this upgrade in the MK3S, the E-steps needs to be updated to 830, as it uses 32-bit microstepping. Use this file instead.Community involvement
This is a co-development work with awesome guys in the Prusa Community like Chris Warkocki, Grégorie Saunier (Bear Upgrades), Olof Ogland, Erik Bjorgan, Josh Jones, Kyle Wiehe, Marc Evertz, Matt Harrison, Ocie Ward, Sando Bendig, Vecko Kojchevski (Vecko Extruder), Steven Mölby, and Yuri Delia that have provided excellent feedback and suggestions of how to develop the ”perfect” extruder setup for the Prusa series printer. A lot of work has been put in this project and we tried to listen to all the inputs in order to find a solution that can be the best fit to the Prusa I3 MK3S.The STL Files For Additional Parts Required Available As Free Download
The 3D printed parts of this kit can be downloaded from our server.
- Click here to download the Front
- Click here to download the Rear
– Click Here to Access The Installation Guide –
Article number: EXT-KIT-68
EAN code: 7350011410651
Net weight: 291,5g
Gross weight: 380,2g
Package Size: 137x94x65mm
Gearing ratio: 3:1E-steps value : 830
Extruder Housing: SLS Printed parts in Polyamide 12
Lightweight 25 mm pancake stepper with 18 N/m torque.
Max Input Current: 0.8A
Max chamber working temperature: 80℃
Weight Reduction: 343,2g of parts coming out and 291,5g of parts coming in. A 51g (15%) weight save.
X-Carriage: Requires buying or 3D printing new X-Carriage R2 Front and Rear.
Firmware: Bondtech adapted version required.
Licensing: This Project is licenced under GPL V3.0 and the STEP-files are available for download.
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