Geared Extruder 2

myminifactory

Geared Extruder 3mm Filament This extruder works extremely well and has been in operation for many hours now. I recently placed it inside a closed housing designed specifically for ABS printing, where temperatures can reach up to 45°C. However, after some time, the main body started to warp slowly. Conclusion: This extruder functions perfectly outside an enclosure but does not perform as well when used within a high-temperature environment. Instead, consider using the following alternative: https://www.myminifactory.com/object/3d-print-62162 This is a geared extruder designed for use with 3mm filament, although it can also be utilized with 2.85 and 1.75 mm filaments as well. I created this extruder to fit the K8200 from Velleman because my previous extruder had reached its limit. The gear ratio remains the same as the old model, so there is no need to modify the firmware. The filament guide portion can be drilled to match the size of your chosen filament. The driver component of this Extruder features an M8 bolt that has been turned down to 5 mm on one end to fit the filament driver gear. Please refer to the images for dimensions. If you have a Hot End with a higher position, you may need to use "hot end bracket part1 2.5mm higher.stl" instead of "hot end bracket part1.stl". I initially intended to utilize a cheaper Chinese-made Hot End but ultimately opted for an European-made one, which resulted in the Bowden connection being slightly taller. The small gear has 10 teeth, while the large gear boasts 43 teeth. For further details on additional parts required, please consult the provided images. April 8, 2018 Spring Update I initially used this extruder with great success without incorporating a spring. However, I encountered issues with a specific type of filament that had varying diameters along its length. This resulted in extruder failures as the filament would slip on the driver gear when it reached sections with thinner diameters. To address this issue, I decided to incorporate a spring into the design. Although I should have done so from the beginning, I initially aimed for simplicity. Nevertheless, the addition of a spring has proven to be more reliable and lessens the need for precise pressure adjustments. Please refer to the additional image provided for further details on the modifications made. Key updates include: * A longer pressure bar holder to accommodate the spring * A new knob and M5 bolt, along with an 8mm x 20mm spring (note: the original bolt was an M6, but it occupied too much space) * The pressure bar has been modified to accommodate the spring Parts List: 1. 1x M3 x 6mm bolt 2. 5x M3 x 10mm bolts 3. 6x M3 x 20mm bolts 4. 3x M3 x 40mm bolts 5. 12x M3 nuts 6. 7x M3 washers 7. 1x M4 x 40mm bolt 8. 1x M4 nut 9. 2x M4 washers 10. 1x M6 x 20mm bolt (M5 for the spring update) 11. 1x M6 nut (M5 for the spring update, also serves as a locknut and spring) 12. 2x M8 washers 13. 1x M8 bolt for the driver gear; please consult the image for dimensions 14. 1x Filament driver gear 15. 3x Bearing 608Z 16. 1x Nema 17 stepper motor