Direct drive mini extruder for Mini i3

thingiverse

The compact extruder designed by Kliment/Josef is a great addition, but I found it challenging to work with due to its large size on my Mini i3 printer. As a result, I made some adjustments that turned out pretty well. To address this issue, I created a smaller direct-drive extruder specifically for j-head hotends. However, it may not be the best choice if you plan to use it with speeds above 40mm/s and 3mm filament; it can manage up to 100m/s with 1.75mm filament. Despite the slower printing speed, I now get 120x120mm prints from my Mini i3. Although uncertain if the 625 bearing for the motor shaft is necessary, it hasn't caused any harm. The lever and spring support, available in orange in the pictures, can be found at http://www.thingiverse.com/thing:43411. For this project, you will need 2 M3x20mm, 2 M3x18mm, 2 M3x30mm, a 10mm diameter spring (30mm long), a 625zz bearing (optional), an 8mm drive gear, and a 608ZZ bearing. You can stop the print once the part reaches about 35 or 40 mm tall in terms of motor support printing.