Prusa Extruder Reworked.

thingiverse

I wanted an extruder that had some of the features of the Prusa extruder but also did not like some of the features of it. This extruder can also be fully printed in PLA with no worry of any parts being to close to body or fan shroud and melting. I liked the Prusa filament drive section but did not like how the hotend clamp and hotend cooling fan attached. On my version both fans face towards the front and the clamp for the hotend comes in from the back. This keeps the front section from tilting any direction when clamping your hotend down. Plus makes removing the hotend as simple as removing two screws without the need to remove any fans. I included a Bltouch mount I modeled it after the original Bltouch dimension. I believe mine is a clone so I had to add 2 thin 3mm washer to get the correct height. Used the Prusa 45 degree cooling fan with 50mm blower but mounted it directly to the bottom of the cooling fan shroud. Uses 2 3mm x 10mm button head allen screws Mounting is by the 3 holes that hold the extruder motor to the body. I have included the mount I use which is for mounting to a MGN12 rail mounted vertical. Use 3 x 3mm x 40mm socket head allen screws. I use a Duet with sensorless homing so do not have a provision included for endstop. 2 x M3x10 button heads (Parts cooler) 3 x M3x40 Socket head for extruder motor/Mounting 2 x M3x20 Hotend Clamp. 4 x M3x20 Hotend cooling fan. 1 x M3x20 50mm Blower support. 5 x Square nuts linked below. 1 x 625zz bearing for Idler Hobbed Gear - https://www.amazon.com/gp/product/B0798V2GML/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 Square nuts - https://www.amazon.com/gp/product/B073SBCMBM/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1