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Bowden upgrade from prusa p3

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Creation quality: 5.0/5 (1 vote)
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  • Bowden-bracket-ksevin.stl
  • Bowden_carriage-ksevin.stl

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Publication date 2023-02-20 at 12:25
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Published to Thingiverse on: 2018-01-23 at 14:13
Design number 1075662

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3D model description

Prusa p3 uses direct extruder so the x-carriage is very heavy as it holds the x-axis motor. Bowden extruder seperates the motor from the hotend thus the x-carriage is lighter, minimizing the swinging during fast returns. This allows better printing. The j-head mount fits to the existing x-carriage screw holes.
I got the extruder parts from aliexpress as low as $ 7. You will also need a J-head hotend (preferably with a cooler fan) and a teflon (PTFE) tube. When you have installed the bowden and the hotend mount, before attaching the tube to the hotend, extrude the filament 5 cm and measure the actual lenght getting out of the tube ("E" in milimeters). Checkout the steps needed for 1 mm extrusion in your firmware which is about 700.
700x50=35000 steps. Then divide 35000 to "E". For example if you measure "E"=120 then 35000/120=291.667 Just change 700 to 291.667 in your firmware.

Also see my spool-holder holding the bowden extruder motor.
https://www.thingiverse.com/thing:2766928
And also my Nozzle Duct:
https://www.thingiverse.com/thing:2771787

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