Double ducted for fan 50mm. and hotend J-Head MK-V

by Mejias3D, published

Double ducted for fan 50mm. and hotend J-Head MK-V by Mejias3D Dec 29, 2012
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This is a ducted of double way correct for fan 50mm. and hotend J-Head MK-V for printers Mendel Prusa version 2. The air is driven efficiently to the piece and directly to the heat sink of hotend J-Head MK-V keeping the nozzle hot. You will need bolts and nuts metric of 4mm. Two versions available, with and without mount plate and original 3D file for SketchUp too. You have that to remember this piece only fit over a X carriage, with three linear bearings LMM8U type like this http://www.iearobotics.com/wiki/images/1/1e/DSC05555.JPG

To avoid collision with the four bulldogs paper clips, I recommend using kapton tape around the perimeter of the glass to attach it to the hot bed. The print dimensions are greater now.


Now, there are three new STL files available. You can glue them to get the complete shape named "Double_ducted_for_fan_with_mount_plate.stl"

Use this option to combine three easy printings, where the support material isn't essential and get a functional object, though, for best results, it is still highly recommended to use.

The objects are named: Element_A.stl, Element_B.stl and Element_C.stl


1) Mount the fan with 4 metric 4mm bolts and his nuts.

2) Put the piece over the x-carriage.

3) Put the hot end in the neck of the mount plate.

4) Put the extruder with two bolts metric 4mm. Remember that the nuts must be on the bottom side, you can to screw the bolts from the top side. In this moment is posible that you need block the nut with something like a little wrench because the space is minimal.

5) Finally mount the extruder motor.

6) Be sure that de wires don't touch the timing belt when the printer is in action.

7) Enjoy now pieces 3D with an accurate finishing ;-)

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Hi. Thanks for sharing this design! I tried to print part c, and found it, essentially, impossible to remove the support material. Suggest gap be made larger to allow for support material removal around the ring. Also, it looks like very constricted airflow path and very thick sides. Suggest you make the sides more like a 3 layer shell to give more room for air to flow (and thus less resistance). Take care.

Vaya pasada como queda la pieza impresa, porque es tuya, no?

No queda mal la verdad y funciona de cine. Sí, se trata de un diseño 100% mio :-)