"Der Skorpion" - Fan Duct for Geeetech A10M and A20M dual colour printers

Update 29.12.2018:
Version 1.1 of Skorpion where the duct mount was thickened and the duct outlet was shortened to be a little more far away from the heater block

Because the cooling on my A10M and A20M was not quite convincing, I designed this part with following concepts in my mind:

1. More silent 40x10 or 40x20 Fan instead of the two 30mm fans for the hotend
2. Better cooling with a radial 5015 Fan
3. To see better whats printing
4. Customisable

5. Good looking
   The BLTouch has following X and Y offsets:
   X= -38 mm
   Y= +10 mm

   Please consider leaving a TIP if you like it. Thanks in advance.

   What you'll need:

   Extra parts:
   1x Axial 40x10 or 40x20 for the hotend
   1x Radial 5015 for the Fan Duct / Part cooling fan
   (the A10M and A20M is 24V machine so make sure the fans are 24V)

   Printed Parts:
   1x Part A+B(left+right mount) + Part C(duct) + Part D(FrontBit) + Part E(BLTouch optional)
   1x recommended Hotend PCB Mount: https://www.thingiverse.com/thing:3195894

   Mounting bits:
   4xM3x12 for carriage
   2 M3 screws for carriage
   4xM3x16 for hotend (BLTouch + Fan Duct)
   4xM3x16 for Hotend Fan (for 40x10 fan), and 4xM3x25(for 40x20 fan)

   All the modifications you make to your printer is your own decision, I cannot be held responsible for damages what may result by this mod.

   Special thanks for beta testing: Eric Beirnes, Irene Wolters, Jarno de Jong, Johann Podina, Kevin Goethals, Sammie Spencer

   and David Petsel and Sven Beckum for some of the design ideas.

Print instructions

Category: 3D Printer Parts Print Settings

Printer Brand: Prusa

Printer: Prusa Clone

Rafts: No

Supports: Yes

Resolution: 0.20 mm

Infill: 25%

Filament: fillamentum PLA for mount PETG for Duct
Notes:

Supports needed only for Part A + B + E (Slic3r PE settings in the pictures)

Fan duct(C) and front bit (D) doesn't need supports.

Post-Printing

Bought these insulating pad to insulate my hotend for maintaining the temperature. Using this you can even print the fan duct in PLA.

Punched a hole in one of them for the nozzle.

Wrap it around the bottom, and cut another piece in two to use them on the sides.

And mount the final piece and tape the whole thing with kapton heat resistant tape.