Satsana Dual 5015 Fan Duct for Ender 3 / CR-10

This is a new totally redesigned version of my popular Satsana fan duct for the Ender 3 and other compatible printers.

See my previous designs here:

- Satsana Ender 3 Fan Duct - Satsana 5015 Fan Duct for Ender 3 / Ender 5 / CR-10 Dual 5015 Part Cooling Blowers

Hopefully this is obvious from the photos and images, but the primary update to this design is the addition of a second 5015 part cooling blower.

This is really more cooling then you should ever need. Actually in some cases this might cause two much airflow and result in problems creating bridges because the air starts blowing the filament down. In this case you can just reduce the fan speed in your slicer.

My second goal behind adding a second blower fan was better...

Hotend Nozzle Visibility

One aspect of my previous designs that I never liked was how the horizontal duct across the front created a large "chin" which made viewing the filament nozzle difficult. With this design my goal was to not block the view of the nozzle any more then is already blocked by the heater block.

No Slotted Mounting Holes

My last single 5015 duct had slotted holes to allow the position of the duct to be adjusted to account for different hotend and nozzle sizes.

While in concept I liked this adjustability, in practice I found it fiddley and annoying to have to reposition the duct any time it was removed.

So as an alternative this design incorporates...

Detachable Part Cooling Nozzles

The part cooling fan nozzles are printed and attached to the main duct body separately. There are a few benefits to this.

First this allows different nozzles sizes to be printed and replaced without having to reprint and reinstall the entire duct. I've included STLs of a range of nozzle heights here.

Second, performing maintenance on the hot end and heater block is much easier when the part cooling nozzles can be temporarily removed at set aside to make more space around the heater block.

Third, this also make it possible for others to remix and experiment with different nozzle designs with out having to reprint and reinstall the entire duct. I've included a blank "nozzle connection" STEP file to help facilitate this.

ABL Support

Probably the most requested feature and reason for people remixing my previous designs was to add support for an ABL sensor. So this round I figured I'd get ahead of that and add a version with an ABL mounting point from the git-go. This works with my CR touch and I think it should also work with a BL Touch.

Probe Offset

Here's what I've set my probe offset to in Marlin for my CR touch. A BL Touch or different nozzle may require different offsets from this.

#define NOZZLE_TO_PROBE_OFFSET { -49.3, -8, -0.77 }

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

No

Resolution:

0.20

Infill:

Cubic 20%

Filament: Overture PETG

White

Notes:

Makes sure to orient the duct body so the back mounting surface is down towards the bed and it should not require any supports as long as your printer can handle a 45 deg overhang and a maximum 20 mm bridge.

The back edge of the nozzles have a chamfer that mates with a corresponding chamfer on the duct body. I find it's best to print the nozzles on their front face with this chamfer facing up.