Dual Aux Fan for H2D (Secondary cooling system) - Free 3D Print Model

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nyx_nk

3D Printer>3D Printer Parts

IP Report

Print Profile(4)

All

H2D

H2D Pro

P1S

P1P

X1 Carbon

X1E

H2S

P2S

H2C

X2D

A2L

Original design: supportless - 2 plates

Designer

7.3 h

2 plates

5.0(3)

Alternative: single piece tilted with support

Designer

8.6 h

1 plate

5.0(1)

Lower part only (for P1/X1/A1)

Designer

2.6 h

1 plate

Correct aux position - Stabilized single piece print no glue

8.8 h

1 plate

Open in Bambu Studio

Boost

196

Released

Description

Due to the large size of the Bambu Lab H2D plate, a single fan on the side does not work efficiently over the entire surface. For this reason I introduced a second fan blowing from the opposite side in order to properly cool the right side of the plate as well. An improvement in print quality is evident.

WHAT YOU NEED:

Auxiliary Part Cooling Fan for H2D
Printed parts (2 plates) - AVOID PLA OR PETG
x4 screws removed from printer during umboxing
x2 M3x6 screws included in printer accessories
Basic electrical skills
Double-sided adhesive (optional)

INSTRUCTIONS BELOW:

Note: To improve stability, it's suggested to use a piece of double-sided tape to fix the printed frame to the printer glass

ELECTRICAL CONNECTIONS:

PROFESSIONAL WAY
Buy some JST GH connectors and create the following Y-connector:
BRUTAL WAY:
Cut the fan cable and connect the individual wires in parallel to the original fan cable respecting the colours.

CABLE MANAGEMENT:

Pass the cable in the back panel as show below:
Open printer's back panel and pull the cable. Organize the cable using the original locks until the printer's motherboard
Connect as previously shown. Aux fan connector on the motherboard is the following:

THE DESIGNER OF THIS PROJECT DOES NOT TAKE ANY RESPONSIBILITY IN CASE OF ELECTRICAL DAMAGES

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Please, support my work if you like it!

Comment & Rating (32)

@kevincollins

Boosted

Thanks! Working well for me. I printed mine in PAHT-CF. Glued the two parts with epoxy. I wired my own splitter so I didn't have to modify any original parts. I got my JST connectors from Amazon (20Pairs Micro JST GH 4Pin 1.25mm Male Female Connector, GH1.25 Terminal Connector Wire Cable 15cm 28AWG / https://www.amazon.com/dp/B0C2ZNY92M?ref=ppx_yo2ov_dt_b_fed_asin_title&;th=1). Be warned, soldering wires to the female connectors is tedious and challenging, so get pre-wired ones if you can. I used 26AWG 4-conductor cable for the long run from the second fan to the back of the printer (https://www.amazon.com/dp/B08XBJTGLJ?ref=ppx_yo2ov_dt_b_fed_asin_title). It was easy to shove into the existing cable organizers. My secondary fan receives only a PWM signal from the main board. It gets its power directly from the main power supply (+V and -V). The TACH wire for the second fan is unused, as it is unnecessary.

The designer has replied

@nyx_nk

Nice work! Exactly what I've done. Thanks for sharing

@Levaxx

which is the tach wire?

@kevincollins

Boosted

Replying to @Levaxx :

Light grey. This page has good wire diagrams: https://makerworld.com/en/models/23658-bambu-lab-p1-x1-dual-aux-fan-bentobox-7-28-updated#profileId-45932

@Olli

Hi, nice design. Why to glue the parts and not just print at once?

The designer has replied

@nyx_nk

The original idea was to make just one single part, but it's too big for the builtplate unfortunatly

@Olli

Replying to @nyx_nk :

Hi, don't know your name. Thanks for the hint, did not have that issue on my mind. Are you able to give me the file when both parts are at once, I want to try to print with support, then it would fit. I hate glued products :-D Thanks Oli

@nyx_nk

Replying to @Olli :

It doesn't make much sense to me. With just a few drops of glue (or adhesive tape) you have a supportless print. Tilting it to fit everything into a single plate consumes a lot more material for the supports. But if you prefer it that way, I upload a profile with one piece. You can download it

@vandelayind

Boosted

Printed with Bambu ASA-CF and it came looking like it was straight from the factory! The model was made very well, with fillets added in just the right places to reduce and eliminate benchy hull lines. I'm waiting on the JST connectors before putting everything together and installing it though.

@user_3905127299

For electrical connection, it's probably wiser to make a splitter instead of just splicing them together. Two way splitter where new fan connection gets power directly from the 24v psu and only the pwm signal from the board. The new fans tach does NOT need to be connected, which can lead to odd fan speed changes. You can look here https://makerworld.com/en/models/23658-bambu-lab-p1-x1-dual-aux-fan-bentobox-7-28-updated#profileId-45932 for how the splitter can be made (again, do not connect the tech wire that the diagram shows for the new fan). Connector appears to be a jst gh 1.25mm

(Edited)

@user_1288171400

Great idea and design. Any chance you might shed more light on the way to connect it electrically? I've checked Bambu "replace aux fan" manual and it is like taking half of the printer apart. Thanks.

The designer has replied

@nyx_nk

Just remove the back panel and move the cable there

@comridor

Boosted

This is exactly what I was looking for! I just printed some light diffusers out of transparent PETG in spiral vase mode, and since I'm impatient, I tried to print with "slow down printing for better part cooling". Mistake! The entire right side of the object came out looking like it had been in a fire. It was immediately obvious that the aux fan only properly cools items from the left side, and the right side of your print is going to overheat. "Second fan" I thought: Sure enough, someone (you) with more skill and time than me has already figured out the problem and created a PERFECT solution! Thank you again.

@user_4202640037

is this mod also compatible with the H2S

Show original

@WebPrints3D

This looks like a good upgrade.

@user_3538286026

Love the wiring set up, thx! Has anyone tried using this same wiring setup for a auxiliary / second exhaust fan? Looking at installing a second HEPA 14 w/charcoal filter but that level of restriction requires an extra fan...I was planning on adding manually controlled extra fan, but I'd love the idea of just having a second stock fan that is mirroring the factory installed fan.

@chicago_knight

name of the fork wires?? cant find any

License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.

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