3D model description
The original rear fan on the QIDI X-MAX 3 is excessively noisy, especially when the machine is at rest.
Modelling of the machine's rear panel to accommodate a Ø 120 mm 12 V fan, with space for a 24-12 V voltage converter.
Significant reduction in machine noise at rest, from 56 dB to around 39 dB measured at 30 cm from the fan source. In other words, at 1 metre from the machine, it becomes completely inaudible.
Note: 120 mml 24 V fan panel here: https://cults3d.com/en/3d-model/tool/panneau-arriere-qidi-x-max3-pour-ventilateur-120-mm-24-v
Nomenclature :
3D printing :
- 1 part in 3D printing: Panneau_AR_QIDI_12V.stl .
Material:
Screws :
4 Ruthex RX-M3-5.7 inserts,
4 CHC M3×35 screws,
4 CHC screws M3×5 (or M3×4 or M3×6),
4 M3 nylstop nuts,
4 M3 washers,
4 extra-large washers M3.
Tools:
1 soldering iron (for Ruthex insert installation + wire tinning),
1 voltmeter, to check the polarity of the 24V output on the QIDI board.
Assembly:
Print part Panneau_AR_QIDI_12V.stl.
Once printed, fit the 4 Ruthex RX-M3-5.7 inserts using a soldering iron (appropriate Ruthex purlins strongly recommended).
On the fan, cut the end of the cable at the connector (you can cut it shorter later if necessary). Strip the red and black wires (the yellow will not be used), and tin them.
On cable with 2.54 2-pin JST connector, strip the wire ends, and tin them if not already done.
With the machine switched off, dismantle the original backplate, taking care not to pull out the fan cable, and carefully remove it.
Connect the cable with JST 2.54 2-pin connector only (or the one recovered from the original fan, stripped and tinned).
Switch on the machine.
_ Check the polarity at the end of the cable, and clearly identify + and -. Incorrect polarity will inevitably burn out the voltage reducer.
Once the polarity has been identified, switch off the machine.
Connect the voltage reducer to the 'IN' side of the cable, observing the correct polarity.
Switch on the machine, and set the output voltage to 12 volts, using a screwdriver on component "M103".
To display the output voltage, press the small push-button on the board, which will toggle the display between input and output voltage with each click. By turning counter-clockwise, lower the output voltage to 12 volts. Several turns are required before the voltage begins to drop.
Once the voltage has been set to 12 V, switch off the machine, and disconnect the cable from the machine board.
Mount the fan and voltage regulator on the printed rear panel, using the enclosed photos as a guide. Red fan wire to the + terminal of the voltage reducer's "OUT" output, black fan wire to the - terminal of the voltage reducer's "OUT" output.
Mount the assembly on the machine, in place of the original panel.
Switch on the machine, and enjoy the silence ;) .
Other specific accessories for QIDI X-MAX 3 printer here: https://cults3d.com/fr/collections-de-designs/Ed_/accessoires-pour-qidi-x-max-3.
Don't hesitate to ask me by message for any evolution/improvement/modification you feel is necessary. If you need it, other users may also have the same need. Let's share it...
3D printing settings
Position the part in a vertical position, and 45° orientation around the Z machine, so that the part can be positioned on the QIDI table.
Use tree supports, which will also hold the part without vibration.
See photo and image for illustration.