Cairo Mini 3d-Printer: Building The X-Axis

Insert three M5 T-nuts into the aluminium profile.

Gently screw the M5x12mm screws onto the T-nuts from the back of the acrylic part. Repeat this procedure with the other two screws.

Now, your x-axis acrylic part and the 2020 aluminium profile are installed.

Place the X-axis stepper motor to the X-axis acrylic part and make sure the cable connector of the motor is oriented in the same way as in the picture. Then, secure the motor with four M3x16mm screws.

Place the X-axis stepper motor to the X-axis acrylic part and make sure the cable connector of the motor is oriented in the same way as in the picture. Then, secure the motor with four M3x16mm screws.

Insert four M5x45mm screws from the front face of the acrylic part.

Insert two eccentric nuts onto the top and bottom right screws. After the eccentric nuts, insert two
M5x3mm spacers. Then, insert the v-wheels and other M5x9mm spacers after the wheels.

Regarding the two top and bottom left screws, insert two M5x9mm spacers then the V-wheels, then another M5x9mm spacers.

Align the four holes of the X-axis 3d-printed part with the four screws and gently push the X-axis 3d-printed part into it. Secure it using four M5 nuts.

Place the T8 lead screw brass nut from the bottom of the X-axis 3d-printed part and make sure that the holes are perfectly aligned together.

Secure the T8 lead screw brass nut using four M3x16mm screws and four M3 nuts.

Install the small bearing to the extruder arm using the screw shown in the pictures.

Install the extruder seat to the 3d printed part and the stepper motor. Insert the M3x16mm screw from the top of the extruder seat into the stepper motor passing through the 3d printed part.

Install the small screw to the extruder seat as shown in the pictures. And make sure to not fully tighten it, leave a 2-3mm gap between the screw and the extruder seat.

Install the gear on the stepper motor shaft. Unscrew the gear two set screws a little bit and insert the gear into the stepper motor shaft.

Place the tension spring and the screw as shown in the pictures.

Insert The second spring tension screw as shown in the pictures.

install the extruder arm on the 3d printed part using the M3x25mm screw.

Insert two M3 standard nuts inside the endstop holder part.

Insert the two M5 T-nuts into the 2020 aluminium profile as shown in the pictures. Keep a few millimeters between them. 

Install the endstop 3d-printed holder part on the aluminium profile using two M5x10mm screws. Make sure that the two M5 t-nuts are correctly aligned with the two M5x10mm screws.

Install the endstop on the 3d-printed holder part using two M3x10mm screws. Make sure of the endstop cable orientation as shown on the images.

Simply, you need to gently slide the hotend unit into the 2020 aluminium profile. 

You should now have an assembly like that. we still need to install the idler pulley on the right end of the Aluminium profile. see next steps to continue.

Firstly, Insert two M5 t-nuts into the aluminium profile as shown in the pictures. Then install the pulley holder acrylic plate on the aluminium profile using two M5x12mm screws.

The distance between the acrylic part and the right end of the aluminium profile should be 20mm. you can adjust this distance later to tighten or untighten the X-axis belt.

Fix the M5x25mm screws on the pulley holder plate using one standard 5mm nut.

Insert the M5x2mm spacer and the idler pulley into the M5x25mm screw, then tighten the M5 acorn nut.

You should now have a fully assembled X-axis. The next step is to assemble the X-axis with the Z-axis. Check out the Z-axis assembly guide page for instructions.