Load Filament

Summary

The procedure that follows explains how to load the filament through the feed path.

Estimated time: 30 minutes

A filament feed path upgrade kit is available to purchase directly from AON3D. The benefits of the filament feed path upgrade kit lowers the friction between the filament and the PTFE tube, which allows the material to be fed to the extruder with less restrictions. This upgrade also increases the bending radii of the feed path, which reduces the risk of the filament breaking inside the feed tube. Please reach out to our Customer Success team at help@aon3d.com for details.

Tools

Qty Description Specification
1 Wire Cutters N/A

Parts Information

None required.

Personal Protective Equipment

Qty Description Specification
1 Safety Eyewear N/A

Prepare the Machine

  1. Home XYZ.
  2. Lower the Z-axis by 300 mm.
  3. Wait until the build chamber, build plate and hot ends are at room temperature.

Prepare Filament

  1. Unpack the spool of filament.

    Make sure spool orientation is placed as such that the filament is looped and fed from the back of the spool once installed. Refer to illustration below.

    Filament Roll Orientation
  2. Insert the filament spool holder tube through the center hole of the spool.
  3. Place the filament roll onto the spool holder brackets found at the back panel of the machine.
  4. Unthread the end of the filament from the spool. Straighten out the filament.

    Make sure that filament is unrolled from spool without any tangles. Filament tangles will cause extruder to jam and cause print failure.

  5. Cut a 45° angle on the filament end with the wire cutters. The sharp tip helps the filament through the feed path. Filament Cut Tip

Insert Filament

  1. Disconnect the PTFE tube (2) found at the top of the extruder body. Press down on the fitting (1) with one hand and carefully pull out the PTFE tube (2) with the other hand. PTFE Tube
  2. Insert the filament through the filament detector. Insert Filament
  3. Carefully feed the filament until it appears at the other end of the PTFE tube, found on the inside the build chamber.

If the feed path upgrade kit is installed on the machine, some effort might be needed to feed the filament through the sensor found in the filament runout detector. If a restriction is met, carefully pull the filament out and straighten it. Make sure the filament has a sharp 45° angle cut on the end. It may take several attempts, but this process requires minimal force.

Preheat the Hot End(s)

Do not touch the hot ends when toolhead heaters are active. Temperatures in the hot ends range from 200°C-450°C (390°F-840°F) and will result in thermal injury (burns) to personnel.

When facing the front of the machine:
• The T0 (toolhead 0) is found on the left-hand side of the X-axis linear rail,
• The T1 (toolhead 1) is found on the right-hand side of the X-axis linear rail.

Preheat the hot ends to the extrusion temperature for the chosen material using the user interface (touchscreen) as follows:

  1. Tap on the Temp tab on the left-hand side of the screen.
  2. For T0, tap the Target box, input the temperature.
  3. Tap the return key at the bottom right-hand corner of the keyboard.
  4. Do steps 1 to 3 for T1. Temperature screen set to print ABS

Load Extruder and Purge

With the user interface (touchscreen), place T0 and T1 at the center of the X and Y axes for ease of access to help load extruders.

  1. Make sure the hot end has reached the target temperature.
  2. Found on top of each extruder body is a tab (3) and a lever (4). Dyze Extruder Tab and Lever Overview.
  3. Compress both the tab (3) and lever (4) together with light finger pressure to temporarily lock the internal gears apart and allow filament to pass through. Squeeze the lever (left) and small tab (right) together to disengage the extruder. Push the lever to re-engage.

    Do not force the filament through the assembly. The PTFE guide tube (found between the extruder and the heater block) will get damaged and create a restriction in the feed path.

    If a restriction is felt when the filament is inserted, remove and straighten it. Make sure the filament has a sharp 45° angle cut on the end. It may take several tries to insert the filament, but this process should require minimal force.

  4. Insert the filament from the top of the extruder until it reaches the tip of the nozzle. Since the hot end is at an elevated temperature at this point, filament will exit the nozzle.

    If a restriction is encountered as filament first enters the extruder body, engage and disengage the extruder gears and carefully push the filament through the extruder. This will help line up the end of the filament between the drive gears.

    If the filament passed through the extruder, but will not feed into the PTFE guide tube, rotate the filament above the extruder to change the angle of approach when inserting the filament into the PTFE guide tube. Make sure filament is straight and that the end is cut at a 45° angle.

  5. Once the filament end has reached the base of the nozzle, compress the extruder tab (1) and lever (2) to release the locking mechanism and engage the extruder drive gears onto the filament. Once drive gears are engaged, the filament cannot be manually pulled from the extruder.
  6. Install the PTFE tube (2) into the fitting (1).
  7. On the user interface (touchscreen), navigate to the Control tab.
  8. Select the Left Tool, set the extrusion distance to 100, and set the extrusion speed to 5. Extrude Screen
  9. On the bottom right-hand side of the screen, tap the Extrude button twice to feed 200 mm of the filament into the hot end. Filament will now be extruded from the nozzle.
  10. Do steps 1 to 9 for the T1. Select Right Tool on control tab.

    Turn off the hot end heater(s) if the machine is not ready for operation. Leaving the hot end heater(s) on for extended periods of time without extruding can burn the polymer filament and cause clogs in the nozzle(s). The heater timeout feature can be enabled to automatically turn off the hot end after a period of inactivity.

Last modified: June 15, 2021