10. Extruder

TriangleLab TBG Air extruder

Action

TriangleLab recommends to apply thermal paste around the nozzle tube and tube holder. By loosen the set screw, the tube holder will fall out.

Sometimes filament-jamming or step-skipping keep happen. Here are some possible reasons:

1. Heat creep and filament residual stuck on the inner wall of  the nozzle tube. 

   • Disable the heat sink fan, heat up to the melting temperature and clean the channel with a nozzle needle.

   • When the nozzle is cooled, loosen the set screw and turn the nozzle so the thermal paste can be more evenly distributed.

2. The stepper gear and the 1st metal gear inside the extruder are meshed too tightly.

   • As shown in the 2nd picture, loosen the bolts for the steppers and push the stepper toward the loose side.

3. The metal gears inside the extruder need lubrication.

   • Lubricate ONLY the mesh gears with minimal amount of oil. Wipe the excess oil out. Don't contaminate the IGUS plastic self-lubricated bearings (light yellow color).

TriangleLab TBG Air extruder

TBG Air ↔ Extruder mount

• TBG Air

• Printed extruder mount (STL here)

• RH M4 x 10 (2)

Extruder mount ↔ DAB slider

• Washer 3 x 8 x 0.8 (4)

• Nut m3 (4)

Action

Assemble the extruder and its mount as shown in the picture. Refer to the DAB manual for how to attach the extruder mount to DAB.

A set screw is located in the heatsink as shown in the last picture to hold the hotend.

Note that TriangleLab uses 3 different kinds of bolts to connect the stepper and the extruder. Differentiate them if you need to disassemble the extruder.

EBB board temperature consideration

The EBB PCBA is a commercial grade product which is not designed to work in a heated chamber. Although from user feedback it works in a 65°C chamber for hours, but a traditional route with multiple wires to the extruder is still recommended.

Side cooling scheme

• 12cm blower Delta BFB1224GH (2)

• Side cooling printed parts (STL here)

• Round-head bolt M5 x 10 (4)

• Round-head bolt M4 x 45 (4)

• Bolt M3 x 10 (30)

• Flanged nut M5 (4)

• Nut M4 (4)

• Nut M3 (12)

• Square nut M3 (16)

• Nyloc nut M3 (2)

• Washer 3 x 8 x 0.8 (30)

Actions

Assemble the side air boxes as shown in the pictures. For the default TBG Air extruder and hotend, lift the air boxes to the highest point and align the blowers to the air boxes.

Air flow collector

• Air flow collectors (STL here)

• Bolt M3 x 10 (2)

• Nyloc nut M3 (2)

Actions

Assemble the air flow collectors as shown in the picture. You might need to remove the 4010 heat sink fan on the extruder first.