Project Dashboard TAZ 3 Extruder Assembly, KT-CP0035 Workflow

1 Gather parts and tools for Extruder Assembly

  • Components:

    • Extruder Body
    • Extruder Idler with 608 bearing installed
    • Extruder Washer
    • Large Herringbone Gear with Hobbed Bolt
    • Small Herringbone Gear
    • Extruder Latch
    • Motor -2
    • 608 Bearing
    • Extruder Spring
    • M3 x 6mm set screw
    • M3 x 12 SHCS
    • M3 x 25 SHCS
    • M3 Nut, Zinc
    • M3 Washer
    • M4 x 55 SHCS with Thumb Screw Knob
    • M4 Nut, Zinc
    • M4 Washer
    • M8 Nyloc Nut
    • M8 Washer
    • M8 Shim Washer 0.5mm
    • M8 Shim Washer 1..0mm
  • Tools:

    • 1.5mm Allen Driver
    • 2.5mm Allen Driver
    • 13mm Wrench
1.5mm allen driver
2.5mm allen driver
13mm wrench

2 Install Idler bolt

Install M3 x 25 SHCS, M3 Washer and M3 Nut into the Idler assembly.
Only put the screw in till the tip is flush with the nut.

Tip: Set M3 Nut into hexagon cutout and hold with your finger to install the bolt.

idler bolt

3 Install extruder washer into body

Place the printed extruder washer into the extruder body.

Body and Washer
Washer Installed

4 Install gear, bolt and first bearing

Install 4x M8 washes onto hobbed bolt then a 608 bearing.
Once installed, does the hobbing on the bolt line up with the small hole going thru the extruder body?
If you need to adjust it's location, you can add either a 0.50mm or 1.0mm shim washer to get the correct spacing.

gear, bolt, washers and bearing
pushed in to check hobbing location

5 Install second bearing

On the opposite side of the gear, add a 608 bearing, M8 Washer and a M8 locknut.
Tighten the Locknut down until the bearing is seated and there is no space between the Nut, Washer and Bearing.
The large gear shouldn't be able to rock back and fourth but should spin freely.

second bearing, washer, nut

6 Install Idler onto body

Install extruder idler onto the body.
Tighten the M3 x 25, SHCS bolt down to secure the Idler

Tip: Place the leg with the nut on the body first and twist the Idler onto the body.

Idler installation

7 Small gear assembly

Install the M3 nut into the bottom of the small herringbone gear.
Then install the M3 x 6mm set screw through the side of the small gear and into the nut.
Be sure the M3 x 6mm set screw does not protrude into the hole through the small gear.

Install Nut
Install set screw

8 Install gear on motor

Locate the flat side of the motor shaft.
With the set screw aligned with the flat, slide the small gear onto the motor shaft.
The location will be adjusted later so positioning isn't important at this point.
Do not tighten the set screw yet.

small gear on motor shaft

9 Install Motor

Holding the motor in the location where it will be mounted, align the herringbone gears by sliding the small gear in or out on the motor shaft so the V-grooves are centered on each other.
Install motor using 3x M3 x 12mm SHCS and 3x M3 washers, taking note of the orientation of the motor wires.
Push the gears together while you tighten the bolts to make sure the contact is tight.
Tighten the set screw on the small herring bone gear.

bolt locations
gear alignment

10 Install M4 nuts into top of body

Install 2x M4 nuts into the top of the extruder body as shown.
Make sure you can see the nuts from the side so you can install bolts later.

Tip: Nuts only go in one way, the flats of the nut must be vertical.

Nuts in body from top
Nuts in body from side

11 Install idler tensioner

Install M4 x 55 with thumb knob, M4 washer, extruder spring, M4 washer and Extruder latch into M4 nut installed in body.
Then put another M4 x 55 with thumb knob, M4 washer, extruder spring, M4 washer through the Extruder latch and into the body.

Prep parts for assembly
Idler tensioner assembly

12 Review the Extruder Assembly

Review your assembly for workmanship.

Extruder Final
Done! Take me home