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  1. Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly
    • Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

    • Left Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

    • 2x Nema 17 Stepper motor - HT - 48mm

    • 2x 20 Tooth 2GT Timing Pulley for 9mm Belt

    • 6x M3x6 Countersink Screws

  2. 3x Aluminium spacer 5x8x4mm
    • 3x Aluminium spacer 5x8x4mm

    • 1x Aluminium spacer 5x8x14mm & Aluminium spacer 5x8x17mm

    • 5x Mini precision shim 8x5x1mm

    • 6x Ball bearing 695ZZ

    • 14x Ball bearing F695ZZ

    • Right vc4_motor_spacer

    • Left vc4_motor_spacer

    • 4x M5x45 Cap Head Screws

  3. Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly Ensure the t-nuts are on the same side as the countersink bores. Nema 17 Stepper motor - HT - 48mm
    • Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

    • Ensure the t-nuts are on the same side as the countersink bores.

    • Nema 17 Stepper motor - HT - 48mm

    • Be mindful of the cable orientation, it should replicate the image.

    • 3x M3x6 Countersink Screws

    • Insert the M3x6 screws into the Right Stepper motor plate assembly as shown, and fasten them to secure the NEMA17 motor.

  4. Refer to the side of the assembly which has the M5 holes Remove the two M6x12 Cap Head Screws Remove the two 3030 Drop-in T-Nut - M6
    • Refer to the side of the assembly which has the M5 holes

    • Remove the two M6x12 Cap Head Screws

    • Remove the two 3030 Drop-in T-Nut - M6

    • Right vc4_motor_spacer

    • Install the printed part next to the nema 17 stepper motors, and make sure the holes are aligned.

    • Insert the two M6x12 Cap Head Screws

    • Insert the two 3030 Drop-in T-Nut - M6

    • Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

  5. Ensure the right vc4_motor_spacer printed part is aligned with the plate Insert the M5x45 Cap Head Screws all the way Once inserted, the printed part should be able to hold them in place
    • Ensure the right vc4_motor_spacer printed part is aligned with the plate

    • Insert the M5x45 Cap Head Screws all the way

    • Once inserted, the printed part should be able to hold them in place

    • Install the timing pulley onto the NEMA17 shaft, oriented as shown

    • The timing pulley will be aligned and fully secured in a later step.. Do not tighten the M3 grub screws

  6. Install the following components in the order shown in the image: Mini Precision Shim F695ZZ Ball Bearing (Flange at the bottom)
    • Install the following components in the order shown in the image:

    • Mini Precision Shim

    • F695ZZ Ball Bearing (Flange at the bottom)

    • 695ZZ Ball Bearing

    • F695ZZ Ball Bearing (Flange at the top)

    • Insert a Mini Precision Shim on the rear M5x45 Screw

  7. Install the following components on the rear M5x45 Screw in the order shown in the image: F695ZZ Ball Bearing (Flange at the bottom) 695ZZ Ball Bearing
    • Install the following components on the rear M5x45 Screw in the order shown in the image:

    • F695ZZ Ball Bearing (Flange at the bottom)

    • 695ZZ Ball Bearing

    • F695ZZ Ball Bearing (Flange at the top)

    • Install an Aluminium spacer 5x8x4mm on the rear M5x45 Screw

    • Install an Aluminium spacer 5x8x17mm on the front M5x45 Screw

    • Set the assembly aside, let's assemble the left stepper motor.

  8. Left Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly Ensure the t-nuts are on the same side as the countersink bores. Nema 17 Stepper motor - HT - 48mm
    • Left Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

    • Ensure the t-nuts are on the same side as the countersink bores.

    • Nema 17 Stepper motor - HT - 48mm

    • Be mindful of the cable orientation, it should replicate the image.

    • 3x M3x6 Countersink Screws

    • Insert the M3x6 screws into the Right Stepper motor plate assembly as shown, and fasten them to secure the NEMA17 motor.

  9. Refer to the side of the assembly which has the M5 holes Remove the two M6x12 Cap Head Screws Remove the two 3030 Drop-in T-Nut - M6
    • Refer to the side of the assembly which has the M5 holes

    • Remove the two M6x12 Cap Head Screws

    • Remove the two 3030 Drop-in T-Nut - M6

    • Left vc4_motor_spacer

    • Install the printed part next to the nema 17 stepper motors, and make sure the holes are aligned.

    • Insert the two M6x12 Cap Head Screws

    • Insert the two 3030 Drop-in T-Nut - M6

    • Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

  10. Ensure the left vc4_motor_spacer printed part is aligned with the plate Insert the M5x45 Cap Head Screws all the way Once inserted, the printed part should be able to hold them in place
    • Ensure the left vc4_motor_spacer printed part is aligned with the plate

    • Insert the M5x45 Cap Head Screws all the way

    • Once inserted, the printed part should be able to hold them in place

    • Install the timing pulley onto the NEMA17 shaft, oriented as shown

    • The timing pulley will be aligned and fully secured in a later step. Do not tighten the M3 grub screws

  11. Insert a Mini Precision Shim on the rear M5x45 Screw Install an Aluminium spacer 5x8x14mm on the front M5x45 Screw Install the following components on the rear M5x45 Screw in the order shown in the image:
    • Insert a Mini Precision Shim on the rear M5x45 Screw

    • Install an Aluminium spacer 5x8x14mm on the front M5x45 Screw

    • Install the following components on the rear M5x45 Screw in the order shown in the image:

    • F695ZZ Ball Bearing (Flange at the bottom)

    • 695ZZ Ball Bearing

    • F695ZZ Ball Bearing (Flange at the top)

    • Insert a Mini Precision Shim on the rear M5x45 Screw

  12. Install the following components in the order shown in the image: F695ZZ Ball Bearing (Flange at the bottom) 695ZZ Ball Bearing
    • Install the following components in the order shown in the image:

    • F695ZZ Ball Bearing (Flange at the bottom)

    • 695ZZ Ball Bearing

    • F695ZZ Ball Bearing (Flange at the top)

    • Aluminium spacer 5x8x4mm

    • Set the assembly aside. it will be used in a few steps

  13. 4x M5 Hex Locking nut
    • 4x M5 Hex Locking nut

    • 8x 3030 Drop-in T-Nut - M6

    • 8x M6x12 Cap Head Screws

    • 2x M3x40 Countersink Screw

    • 2x Aluminium Spacer 3x6x30mm

    • The metal plates are not marked with "R" or "L" Please refer to the orientation to help identify them.

    • vc4_trim_coreXY_right and vc4_trim_coreXY_left

    • vc4_xy_motor_upper_right and vc4_xy_motor_upper_left

  14. vc4_trim_coreXY_right 2x M5 Hex Locking nut Insert the M5 Hex Locking nut upside down.
    • vc4_trim_coreXY_right

    • 2x M5 Hex Locking nut

    • Insert the M5 Hex Locking nut upside down.

    • vc4_xy_motor_upper_right

    • Ball bearing F695ZZ

    • Insert the Ball bearing F695ZZ with the flange at the top

    • Ensure the bearing flange is on the same side as the countersink bore.

  15. vc4_xy_motor_upper_right assembly vc4_trim_coreXY_right assembly Insert the four M6x12 Cap Head Screws
    • vc4_xy_motor_upper_right assembly

    • vc4_trim_coreXY_right assembly

    • Insert the four M6x12 Cap Head Screws

    • Insert the four 3030 Drop-in T-Nut - M6

    • Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

  16. Repeat Steps 14 and 15 and complete the left assembly
    • Repeat Steps 14 and 15 and complete the left assembly

  17. Place the right stepper motor assembly from Step 12 in the frame
    • Place the right stepper motor assembly from Step 12 in the frame

  18. Install the right stepper motor assembly to the V-Core 4 frame as shown Tighten the four M6x12 screws to secure the motor_plate assembly to the frame Make sure the plate is fully seated against the 3030 extrusion before tightening the M6x12 screws
    • Install the right stepper motor assembly to the V-Core 4 frame as shown

    • Tighten the four M6x12 screws to secure the motor_plate assembly to the frame

    • Make sure the plate is fully seated against the 3030 extrusion before tightening the M6x12 screws

    • Take care not to over tighten the M6x12 screws as you can damage the printed parts

  19. Right top stepper motor assembly from Step 16 Make sure the plate is fully seated against the 3030 extrusion. Insert the Aluminium Spacer 3x6x30mm between the top and bottom plates
    • Right top stepper motor assembly from Step 16

    • Make sure the plate is fully seated against the 3030 extrusion.

    • Insert the Aluminium Spacer 3x6x30mm between the top and bottom plates

    • Insert the M3x40 countersink screw through the top plate, the aluminium spacer 3x6x30mm, and the bottom plate. Do not thread it to the stepper motor at this stage

  20. Progressively tighten both M5x45 screws, alternating between them, so the top plate assembly is pulled down uniformly. Take care not to over tighten the M5x45 screws as you can damage the printed parts
    • Progressively tighten both M5x45 screws, alternating between them, so the top plate assembly is pulled down uniformly.

    • Take care not to over tighten the M5x45 screws as you can damage the printed parts

    • Tighten the M3x40 countersink screw to to nema 17 stepper motor thread.

    • Tighten the four M6x12 screws to secure the motor_plate assembly to the frame

    • Make sure the plate is fully seated against the 3030 extrusion before tightening the M6x12 screws

    • Take care not to over tighten the M6x12 screws as you can damage the printed parts

  21. Repeat Steps 17 to 20 and install the left stepper motor to the V-Core 4 frame.
    • Repeat Steps 17 to 20 and install the left stepper motor to the V-Core 4 frame.

  22. Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0
    • Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0

    • Rat Rig V-Core 4.0 - Tensioner Body - Left v1.0

    • 6x M4x30 Cap Head Screw

    • 2x M5x22 Countersink Screw

    • 2x M4x6 Set Screw

    • 2x M4x20 Cap Head Screw

  23. 4x Mini precision shim 8x5x1mm
    • 4x Mini precision shim 8x5x1mm

    • 4x Ball bearing F695ZZ

    • 2x Ball bearing 695ZZ

    • 2x Rat Rig V-Core 4.0 - Tensioner Arm v1.0

  24. Rat Rig V-Core 4.0 - Tensioner Arm v1.0 Install the following components in the order shown in the image: Mini Precision Shim
    • Rat Rig V-Core 4.0 - Tensioner Arm v1.0

    • Install the following components in the order shown in the image:

    • Mini Precision Shim

    • F695ZZ Ball Bearing (Flange at the top)

    • 695ZZ Ball Bearing

    • F695ZZ Ball Bearing (Flange at the bottom)

    • Mini Precision Shim

  25. Insert the M5x22 Countersink Screw and tighten it to secure the assembly. Repeat Steps 25 and 26 to assemble another tensioner arm Repeat Steps 25 and 26 to assemble another tensioner arm
    • Insert the M5x22 Countersink Screw and tighten it to secure the assembly.

    • Repeat Steps 25 and 26 to assemble another tensioner arm

  26. Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0 3x M4x30 Cap Head Screws Insert the screws through the holes on the V-Core 4 frame extrusion and thread them in the Tensioner Body - Right v1.0.
    • Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0

    • 3x M4x30 Cap Head Screws

    • Insert the screws through the holes on the V-Core 4 frame extrusion and thread them in the Tensioner Body - Right v1.0.

    • Tighten the M4x30 cap head screws.

  27. Front tensioner arm assembly from Step 26 Insert the tensioner arm in the lower slot of the tensioner body. Make sure the tensioner arm has cleared the hole on the tensioner body.
    • Front tensioner arm assembly from Step 26

    • Insert the tensioner arm in the lower slot of the tensioner body.

    • Make sure the tensioner arm has cleared the hole on the tensioner body.

    • M4x20 Cap Head Screw

    • Insert the screw trough the tensioner body and lightly thread it to the tensioner arm.

    • The M4x20 screw must be partially, but not fully, threaded into the tensioner arm. This allows the largest possible range for tensioning the belts further in the guide.

  28. M4x6 Set Screw Tighten the Screw to secure the tensioner arm in place Repeat Steps 27 to 29 and assemble the Left front tensioner
    • M4x6 Set Screw

    • Tighten the Screw to secure the tensioner arm in place

    • Repeat Steps 27 to 29 and assemble the Left front tensioner

  29. Your V-Core 4 should look like this at this stage Don't forget to drink some water! Stay hydrated.
    • Your V-Core 4 should look like this at this stage

    • Don't forget to drink some water! Stay hydrated.

Finish Line

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Rat Rig

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