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  1. 2x T-Slot extrusion 40120 - 120mm
    • 2x T-Slot extrusion 40120 - 120mm

    • 2x Extruded 90º Corner for 40 series - 8040 Tall - Black

    • 4x M8x20 Cap Head Screws

    • 56x M8x18 Cap Head Screws

    • 2x Rat Rig Mill - Z Side Plate

    • 60x M8 4040 Drop in T-nuts

    • 60x M8 Washer

    • 2x T-Slot extrusion 4080 - 400mm

  2. Repeat the following steps to assemble two Z-side plates, Make sure the second assembly is a Mirror of the first. Rat Rig Mill - Z Side Plate
    • Repeat the following steps to assemble two Z-side plates, Make sure the second assembly is a Mirror of the first.

    • Rat Rig Mill - Z Side Plate

    • 28x M8 Washer

    • 28x M8x18 Cap Head Screws

    • 28x M8 4040 Drop in T-nuts

    • Assemble the components as shown.

  3. Extruded 90º Corner for 40 series - 8040 Tall - Black 2x M8x20 Cap Head Screws 2x  M8 4040 Drop in T-nuts
    • Extruded 90º Corner for 40 series - 8040 Tall - Black

    • 2x M8x20 Cap Head Screws

    • 2x M8 4040 Drop in T-nuts

    • Assemble the components as shown.

    • 1x T-Slot extrusion 4080 - 400mm

    • Fasten the Extrusion to the Z side plate, ensuring it sit flush with the Z side plate edges.

    • Assemble a second mirrored Z side plate, as shown.

  4. Z right side plate assembly Fasten the assembly using the lower M8 screws.
    • Z right side plate assembly

    • Fasten the assembly using the lower M8 screws.

    • Ensure the extrusion is square with the Y-axis extrusion. Take your time to align this as best as possible.

  5. T-Slot extrusion 40120 - 120mm Using the marked screws, secure the extrusion to the right side Z plate.
    • T-Slot extrusion 40120 - 120mm

    • Using the marked screws, secure the extrusion to the right side Z plate.

  6. SN04-N2 Proximity Sensor
    • SN04-N2 Proximity Sensor

    • 2x M8x25 Cap Head Screws

    • 2x M3x18 Cap Head Screws

    • mill_z_endstop_mount assembly

  7. 2x M3x18 Cap Head Screws SN04-N2 Proximity Sensor mill_z_endstop_mount assembly
    • 2x M3x18 Cap Head Screws

    • SN04-N2 Proximity Sensor

    • mill_z_endstop_mount assembly

    • Attach the endstop to the mill_z_endstop_mount assembly

    • 2x M8x25 Cap Head Screws

    • T-Slot extrusion 40120 - 120mm

    • Assemble the Z endstop mount to the T-Slot extrusion 40120 - 120mm

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

  8. T-Slot extrusion 40120 - 120mm with Z endstop (from the last step) Using the marked screws, secure the extrusion to the right side Z plate.
    • T-Slot extrusion 40120 - 120mm with Z endstop (from the last step)

    • Using the marked screws, secure the extrusion to the right side Z plate.

  9. Z left side plate assembly Fasten the assembly using the lower M8 screws.
    • Z left side plate assembly

    • Fasten the assembly using the lower M8 screws.

    • Fasten the assembly to the small Z tower extrusion using the marked screws.

    • Fasten the assembly to the small Z tower extrusion using the marked screws.

    • Ensure the extrusion is square with the Y-axis extrusion. Take your time to align this as best as possible.

  10. Rat Rig Mill - Shield panel 1.2mm v1.2
    • Rat Rig Mill - Shield panel 1.2mm v1.2

    • mill_z_tower_top printed part

    • mill_y_axis_rear_cover printed part

    • 4x M12x15 Countersink Screws

    • 2x M8x16 Cap Head Screws

    • 2x M8 4040 Drop in T-nuts

    • 4x M3 4040 Drop in T-nuts

    • 4x M3x12 Cap Head Screws

  11. Z tower assembly mill_z_tower_top printed part
    • Z tower assembly

    • mill_z_tower_top printed part

    • 4x M12x15 Countersink Screws

    • Assemble the tower top as shown.

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

  12. mill_y_axis_rear_cover printed part 2x M8x16 Cap Head Screws 2x M8 4040 Drop in T-nuts
    • mill_y_axis_rear_cover printed part

    • 2x M8x16 Cap Head Screws

    • 2x M8 4040 Drop in T-nuts

    • Assemble the Y axis rear cover as shown.

    • Install it on the Z tower, making sure it is sitting flush with the Y axis extrusion and Z tower extrusion.

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

  13. Rat Rig Mill - Shield panel 1.2mm v1.2 The panel is reversible, there is no correct side to install it. 4x M3x12 Cap Head Screws
    • Rat Rig Mill - Shield panel 1.2mm v1.2

    • The panel is reversible, there is no correct side to install it.

    • 4x M3x12 Cap Head Screws

    • 4x M3 4040 Drop in T-nuts

    • Install the shiel panel on to the Z tower.

  14. SN04-N2 Proximity Sensor
    • SN04-N2 Proximity Sensor

    • 2x M3x18 Cap Head Screws

    • 4x Leveling Feet for 3030 - M8 x 30mm

    • 4x Hex Locking Nut - M8

  15. SN04-N2 Proximity Sensor 2x M3x18 Cap Head Screws
    • SN04-N2 Proximity Sensor

    • 2x M3x18 Cap Head Screws

    • Using the M3x18 Cap Head screws, fasten the endstop to the right Z side plate.

  16. Leveling Feet for 3030 - M8 x 30mm 2x Hex Locking Nut - M8
    • Leveling Feet for 3030 - M8 x 30mm

    • 2x Hex Locking Nut - M8

    • Feed the feet screw trought the Extruded 90º Corner for 40 series - 8040 Tall - Black from the bottom and thread the Hex Locking Nut - M8, it's a tight space, needle nose pliers might be useful.

  17. Leveling Feet for 3030 - M8 x 30mm 2x Hex Locking Nut - M8
    • Leveling Feet for 3030 - M8 x 30mm

    • 2x Hex Locking Nut - M8

    • Feed the feet screw trought the Extruded 90º Corner for 40 series - 8040 Tall - Black from the bottom and thread the Hex Locking Nut - M8, it's a tight space, needle nose pliers might be useful.

  18. Rat Rig Mill - Z Plate 4x M8x12 Low Head Screws Ensure that the screws are inserted from the same side as the M8 screw head slots on the plate.
    • Rat Rig Mill - Z Plate

    • 4x M8x12 Low Head Screws

    • Ensure that the screws are inserted from the same side as the M8 screw head slots on the plate.

    • 2x M8 4040 Drop in T-nuts

  19. Place the Z plate on the Z tower as shown. Ensure the M5 slots are facing upwards. Ensure the Z plate is flush with both Z side plates before tightening the screws.
    • Place the Z plate on the Z tower as shown.

    • Ensure the M5 slots are facing upwards.

    • Ensure the Z plate is flush with both Z side plates before tightening the screws.

    • Tighten the M8 Screws to secure the assembly.

Finish Line

Rat Rig

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