Introduction
Please note: This guide is based upon using two 80mm spindle mounts and an 80mm spindle. The required mounts, and number of them, will depend on your choice of spindle.
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In the pursuit of a sturdier machine, Rat Rig updated the Z plate allowing for a stiffer spindle mount, the Rat Rig spindle mount!
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Carefully identify your Z plate layout:
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Z Plate V1.0 - compatible only with the Openbuilds spindle mount
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Z Plate V1.1 - compatible only with the Rat Rig spindle mount
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Identify the spindle mount included in your kit:
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2x OpenBuilds Style Spindle Mount - 80mm
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8x 90 Degree Corner Connector
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4x M5x20 Cap Head Screw - Low Profile
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8x M5x8 Button Head Screw
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8x M5x10 Button Head Screw
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OpenBuilds Style Spindle Mount - 80mm
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M5x20 Cap Head Screw - Low Profile
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Insert an M5x20 screw through each hole in the spindle mount front and secure it into the spindle mount body
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Do not fully fasten the M5x20 screws at this point. They will be used to hold the spindle in place later in the assembly
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90 Degree Corner Connector
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M5x8 Button Head Screw
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Insert an M5x8 screw through each 90 degree corner connector and fasten fully into the spindle mount
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Spindle mount assembly from the previous step
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90 Degree Corner Connector
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M5x8 Button Head Screw
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Insert an M5x8 screw through each 90 degree corner connector and fasten fully into the spindle mount
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Spindle Mount Assembly
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Align the spindle mount with the M5 threaded holes on the Z-axis
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M5x10 Button Head Screw
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Insert an M5x10 screw through each 90 degree corner connector and tighten into the threads on the Z-axis
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Check that the spindle mount is flush and square with the Z-axis plate as shown
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M5x10 Button Head Screw
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Insert an M5x10 screw through each 90 degree corner connector and tighten into the threads on the Z-axis
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Repeat the instructions in Steps 5 & 6 to install the top spindle mount
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80mm Spindle
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Insert the spindle into the mounts as shown
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M5x20 Cap Head Screw - Low Profile
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Tighten the M5x20 screws to secure the spindle in to the mounts
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Rat Rig 80mm Spindle Mount
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4x M6x70 Cap Head Screw
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4x M6 Square nut
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4x M8x30 Low Profile Cap Head Screw
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2x M8x12 Low Profile Cap Head Screw
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12x M8x22 Cap Head Screw
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Rat Rig Spindle Mount - 80mm
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M8x30 Low Profile Cap Head Screw
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M8x12 Low Profile Cap Head Screw
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Insert the screws through each hole in the spindle mount and secure it into the spindle mount body
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Assembly from the previous step
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M6x70 Cap Head Screws
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Square nut M6
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Do not fully fasten the M6x70 screws at this point. They will be used to hold the spindle in place later in the assembly
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Spindle mount assembly
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M8x22 Cap Head Screws
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Place the screws in the designated holes, they will be tightened on the next step.
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Spindle Mount Assembly
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Mount the Spindle mount assembly on to the Z-Axis
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Tighten the M8x22 screws
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Repeat the instructions in Steps 5 to install the top spindle mount
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80mm Spindle
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Insert the spindle into the mounts as shown
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Tighten the M6x70 screws to secure the spindle in to the mounts
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When assembling the cooling circuit for your rig with a water-cooled spindle, please take this tip into account.
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Allow the liquid hoses to move freely by themselves, do not constrain their movement.
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Do not insert them into the drag chains, as the constricted pathways and tight bends may potentially result in punctures or leaks, thereby leading to machine malfunction.
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