Introduction
NOTE: all measurements in this guide assume you’re assembling the 300x300x300mm machine!
As a general rule, add 100mm to the measurements if you’re assembling a 400 machine, or 200mm if you’re assembling a 500 machine (this may not be valid for some of the measurements provided).
Video Overview
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Repeat this step for 4 Joining plates (2 are mirrored)
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Cap Head Screw M6x12
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Cap Head Screw M5x18
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Rubber foot
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Joining plate
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3030 Drop-in T-Nut M6
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3030 Drop-in T-Nut M5
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Set the T-Nuts in position, but do not tighten them just yet.
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Set up all remaining Joining Plates in the kit
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Cap Head Screw M6x12mm
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3030 Drop-in T-Nut M6
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Set T-Nuts into position, but do not tighten them just yet.
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Set up all Corner Brackets (x12) in your kit.
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Cap Head Screw M6x12
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M6 Washer
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3030 Drop-in T-Nut M6
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Set T-Nuts into position, but do not tighten them just yet.
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For the next step you will need:
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420mm 3030 extrusion
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440mm 3030 extrusion
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450mm 3030 extrusion
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Prepare the 3030 extrusions:
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440mm
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450mm
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420mm
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Attach 6 Corner Brackets to the ends of the vertical extrusions
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205mm
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Carefully attach the extrusions by tightening all screws on the Corner Brackets. Make sure the frame is perfectly square. A flat surface may help.
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Make sure the frame is square. The diagonal lengths should be equal
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The middle extrusion should be in the exact middle of the inner frame - 205mm from the side extrusions
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If you are opting for a back panel this is a good time to attach it. It's going to be difficult later.
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Panels are not supplied by Rat Rig, they are meant to be sourced locally. DXF files are provided for each panel and machine size.
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CAUTION: Panel should not be thicker than 4mm, or it will not fit.
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If needed, drill the M6 holes and fasten the Cap Head Screw M6x12 through them
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Attach the 3030 Drop-in T-Nut M6 to the screws
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Some kits may use M5x12 screws with M5 T-Nuts for this step. If this is the case for your kit, it will include 18 M5x12 Cap head screws. If not, it will include only 4 of those screws.
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Cable Management Printed Parts (Optional and not included in the kit shipped by Rat Rig)
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Fit the panel on the inner frame and fasten all of the screws
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CAUTION: These lengths are very similar, do not mix them up!
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Prepare 3030 extrusions:
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2x 505mm
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4x 510mm
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Attach the corner plate assemblies to the Z extrusions (510mm)
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Add the Y extrusion (505mm)
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Repeat for the other side of the frame
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Don't worry about the top Y extrusions - those will be added later
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Join the two frame sides with 440mm X extrusions
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Attach the bottom corner assemblies
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Add the top 440mm X extrusions
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Insert the inner frame into the main frame
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You will need to loosen the bottom corner assemblies a little
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The distance between the inner frame and the main Z extrusions should be 47mm
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Backpull the M5 hex locking nut and fasten the two printed parts together with a Cap Head Screw M5x12
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Attach the 3030 M5 T-nut to a Cap Head Screw M5x12 through the bottom part
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Fasten the endstop to the top printed part with 2x Cap Head Screws M3x10
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Thread the M6x12mm screw through the back cable guide and attach the 3030 M6 T-nut
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Screw the part the the center of the inner frame's top extrusion
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Don’t tighten too hard
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Attach the Y endstop to the frame
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VERY IMPORTANT: a frame that is not square will produce noise and will wear out parts like bearings and belts
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Go around your frame and check the diagonal lengths - those need to be as equal as possible (a difference of less than 1mm is acceptable)
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Front and back
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Right and left
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Top and bottom
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