Editing Step 4 —
Back and front extrusions

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Take your time with this step.

Make sure that you are workng on a flat and hard surface.

Take a joining plate and hold it against the extrusion, as shown in the 1st image. We will use it to aid in the alignment of the first joining plate

Hold the plates as shown in the 2nd image, applying pressure as shown (small green arrows), and tighten both M5x10 screws fully.

Check that your plate is flush with the face and end of the extrusion.

This is an important step as other steps will rely on the accuracy of this assembly.

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