3. Z-axis assembly

Z-axis-bottom

Z-axis-top

2x Z-screw-cover

Take the two stepper motors with integrated screw (Tr8x8)

Remove the brass nut from the screws manually

Screw the Z-screw-cover on both motors

Do not tighten the screw-cover, leave at least 0.1mm space between motor and the plastic part

Z-axis bottom part

3x M3x18 screws

3x M3 self-locking nut

Screw the plastic part to bottom of the frame as shown on picture, and lock using the nuts from the other side

Repeat the step for the opposite side

Make sure that you mount left part on left, and right on right, the 8mm hole must be facing outside on both parts

For each motor take 4x M3x10 screw and 4x M3 washer

Screw the motors to the Z-bottom plastic parts as shown on photo

Make sure the correct orientation of motor connector

Take the X-axis built before, trapezoidal nuts removed from motors screws, 4x M3x12 screws and 4x M3 nuts

Insert the M3 nuts as shown on picture

Put the trapezoidal screw on top and screw it using M3x12 screws

You have to put the trapezoidal nut as shown on image, as otherwise you will not be able to assemble it (unless you have a short nuts)

Repeat the steps for the other side of X-axis

Take the shortest smooth rods (the ones whose left ... 320mm length)

Insert the rods into Z-bottom plastic parts as shown on image

Take the X-axis and gently screw put it on top of Z-axis, moving motor screws to do it

Do it gently!

Using 2x M3x18 screw and 2x M3 self locking nut assemble the Z-axis-tops to this contruction

Probably you will have to use a small amount of force to insert the part on smooth rod

Repeat this step for the other side

Put the Z-axis on Y-axis as shown on image

Make sure the side support enters the main frame

Probably a small amount of force will be needed to achieve it

Tightening the plywood parts will be done in next step

Using 6x M3x30 screws and M3 nuts tighten the front to the side supports

Start from the top screws

To hold nut while screwing use small pliers

Make sure that you tighten it strongly, so there is no space between front and side supports

Tighten the M10 nuts on the bottom

At first, gently screw the two M10 nuts to the frame

Then screw and tighten the M10 nut from the other side

Make sure that you put the M10 rod as low as possible (check if the contruction is stable on flat surface)

Do this step for both M10 rods

Start guiding the X-axis belt from the back to the side of x-end-idler

Guide thru x-end-idler

Guide back thru X-carriage, there is a special hole for that, to the X-end-motor

Loosen the two screws on X-axis motor and turn a little the motor

Guide the belt around GT2-16 pulley

Take the belt back to X-carriage and secure there tightly

Move the motor back to the position and screw the M3 screws again

Make sure that the belt is tightened enough (and NOT overtightened)

The Z-axis has been fully assembled! Congratulations, that construction is looking like almost a printer!

If you still have some time, go to Extruder assembly