1. Y-axis assembly

y-axis-rear

y-axis-front

y-idler

y-motor-holder

2x y-rear-spacer

y-belt-holder

2x M10x430mm threaded rod

12x M10 washer

14x M10 nut

Screw the nuts and washers as it on photo. Four nuts and washers should not be used right now.

Order of nuts and washers:

--WN-NW-WNN-NW--

Where W - washer, N - nut

The fastest way is to start with the three nuts and then adding the washers and nuts

Insert M10 threaded rods into y-axis-front

Make sure that you put the y-axis-front on M10 rods from side with one nut

Screw M10 washer and nut on both rods gently

Do not tighten the nuts right now

Take one of the shorter M8 threaded rods and put it into y-axis-front as its on photo

Insert the M8 washer and screw M8 nut

Screw the M8 rod a little bit, and then screw a M8 nut and insert M8 washer

Insert the y-idler on threaded rod

Insert the remaining M8 washers and M8 nuts as shown on pictures

Insert the second shorter M8 rod as on photos, and insert the washers and nuts

Ensure that all the washers and nuts are inserted as on photo

Insert the y-axis-rear on opposite side of M10 rods and insert M10 washers and nuts as on photos

Insert the two longer M8 rods to x-axis-rear and then screw two M8 nuts and insert M8 washers

Insert the Y-motor-holder and screw the rods thru it and all of the part

DO NOT insert M8 washers and M8 nuts on the second end of the y-axis-rear part

Insert the 400mm linear shaft on top of the construction (in r1 was 350mm)

Adjust and tighten the M10 nuts holding y-end rear and front

There should be no free space between plastic parts and the linear shafts

Remove the linear shafts

Put the Y-spacers on sides of Y-axis-rear

Take the Y-carriage, four LM8UU and 8 zipties

Put the LM8UU bearings on the carriage and secure them with zipties

(optional) if your wooden table is made from soft plywood, insert additionally y-axis-table-spacer between each bearing and the carriage

1x M3x25 screw

2x M3 washer

1x GT2-16 idler pulley without teeths, bore 3mm

1x M3 self-locking nut

To tighten the idler, use small pliers to hold nut

Tighten gently!

Take the 17HS4401 stepper motor, make sure the connector is facing down

Using 3x M3x10 screws screw the motor

Do not tighten the screws yet

Take the side supports and insert them on rods from y-axis-rear

Using 4x M8 washers and 4x M8 nuts tighten the side supports on both sides

First tighten the right side support against the nuts holding y-motor-holder, then tighten the nuts on left side.

Make sure you use use correct side supports - the left one is with more holes

Connect the wire for Y axis stepper motor and guide as shown on photos

Take the y-belt-holder, 2x M3x18 screws , 2x M3 nuts and 4x M3 washers

Screw them as shown on photos (on the same side as the bearings)

Take the 400mm linear rods and insert them as shown on photo

Put 2 washers on both screws between head of the screw and the plastic part - otherwise you will be unable to mount the MK42 clone heatbed properly.

Put the y-carriage with rods into already build construction

Make sure that the y-belt-holder orientation is as shown on image

Tighten the smooth rods with ziptie on every corner

Take the GT2-16 pulley and put it on motor shaft as shown on image

Tighten the pulley, making sure that one of pulley screws are on flat part of motor shaft

Unscrew two M3 screws holding the motor

Start guiding the belt from y-belt-holder to the front

Guide the belt thru y-idler

Guide the belt thru pulley on stepper motor and then back to y-belt-holder

Screw back the two screws at y-motor-holder, tensioning the belt

If you have to use a true strength to move stepper motor back, then loose the belt from one side on y-belt-holder, otherwise you can damage something

Tighten all of the M8 nuts on front

Make sure, while tightening y-idler that its in line with the belt and the y-belt-holder

Contratulations! You just have assembled the y-axis, probably the one with most steps

You can take your favourite drink from the fridge as you have done a good work.

If you are ready to go you can start assembling X-axis