02. Assembly of the y-Axis

(1) 1.5mmx60mm Hexagonal Micro Screwdriver for Electronic Applications

(2) 2.5x75mm Hexagonal Screwdriver

(3) 5.0x100mm Hexagon Ballpoint Screwdriver

(4) Engineer Scriber

(1) Stepper Motor

(2) GT3 Toothed Pulley

(3) 4x y-Rodholder Bottom

(4) y-Motorholder

(5) y-Belt Tensioner

(1) 4x Black M3 Washers

(2) 8x M3 Self-Securing Nuts

(3) 4x M3x10mm Hexagon Socket Head Cap Screws

(4) 12x M6x12mm Hexagon Socket Head Cap Screws

Using an Engineer Scriber, insert 2x M3 Self-Securing Nuts into each of the y-bar holders.

Alternatively, you can tighten the M3 Self-Securing Nuts with an M3 Screw from the other side.

Align the T-Nuts and the frame as shown in figure 1.

Now, place the four y-rodholders on the frame (see figure 3), assigning each hole to a T-Nut.

For the x-axes, make sure that there are 2x T-Nuts between the two y-rodholders.

The y-rodholders are now screwed on using 8x M6x12mm Hexagon Socket Head Cap Screws.

These screws are initially only loosely tightened, as the y-rodholders need to remain movable.

Place the y-motorholder on to the stepper motor.

Make sure the cables are leading to the holes for the M6 screws.

Then, attach the motor to the y-motorholder. Use the 4x M3 Washers and the 4x M3x10mm Hexagon Socket Head Cap Screws to fasten it.

Slide the GT3 pulley onto the motor shaft of the stepper motor.

The GT3 pulley has two grub screws. Ensure that one of these screws is aligned with the flat surface of the shaft. Then, tighten both grub screws.

To avoid friction, leave a small gap between the pulley and the motor surface.

Attach the assembled y-motorholders to the 2x T-Nuts between the two y-rodholders in the rear x-axis. Use 2x M6x12mm Hexagon Socket Head Cap Screws for this.

Place the y-belt tensioner on 2x T-Nuts in the front x-axis and fasten it loosely with 2x M6x12mm Hexagon Socket Head Cap Screws.

Both the y-motorholder and the y-belt tensioner must be easily movable on the corresponding x-axes.

The setup of the y-axis is now complete.

If you are building a printer with MK52 blocks, continue with the manual 03.1. Assembly and Installation of the Heatbed Carriage for MK52-Blocks.

If you are building a printer with MK52 carriage, continue with the manual 03.2. Assembly and Installation of the Heatbed Carriage (for MK52)