⬢Prepare following parts to build the YZ frame:

⬢Aluminum extrusions (4x)

⬢Aluminum frame (1x)

⬢M5x16r screw (16x)

You can tighten the M5x16r with included Allen key or with a Torque Wrench. Recommended torque is 4.5 N.m (40 lb-in).

⬢Take the LONGER aluminum extrusions and place them next to the frame.

Note: screws are inserted from the opposite side of the frame. If you need to manipulate with the frame, make sure the extrusions are on the correct side.

⬢Ensure you are using the correct holes, see the second picture. Use the M5 screws to connect extrusions to the frame. Tighten the screws with the Allen key just slightly!

⬢Now, tighten the screws fully, but ON A DIAGONAL, see the last picture. As soon as you finish the first, tighten the second pair. Then proceed to the second long extrusion.

⬢Take the SHORTER aluminum extrusions and place them next to the frame.

Note: screws are inserted from the opposite side of the frame. If you need to manipulate with the frame, make sure the extrusions are on the correct side.

⬢Ensure you are using the correct holes, see the second picture. Use the M5x16 screws to connect extrusions to the frame. Tighten the screws just slightly!

⬢Now, tighten the screws fully, but ON A DIAGONAL, see the last picture. As soon as you finish the first, tighten the second pair. Then proceed to the second short extrusion.

⬢Rotate the frame with longer extrusions towards you.

⬢Place the front plate on the extrusions and secure it with M5x16r screws, DON'T TIGHTEN them yet!

⬢Now, tighten the screws fully, but ON A DIAGONAL, see the second picture. As soon as you finish the first, tighten the second pair. Then proceed to the second long extrusion.

⬢For the following step please prepare:

⬢PSU holders M3nE (2x)

⬢Take the YZ frame and rotate it with the shorter extrusions towards you.

⬢Place the PSU holders in the extrusion, ensure it is the correct extrusion. See the picture.

The exact position of the PSU holders doesn't matter, we will adjust them later.

⬢Ensure the frame with shorter extrusions is rotated towards you.

⬢Place the rear plate on the extrusions and secure it with M5x16r screws, DON'T TIGHTEN them yet!

⬢Now, tighten the screws fully, but ON A DIAGONAL, see the second picture. As soon as you finish the first, tighten the second pair. Then proceed to the second short extrusion.

⬢All the components are cut or drilled by machine for highest precision, but with uneven tightening, it is possible to warp the frame.

⬢Using your hand, try to wiggle with the frame sides and check, whether some corners are lifting up or not.

⬢In case you find some imperfections, release the screws, press the extrusions against the FLAT SURFACE and tighten them again.

Note this step is optional for now. We recommend mounting the feet to protect the surface on your table (workbench). However, you need to lift the frame up before each turn.

There will be extra step at the end of the assembly to remind you of the antivibration feet.

⬢Antivibration feet (4x)

⬢Turn the YZ frame on the side and insert the antivibration foot inclined, then rotate the foot until you squish the rim inside the extrusion.

⬢Repeat this process on all 4 feet. Place them 2-3 cm from the end of each extrusion.

⬢For the following steps, please prepare:

⬢Y-holder-front (2x)

⬢Y-holder-back (2x)

⬢M3x10 screw (8x)

⬢M3nS nut (8x)

⬢Take the Y-holder-front and insert M3nS nuts.

⬢Make sure you've pressed the nuts all the way in.

In case you can't press the nuts in, don't use excessive force. First, check if there isn't any obstacle in the nut trap.

⬢Ensure and adjust the alignment of each nut with the 2mm Allen key.

⬢Repeat this step for the remaining Y-holders. At the end, you should have two pairs, front and back.

⬢First, take the Y-holder-front parts and place them on the longer extrusions, openings for screws must be facing up.

⬢Rotate the 3D printed parts towards the front plate.

⬢Secure each front holder with two M3x10 screws. Tighten both screws equally, but not completely. We will tighten them fully later on.

⬢Second, take the Y-holder-back parts and secure them with M3x10 screws on the rear plate (with shorter extrusions). Tighten both screws equally, but not completely. We will tighten them fully later on.

⬢Take the Y-belt-idler and insert two M3nN nyloc nuts from the top. The rubber inside nuts must be facing up.

⬢Turn the idler to the other side and insert the last M3nN nyloc nut. The rubber inside the nut must be facing towards you.

⬢Make sure all three nuts are all the way in.

In case you can't press the nuts in, don't use excessive force. Take M3 screw thread it from the opposite side of the printed part, as you tighten the screw, it will pull the nut in. Be careful not to break the idler during tightening.

⬢Insert the prepared bearing in the Y-belt-idler.

Bearing housing orientation doesn't matter.

⬢Secure the bearing with the M3x18 screw. Don't fully tighten the screw.

⬢Place your finger on the bearing and ensure it can rotate freely. If needed adjust the screw.

⬢Rotate the frame with longer extrusions towards you.

⬢Take the Y-belt-idler and place it on the front plate. Note there is a mark (circle) on the printed part facing up.

⬢Secure the Y-belt-idler with two M3x10 screws.

⬢For the following steps, please prepare:

⬢Y-axis motor (1x)

⬢Y-motor-holder (1x)

⬢M3x10 screw (4x)

⬢M3n nut (2x)

⬢Take the Y-motor-holder and insert two M3n nuts.

In case you can't press the nuts in, don't use excessive force. Use an M3 screw from the other side and tighten it.

⬢Place the Y-motor-holder on the motor, ensure the correct orientation as in the picture.

⬢Using two M3x10 screws tighten holder and motor together.

⬢Place the Y-carriage on a flat surface. Orientation doesn't matter.

⬢Insert linear bearing in the cutout and secure it by U-bolt.

⬢Hold thumb on the U-bolt and turn the carriage. Place nyloc nuts on both ends of the U-bolt.

⬢Start tightening the nuts, BUT ENSURE you are tightening both nuts equally and AS SOON AS EACH NUT REACHES THE SURFACE OF THE Y-CARRIAGE STOP TIGHTENING!!! We will finish tightening the nuts in the next step.

⬢Repeat these steps for the remaining two linear bearings.

Over tightening nuts leads to deformation of the bearing and all the issues connected with it. Please follow the instructions.

⬢Check if the bearing is centered in both directions, if not slightly release the nuts and adjust its position. Then retighten the nuts to the previous state.

⬢When you are ready, using pliers rotate each nut, but only 90°. This is enough to fix the bearing without deforming it.

⬢Repeat these steps for remaining two linear bearings.

⬢Take all the smooth rods and compare their lengths. For Y-carriage you need mid-sized rods (330 mm).

⬢If you can't slide the smooth rod easily, check the two bearings are aligned properly.

In case you manage to push out balls from the bearings, please count them. One or two balls are ok, if there are more of them, please consider ordering new bearings.

⬢Take the Y-carriage including smooth rods and place them in YZ-frame. Make sure, that two bearings are on the left side (see the picture).

⬢Using your thumb, press the smooth rods inside all four holders. Don't use excessive force.

⬢Find the package with zip ties and take out 4 pieces.

⬢Slide the zip tie through the holder, there is a slot.

⬢Connect the zip tie and tighten it. The "head" should be inside the frame.

⬢Using pliers cut the remaining part.

⬢Repeat this step in all four corners.

⬢Ensure all M3x10 screws on Y-holders are released, so the printed parts are able to move.

⬢Move the Y-carriage back and forth across the entire length of the smooth rods to align them.

⬢Then move the carriage to the front plate and tighten all screws in the front-Y-holders.

⬢Move the Y-carriage to the rear plate and tighten all screws in the back-Y-holders.

⬢There is a flat part on the motor shaft, rotate it similarly to the first picture.

⬢Place a GT2-16 pulley on the Y-motor shaft as shown in the picture.

⬢Don't press the pulley against the motor. Leave a gap so the pulley can rotate freely.

⬢One of the screws must be facing directly against the pad (flat part) on the shaft. Slightly tighten the first screw.

⬢Turn the shaft and slightly tighten the second screw.

Don't tighten the pulley firmly yet, we'll get to that later.

⬢Turn the frame on its "right" side, as shown in the picture. You need access to belt holder, idler and pulley.

Use the bottom opening in the extrusion and gently insert the cable from Y-motor.

⬢Find the belt for Y-axis (Y-GT2 650 mm) and insert one end in the Y-belt-holder. Ensure you are using the upper slot (closer to Y-carriage).

Make sure you won't accidentally use the belt for X-axis (X-GT2), which is longer.

⬢Press the belt all the way in, use Allen key.

⬢Insert the belt through the idler as shown in the picture.

⬢Guide the belt behind Y-axis motor and ensure following:

⬢Turn the printer on its "feet" and guide the belt around Y-motor.

⬢Turn the printer back on the side. Hold the Y-carriage by hand (prevent its movement) as we need to pull the belt.

⬢Ensure the idler isn't tightened completely to the front plate. Otherwise, you won't be able to adjust the tension later.

⬢Take the end of the belt, pull the belt with a reasonable force and insert it in the Y-belt-holder. Note you don't have to use the whole length of the slot.

⬢Press the belt all the way in, use Allen key.

The belt should be stretched and not easily bent. However, the final tension will be adjusted later.

⬢Make sure the belt is placed in the "axis" of the printer. Both top and bottom part of the belt should be parallel (above each other).

⬢To adjust the belt position, release screws on the pulley and slightly move with it, until you reach the best position.

⬢In case you can't make the belt parallel, check if the belt is properly inserted in the Y-belt-holder (below Y-carriage).

⬢Tighten both screws on the pulley.