19. Setup und Calibration

(1) Computer

(2) PSU cable

(3) USB cable

(4) Zip Ties

(5) Silicone Sock (only required if the E3D Hotend is installed)

(6) Foil Squeegee with Alcantara Cover (only required for BuildTak)

(7) Isopropanol

(1) 2.0x75mm Hexagonal Screwdriver

(2) 2.5x75mm Hexagonal Screwdriver

(3) 7x125mm T-Handle Socket Wrench

(4) Torque Wrench 1,5Nm (only required if a vanadium nozzle is installed)

Alternatively, a 6mm Cross-Handle Socket Wrench can be used.

(5) Pliers Wrench (only required for E3D Hotend)

Alternatively, you can use a...

(6) 16mm Open-End Wrench

(1) Einsy Box Cover

(2) 4x Rod Holder Cover

Printing Surface

(3) Thekkiinngg Powder-Coated Spring Sheet V4

or

(4) BuildTak PEI Sheet

and

(5) BuildTak Flexible Steel Sheet

(1) 8x M3x10mm Hexagon Socket Head Cap Screws

(2) 5x M3x14mm Hexagon Socket Head Cap Screws

Visit Caribou3d.com to select the matching firmware for your printer model:

In the file manager, first select the folder "01_LatestVersion x.x.x".

Now, select your printer model and download the appropriate firmware. In our example we select a German firmware for a Caribou 220 MK3S with a Bondtech Mosquito and an SL Thermistor.

Printer height

Printer model

Extruder

Hotend

Finally, you have to choose a language ("EN" or "MULTI") and a thermistor version ("BM" or "BMH").

Download the program "Prusa Slicer" to your computer and install it on your PC / laptop.

Connect the power cable to the printer and turn it on.

The display should show the words "Caribou Research and Development" and the two fans should be activated.

Connect your printer to your computer using the supplied USB cable.

Open Prusa Slicer.

Select the following buttons in the top bar:

Configuration

Flash Printer Firmware

For Serial Port select "3D Printer powered by RAMBo".

At Firmware image select the firmware you downloaded.

Lastly, select "Flash".

This process may take a few minutes.

In the first step, the firmware is written.

In the second step, it is verified.

Do not interrupt this process! Damage to the Einsy board may occur.

Once the firmware upgrade is complete, you can select your preferred language for multi-language firmware.

Turn the knob on the display to switch between entries and press once to select individual entries.

Press the lower button to restart your printer.

You will then be asked if you want to use the "Wizard". Select "no" here.

You will then be asked if you want to use the "Wizard".

Select "no" here.

A message to restart the wizard will be displayed.

After pressing the knurled knob again, the selection menu is displayed.

After pressing the knob again, you will see the start screen.

Press and hold the knurled knob for 2-3 seconds. The display should now show "Z: +0.2".

Turn the knurled know clockwise. This will cause the x-axis to move upwards.

Move the x-axis all the way up against the top mounts to make sure the x-axis is parallel to the bed.

This will produce a loud noise, which is normal.

Check whether both sides are touching the top mounts. If this is not the case, check to see why there is a blockage.

By turning the knob counterclockwise, you now move the axis down 3-4cm.

Press the knurled knob once to display the start screen.

Before proceeding, make sure the pinda is level with or slightly lower than the nozzle.

Press the knob again to go to the main menu.

There you select the following buttons:

Calibration

Autohome

The printer now moves each of the three axes to neutral position and then moves to the first reference point on the heatbed.

The start position is on the front left of the heatbed.

If the printer moves to a rear left position, you probably mounted the beltholder and the y-slide in the wrong direction and have to rotate it.

Press the knob again to go to the main selection.

There you select the following buttons:

Calibration

Selftest

Before proceeding, make sure the pinda is level with or slightly lower than the nozzle.

The firmware first verifies that both fans are spinning and connected properly.

After the first fan is checked and running, you will be asked whether the extruder fan (fan on the left side) is spinning. Check this and answer accordingly.

Now you are asked whether the part cooling fan (fan at the front) is spinning. Check this and answer accordingly.

If the test shows that the fan connections on the Einsy board have been reversed, switch off the printer and replace them. Then run the self-test again. If the test shows that the fan connections on the Einsy board have been reversed, switch off the printer and replace them. Then run the self-test again.

The firmware now checks whether the length of the three axes is correct.

First, the length of the x-axis and the y-axis is measured.

If an error message appears, check if there are cables sticking out from the sides of the extruder which are blocking the axis. For the y-axis, check the installation of the bearing holders and the installation of the belt holder or pulley.

If the SuperPINDA / PINDA does not activate properly, check the cables.

The start position is then calibrated.

The last part of the self-test is to check the heating of the heatbed and extruder.

If an error occurs here, check the wiring.

This completes the self-test successfully.

Select the following buttons in the main menu under Settings:

Temperature

Nozzle

Set the temperature to 250°C. Press the control knob twice to return to the start screen.

On the start screen you can monitor the temperature rise.

If you have installed a Mosquito Hotend, tighten the nozzle carefully with a t-handle socket wrench.

If you have installed a Mosquito Hotend with a Vanadium Nozzle, tighten the nozzle with a torque wrench.

If you have installed an E3D Hotend, hold the heater block with a 16mm open-end wrench and carefully tighten the nozzle with a t-handle socket wrench.

Make sure that the heating block is aligned straight.

Select the following buttons in the main selection under Settings:

Preheat

Cooldown

Wait until the temperature has dropped below 50°C.

If you have installed an E3D Hotend , you can insert the silicone sock.

Make sure that it is not sitting above the cables, but below them.

Move the x-axis all the way down and turn off the printer.

Turn the two spindles of the z-stepper motors simultaneously and evenly downward until the nozzle touches the bed.

Loosen the M3x16mm Flat Head-Head Socket Cap Screw that holds the pinda in place.

For illustration purposes, the zip tie in Fig. 3 is colored red.

Slide a zip tie beneath the PINDA and re-tighten the M3x16mm Flat Head-Head Socket Cap Screw.

The distance between the PINDA and the bed is now approximately 0.6mm. For a SuperPINDA, take a credit card or something similar. The distance should be about 1mm.

Turn the printer back on and realign the x-axis (see Step 11).

Press the knurled knob again to get to the main selection.

There, select the following buttons:

Calibration

Belt Test

Now the tension of the x- and y-belts is measured. The value should be between 225 and 250. A smaller value means higher tension.

If necessary, adjust the tension of the belts by loosening or tightening the set screw on the front belt holder and on the side of the middle screw on the x-Idler. After a readjustment, you must repeat the test.

You can check the current value of the belt tension as follows:

Press the knurled knob again to get to the main selection.

There, select the following buttons:

Support

Belt Status

Only the value of the last measurement is displayed. If an adjustment has been made, the belt test must be performed again.

Remove the sticker from the BuildTak steel sheet and clean the sheet with isopropanol.

Remove the protective foil from the MK52 PEI Sheet by approx. 2-3cm.

Stick the MK52 PEI on the BuildTak Sheet side without logo.

Align the MK52 PEI Sheet on the BuildTak steel sheet (see Figure 3).

Now use the foil squeegee (or a spatula with a microfiber cloth) to apply the MK52 PEI Sheet to the Flexible Steel Sheet.

Remove the protective film piece by piece and squeegee the MK52 PEI Sheet to the Flexible Steel Sheet.

Always work in the direction of the not yet adhered MK52 PEI Sheet or towards the outer edges of the sheet.

Be especially careful around the edges. Only squeegee outwards. Otherwise, there is a risk that you will lift the MK52 PEI Sheet.

If necessary, remove the protruding parts of the MK52 PEI Sheet carefully with e.g. a knife.

Finally, clean the surface with isopropanol.

Select the following buttons in the main selection:

Calibration

Calibration XYZ

Make sure that there is no printing sheet on the heating bed. If the printer asks you about this, select "No".

Be careful that the Nozzle does not scratch the heatbed while the printer is measuring the 4 dots in the heated bed.

After measuring, the x-axis is moved up slightly. Now place your printing sheet on the heatbed to continue with the calibration.

The printer then measures 9 points on the bed.

The position of the four calibration points is measured.

After measuring, the x-axis is moved up slightly. Now, place your printing sheet on the heatbed to proceed with the calibration.

Now, the height of nine points on the printing bed is measured.

As the last step, the result of the calibration is displayed.

If the bed is crooked or if there is a fault, check the installation of the heatbed and the carriage.

The details of the calibration can be viewed under the support menu.

Select the following buttons in the main selection:

Support

XYZ Cal. Details

The most important factor here is the skew (the smaller, the better). If the value is below 0.11°, the printer will not perform any adjustments.

Place the rodholder covers (top) on the rodholders (bottom).

Now, tighten them with 2x M3x10mm Hexagon Socket Head Cap Screws.

Be careful not to overtighten the screws or the nuts underneath the rodholders may fall out.

Select the following buttons in the main selection under Settings:

Preheat

PLA

On the start screen you can monitor the temperature rise.

Place the cover on the Einsy Box.

Make sure that no cables are trapped between the cover and the box.

Now, fasten the cover with 5x M3x14mm Hexagon Socket Head Cap Screws.

Insert wisdom here.