4-11 Advanced Optical Path Adjustment – FLUX Help Center

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Description:
If your vertical dots can't be found or they are way too small on the nozzle tip tape, it indicates that your vertical path (Z-axis) is off too much, and it will be hard to adjust with the focus lens on.
Therefore, this article will show you how to check and adjust the vertical path without the focus lens.

Before you start:
Please make sure your 1st to 2nd mirror path and the 2nd to 3rd mirror path are well aligned. Otherwise, the steps on this page will make your optical path worse.

Please refer to this article, 4-10 Optical Path Adjustment, from Step 1 to Step 11 to ensure the mentioned paths are well aligned.

Step 1 - Tool Preparation:

1｜Double-sided tape
2｜Double-head wrench
3｜Pliers

Step 2 - Lower the Bed:
Lower the bed to the bottom by pressing the lowering button on the panel or turning the knob counterclockwise manually.

Panel	Knob

Step 3 - Disassemble the Nozzle and the Focus Lens:
The ring has to go clockwise in order to be loosened.

After loosening the ring, the nozzle can be detached from the laser head assembly.
There will be the focus lens, the nozzle, the ring, and the lens block. Please keep them secure and keep the air hose connected.

Step 4 - Ensure the Air hose Won't be Lasered
Check if your air hose is in the path of the laser. Simply ensure the air hose is not in front of the 3rd mirror entrance.

Good Position	Bad Position

Step 5 - Reset the Vertical Path (Z-axis) from the 3rd Mirror:
Use the double-head wrench and the pliers to loosen the 3 nuts on the 3rd mirror.

Rotate these three screws counter-clockwise until there is no gap between the mirror holder and the seat or loosen the screws completely but do not take them out.

When there is no gap between them, the vertical path has been reset.

Step 6 - Putting Tape and Making Pulses:
Place a piece of one-layer double-sided tape underneath the laser head and press it against the entrance in order to form a pressed mark.

Move the laser head to the center of the bed and make 3 pulses.
(Go to Control >> Press "Motor" >> Move the head manually >> Close the lid >> Make 3 pulses)

Step 7 - Determine the Position of the Vertical Dot:
Remove the tape and determine the position of the dot.
There will only be three possible positions: center, left, and right.

1. Center position:

If your dot is at the center as in the photo above, it indicates your vertical path is good, and you can move to Step 8.

2. Left position:

If your dot is at the left as in the photo above, it indicates your vertical path needs adjustment.

How to adjust:
Please rotate each screw clockwise to raise the holder to form a gap in between, and your dot should move to the right.

The gap:

After rotating the screws, apply another tape and check the new position of your dot again until the dot is at the center and you can move to Step 8.

3. Right position:

If your dot is at the right as in the photo above, it indicates your laser tube's output angle is too low and it is not possible to adjust, please stop here and contact your local reseller for further assistance.

Step 8 - Tighten All the Nuts on the 3rd Mirror:

After the adjustment, tighten all the nuts in order to fix the position.

Step 9 - Re-install the Nozzle:

Install the lens block into the ring. The red side has to be facing down.
Install the focus lens. The curved side has to be facing up.
(A tip to quickly determine the curved side is that it should reflect your whole face when you look at it.)
Rotate the ring counterclockwise to tighten it up.

Step 10 - Go Back to the Standard OPA Process:

Please be aware that this instruction does not signify the completion of your OPA.
To continue with the OPA process, please return to the standard OPA process.
Optical Path Adjustment

#END

Step 8 - Tighten All the Nuts on the 3rd Mirror:

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