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. (How to check?)
Step 1 - Tool Preparation
1｜Torx screwdriver
2｜Double-sided tape
3｜Double-head wrench
4｜Pliers
Step 2 - Disassemble the Shield of the Laser Head
Lower the bed to the bottom and use the Torx screwdriver to unscrew these two screws on the laser head assembly.
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 and the lens holder inside the nozzle.
Please keep them secure and leave the cables and hose connected.
Step 4 - Put the Shield and Nozzle aside
Put the shield with cables and the nozzle with the hose above or behind the plastic chain in case the laser beam hits it while making pulses.
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, it indicates 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 Maintain >> 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 the next step.
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 cannot be adjusted. 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 Focus Lens and the Nozzle
Please refer to the photo below to put the lens and lens holder in the correct order.
Choose the correct order of your lens:
The left one is for a 1.5" lens add-on, and the right one is for the default HEXA lens.
(The curved side of the lens will be facing up)
After putting in the lens and the holder, tighten the ring by turning the ring counterclockwise.
Step 10 - Re-install the Shield
Screw these two screws back.
Step 11 - 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 Step 9 of the standard OPA process.
You can find the link to the standard OPA process here: 4-8 Optical Path Alignment.
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