4.1 Laser Engraving and Cutting Workflows
Snapmaker provides you with the following two methods to help you position the laser working area:
- Use Camera Capture
- Set Work Origin
If you use the method of camera capture, you must connect your machine to Luban, and use Luban for the subsequent operations. If you set the work origin, you can start laser engraving and cutting by using Luban or the Touchscreen. Depending on the positioning methods and operating consoles you choose, the workflows can be different. This section provides the three workflows you can follow to start laser engraving and cutting.
The engraving and cutting effects depend on the material you choose and the parameters you configure, regardless of which workflow you opt for.
Use Camera Capture to Start Laser Engraving and Cutting in Luban
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Prepare the Material to Engrave or Cut
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Prepare the G-Code File for Engraving and Cutting
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Set Work Origin to Start Laser Engraving and Cutting on the Touchscreen
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Prepare the Material to Engrave or Cut
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Prepare the G-Code File for Engraving and Cutting
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Transfer the G-code File to the Machine
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Set Work Origin to Start Laser Engraving and Cutting in Luban
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Prepare the Material to Engrave or Cut
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Prepare the G-Code File for Engraving and Cutting
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4.2 Measure the Focal Length
4.2.1 How It Works: Measure the Focal Length
Focal length is the distance from the center of the lens to the focal point of the lens. By setting an accurate focal length value, you will be able to position the focal point right on the surface of the material, which ensures the best focusing result.
Snapmaker designs both the Auto Focus and Manual Focus modes to help you measure the focal length. The measurement of focal length mainly involves the following procedures.
(1) Engrave a few lines at different heights.
Each laser engraving and cutting machine comes with a default focal length value, which is not always accurate. During auto focusing, the machine adjusts the height of the Laser Module based on the default focal length to engrave a series of lines on the material.
The manual focusing procedure does not necessarily use the default value for focal length. Instead, you can manually set a reference point. Then, the machine adjusts the height of the Laser Module based on the reference point to engrave a series of lines on the material.
(2) Identify the best engraved line.
At the optimal height, the laser is best focused and can engrave the thinnest line on the material surface, which is called the best engraved line. The lines engraved before or after the best engraved line should be thicker than it, as illustrated by the following figure.
(Line A is the best engraved line. Lines engraved before or after it are thicker.)
However, sometimes the engraving result does not contain the best engraved line. For example, Line B is the thinnest line in the following picture, but it is not the best engraved line. This is because the Laser Module did not reach the optimal height during the focusing procedure. In this case, the focusing procedure will fail. For more information about how to deal with failed focusing, see 7.1 Auto Focus Fails.
(3) Calculate and record the focal length.
After the best engraved line is identified, automatically or manually, the machine will register the corresponding laser height and calculate the focal length, which will be saved for subsequent use.
As long as you do not reassemble the Laser Module and the machine works normally, the recorded focal length can be used for the next engraving and cutting job. For the next engraving and cutting job in Auto Mode (see 4.9 Start Engraving and Cutting), you only need to set the material thickness, and then the machine will automatically adjust itself to ensure that the focal point always falls on the material surface.
To switch the focusing mode, tap Settings > Laser > Auto Focus on the Touchscreen.
4.2.2 Automatically Measure the Focal Length
Preparation:
Laser Material × 1
Silicone Plugs × 4
Laser Safety Goggles × 1
(1) Place the provided material on the Laser Engraving and Cutting Platform. Secure it with the silicone plugs.
(2) On the Touchscreen, swipe left to tap Calibration.
(3) Read the homing instruction on the Touchscreen. Tap Going Home, and the Laser Module will automatically jog to the starting position of X, Y, and Z axes.
If you have completed homing previously, the machine will skip this step.
(4) Slide the scale to set the thickness of the material (1.5 mm) and tap Next.
(5) Put the Calibration Card provided or a piece of A4 paper in between the Laser Module and the material. Tap X-, X+, Y-, Y+ to move the Laser Module above the Calibration Card. Keep adjusting the Z Offset until you feel slight resistance when you pull out the Calibration Card, and it should be wrinkled when you push it forward. Then, pull out the Calibration Card and tap Next.
(6) Put on the Laser Safety Goggles and tap Next.
(7) Tap Set Work Origin, and then tap Run Boundary. As the Laser Module moves, the laser dot will be traveling along the path of a small rectangle on the material surface, which represents the area to be engraved. Ensure this work area on the material is blank. If not, tap X-, X+, Y-, or Y+ to reset the work origin and run boundary again. After setting the work area, tap Next.
(8) Read the Auto Focus instruction on the Touchscreen. Tap Start, and the machine will keep adjusting the height of the Laser Module to engrave a series of lines on the material. Then, the built-in camera will identify the best engraved line.
(9) After Auto Focus is completed, tap Complete to go back to the APP List Screen.
If the screen displays Failed, tap Failed and slide the scale to choose the line corresponding to the thinnest engraved line manually. Then you may need to redo Auto Focus. For more information about the possible causes and solutions to failed auto focus, see 7.1 Auto Focus Fails.
4.2.3 Manually Measure the Focal Length
Preparation:
Laser Material × 1
Silicone Plugs × 4
Laser Safety Goggles × 1
(1) Place the provided material on the Laser Engraving and Cutting Platform. Secure it with the silicone plugs.
(2) On the Touchscreen, swipe left to tap Calibration.
(3) Read the homing instruction on the Touchscreen. Tap Going Home, and the Laser Module will automatically jog to the starting position of X, Y, and Z axes.
If you have completed homing previously, the machine will skip this step.
(4) Slide the scale to set the thickness of the material (1.5 mm) and tap Next.
(5) Put the Calibration Card provided or a piece of A4 paper in between the Laser Module and the material. Tap X-, X+, Y-, Y+ to move the Laser Module above the Calibration Card. Keep adjusting the Z Offset until you feel slight resistance when you pull out the Calibration Card, and it should be wrinkled when you push it forward. Then, pull out the Calibration Card and tap Next.
(6) Put on the Laser Safety Goggles and tap Next.
(7) Set Reference Points. Tap X-, X+, Y-, Y+, Z-, or Z+ to move the Laser Module. After the laser beam is focused into the smallest spot possible, tap Next.
(8) Tap Set Work Origin, and then tap Run Boundary. As the Laser Module moves, the laser dot will be travelling along the path of a small rectangle on the material surface, which represents the area to be engraved. Check if this work area is a blank surface on the material. If not, tap X-, X+, Y-, or Y+ to reset the work origin and run boundary again. After setting the work area, tap Next.
(9) Read the Manual Focus instruction on the Touchscreen. Tap Start, and the machine will keep adjusting the height of the Laser Module to engrave a series of lines on the material.
(10) After the engraving process is completed, check the engraving result and find the best engraved line.
For more information about how to identify the best engraved line, see 4.2.1 How It Works: Measure the Focal Length. If the best engraved line does not exist, see 7.1 Auto Focus Fails.
(11) On the Touchscreen, slide the scale to choose the line corresponding to the best engraved line, and tap Save to save the focal length and exit the manual focus procedure.
4.3 Calibrate the Camera
You can use the built-in camera to capture images of the work area, and then put the images together as the background of your editing area in Luban. This way, you can easily position the pattern you want to engrave or cut on the material.
To use the camera capture feature for engraving and cutting, you must first calibrate the camera. This section describes how to use automatic calibration to calibrate the camera and how to manually adjust the calibration result to obtain the best camera capture images.
4.3.1 Automatically Calibrate the Camera
Preparation:
Blank white paper (no less than 150 mm × 150 mm) × 1
Silicone Plugs × 4
Laser Safety Goggles × 1
(1) Place the blank white paper on the center of the Laser Engraving and Cutting Platform. Secure it with the silicone plugs.
(2) On the Touchscreen, swipe left and tap Settings > Laser to enter Laser Settings.
(3) On the Laser Settings screen, tap Camera Calibration.
Ensure that Camera Light is toggled on. This way, the machine will turn on the camera light automatically during Auto Focus and Camera Calibration. Camera light provides a brighter working environment for the camera and ensures better calibration results.
(4) Read the camera calibration instruction on the Touchscreen. Put on the Laser Safety Goggles and tap Start. The machine will cut a square on the paper to calibrate the camera.
(5) Wait about 1 minute for the machine to process the photo. When the processing progress is 4/4, tap Complete.
4.3.2 Manually Adjust the Calibration Result
Prerequisites:
Automatic camera calibration is completed.
The machine is connected to Luban (see 4.5 Connect the Machine to Luban).
(1) In Luban, enter the edit and process space for laser. Then, click Camera Capture 
to add background.
(2) On the Camera Capture dialog box, click Start. Wait about 1 minute for the machine to take photos and stitch them into a panorama of the platform.
(3) Examine the captured image.
- If the edges of the captured image are aligned, click Confirm and skip the following steps.
- If the edges of the captured image are not aligned, click Calibration and continue the following steps.
(4) The image of the paper with an engraved square and a quadrilateral are displayed on the Calibration dialog box. Zoom in on the image and drag the lines of the quadrilateral until they perfectly match the square.
(5) Click Apply to see the finished image. You can repeat Step (5) and Step (6) if the edges of the captured image are still not aligned.
(6) After you finish calibration, click Confirm and the finished image will be loaded into the canvas in the coordinate system.
4.4 Prepare the Material
4.4.1 Choose the Material
Choosing an appropriate material is key to your personal safety and can render a better laser engraving and cutting effect. Pay attention to the following points so as to choose the proper material to engrave or cut:
- Choose a material that is listed in the Material Library. Materials listed in Material Library are tested by Snapmaker, and are safe for your use. If you want to use materials that are not included, ensure that you are familiar with the material properties and that the material can be used for engraving and cutting. If you want to engrave or cut a material whose properties you are unsure of, you can contact us at support@snapmaker.com.
- Choose a material that has a proper size. Ensure that the material you choose does not exceed the size of the Laser Engraving and Cutting Platform.
- Choose a material that has an even engraving and cutting area. If the engraving and cutting area is not flat, the laser beam will be out of focus.
4.4.2 Measure the Thickness of the Material
If you use the Auto Mode for engraving and cutting (see 4.9 Start Engraving and Cutting), you must know the thickness of material to be engraved or cut. With an accurate thickness, the laser can best focus on the material surface and produce the best engraving and cutting result.
The thickness of the provided laser material is 1.5 mm. If you use other materials for engraving and cutting, we recommend that you use a vernier caliper to measure their thickness.
4.4.3 Fasten the Material
You must fasten the material before engraving and cutting for the following two purposes:
- To prevent position changing.
The laser engraving and cutting machine works on designated paths. If the position of the material changes, the engraving and cutting effect will be compromised.
- To ensure consistent focusing.
The laser engraving and cutting machine works with a fixed focal length. If the material surface is not flat, the engraving and cutting effect will be compromised.
You can fasten the material with the provided silicon plugs or other tools.
- Use Provided Silicone Plugs
Place the material on the Laser Engraving and Cutting Platform. Fasten it with at least four silicone plugs as illustrated.
- Use Office Products
Office products such as tapes and binder clips can be useful.
- Use DIY Fasteners
Make good use of the 3D printer to DIY your own fasteners. The following picture shows a 3D printed widget specially designed to secure laser engraving and cutting materials.
Pay attention to the following points when you fasten the material so as to protect your safety and ensure machining success:
- Ensure that the area to engrave or cut remains level.
Be creative, especially when engraving or cutting an irregular-shaped material. The following picture shows you an example of how to secure a triangular piece of wood.
- Ensure that the fastening tools will not collide with any portions of the machine.
- Ensure that the fastening tools remain out of the engraving and cutting paths.
4.5 Connect the Machine to Luban
Luban is a free slicing software designed by Snapmaker. You can use Luban to edit and process the files for engraving and cutting. You can also connect your machine to Luban via Wi-Fi or USB cable and operate the machine using Luban. This section describes how to connect the machine to Luban.
4.5.1 Connect via Wi-Fi
(1) Connect the machine and your computer to the same Wi-Fi network.
(2) In Luban, click Workspace. On the Connection panel, click Wi-Fi > Refresh 
> Select your machine from the drop-down list > Connect.
(3) Tap Yes on the Touchscreen of the machine.
After the machine is connected to Luban via Wi-Fi, you cannot operate it on the Touchscreen. You can find actions such as Set Work Origin and Laser Speed adjustment in Luban.
If the machine is disconnected from Luban, ongoing engraving and cutting jobs will not stop on the machine. You must tap Confirm on the Touchscreen to stop machine operations.
If the machine becomes disconnected with Luban when the Laser Power is turned on, the laser will not automatically turn off. You must go to Control > Laser Power > Laser Status to manually turn it off.
4.5.2 Connect via USB Cable
(1) Insert one end of the provided USB cable into the computer, and the other end into the Controller of the laser engraving and cutting machine.
(2) In Luban, click Workspace. On the Connection panel, click Serial Port > Refresh > Select your machine from the drop-down list > Connect.
If you cannot find the port, unplug the USB cable and try again. You may need to download and install the driver from snapmaker.com/product/snapmaker-2/downloads.
Keep the cable connected until the laser engraving and cutting job completes.
If the machine becomes disconnected with Luban when the Laser Power is already turned on, the laser will not automatically turn off. You must go to Control > Laser Power > Laser Status to manually turn it off.
4.6 Prepare the G-code File
G-code is the most widely used computer numerical control (CNC) programming language. It is used mainly in computer-aided manufacturing to control automated machine tools.
G-code instructions are provided to a machine controller that tells the motors where to move, how fast to move, and what paths to follow.
A G-code file contains a series of G-code instructions. To operate the machine for engraving and cutting, you must first prepare a G-code file. This section describes how to prepare a G-code file.
(1) Open Luban on your computer.
(2) Connect Luban with your machine. Then, use Camera Capture to take photos of the work area and generate a background for your image.
(Skip this step if you use work origin to determine the position of your engraving and cutting image.)
(3) Load cases or add images, text, or patterns to the canvas for editing.
- You can choose a case from the case library of Luban and load it to the canvas.
- You can also click
and choose an image from your computer. The add files icon is on the left of the canvas.
Luban supports the following image formats: .svg, .png, .jpg, .jpeg, .bmp, .dxf, and more formats are to be added.
- You can also add text, rectangles, or ellipses. The tool bar is on the left of the canvas.
When adding text, you can type in any characters and set the font and the font size.
(4) Adjust the positions, sizes, and rotation angles of the images, patterns or text.
(5) Click to choose an image, and select and configure a Processing Mode (see 4.7 Four Modes to Process the File) for the image. Repeat this step to configure processing modes for the other images. When multiple images overlap, you can right click on the images to Bring to Frontand Send to Back to select the image you want.
You can configure the same or different processing modes for different images.
(6) Switch Edit to Process. Click to choose an image, a pattern, or text, and click Create Toolpath. Configure parameters about the toolpaths of the laser engraving and cutting machine. Repeat this step to create and configure toolpaths for the other images, patterns, or text. Then, you can Prioritize 
or Deprioritize 
each toolpath to determine the engraving and cutting sequence.
You can configure the same or different toolpaths for different images, patterns, or text. You can also configure multiple toolpaths for one image, pattern, or text. If a toolpath for engraving overlap with a toolpath for cutting, we recommend that you prioritize the toolpath for engraving to avoid undermining engraving quality in case the materials become less stable after being cut.
If you do not create a toolpath for an image, a pattern, or text, then they will not be engraved or cut.
(7) Preview the toolpaths and generate a G-code file.
The G-code file can be loaded to Workspace or exported to your computer.
4.7 Four Modes to Process the File
Snapmaker provides you with four modes to process the image, all of which can be used in laser engraving. But you can use only the Vector mode for laser cutting.
B & W
It will render the engraved material black and white without any grey.
Greyscale
It will render the engraved material in different shades of grey depending on the original color of the image.
Vector
It can be used for engraving vector images. The engraved results will be in black and white without any grey.
The Vector mode can also be used for laser cutting. For laser cutting, you can adjust Work Speed, Multi-pass and Power based on the materials you use.
Halftone
It creates a gradient-like effect on your material.
4.8 Transfer the G-code File
If you want to operate laser engraving and cutting on the Touchscreen, you must transfer the G-code file to the machine. This section describes how to transfer the G-code file to the machine for laser engraving and cutting.
4.8.1 Transfer via Wi-Fi
(1) Connect the machine to Luban (see 4.5 Connect the Machine to Luban).
(2) In the edit and process space for laser in Luban, click Load G-code to Workspace. In the workspace of Luban, click Send to Device via Wi-Fi.
(3) On the Touchscreen, tap Got It to receive the G-code file.
(4) On the Touchscreen, find the G-code file by tapping Files > Local.
4.8.2 Transfer via USB Flash Drive
(1) In the edit and process space for laser in Luban, click Export G-code to File (in .nc format) and save the exported file to the USB flash drive.
(2) Insert the USB flash drive into the Controller of the laser engraving and cutting machine.
(3) On the Touchscreen, find the G-code file by tapping Files > USB.
4.9 Start Engraving and Cutting
After the machine, material, and G-code file are ready, you can start engraving and cutting. The operating console can be Luban or the Touchscreen. Set Work Origin is a crucial step to start engraving and cutting. This section explains work origin and describes how to start engraving and cutting in Luban or on the Touchscreen.
4.9.1 How It Works: Work Origin
The work origin corresponds to the (0, 0) coordinate origin in Luban. By setting the work origin and running boundary, you can find out where the engraving and cutting will take place.
If you use the camera capture feature to determine the engraving and cutting position, you do not need to set the work origin.
4.9.2 Start Engraving and Cutting on the Touchscreen
(1) On the Touchscreen, tap Start.
(2) Choose the G-code file you prepare from Local or USB.
(3) On the Preview screen, you can preview the image for engraving and cutting. Laser Power, Work Speed, and Estimated Time are also displayed on the screen. You can tap Adjust Settings to modify Laser Power and Work Speed. Check if the image is right and the laser power and the work speed are proper, and then tap Ready.
(4) In the Select Mode screen, tap Auto Mode.
You can also opt for Manual Mode. However, we recommend auto mode as it is easier to follow. To know more about the differences between the two modes as well as how to navigate the manual mode, see 4.10 Auto Mode and Manual Mode for Laser Engraving and Cutting.
(5) Set Material Thickness. Set the thickness of the material you want to engrave or cut, and then tap Next.
Set an accurate material thickness. Otherwise, the Lens Hood may collide with the material.
(6) Put on the Laser Safety Goggles and tap Next.
(7) Tap X-, X+, Y-, or Y+ to move the laser dot to where the work origin will be, and then tap Set Work Origin. Next, tap Run Boundary to check if the work origin is proper. If not, reset the work origin and run boundary again. After you set a proper work origin, tap Start.
(8) Laser engraving and cutting starts.
You can swipe left to modify Laser Power and Work Speed.
4.9.3 Start Engraving and Cutting in Luban
(1) Connect your machine to Luban.
(2) Load G-code to Workspace.
- If you generate G-code in Luban, click Load G-code to Workspace to load the generated G-code to Workspace.
- If you want to use a G-code file stored in your computer, click Open G-code. Select a G-code file (NC file) from your computer and click Open.
(3) Select Auto Mode.
You can also opt for Manual Mode. However, we recommend auto mode as it is easier to follow. To know more about the differences between the two modes as well as how to navigate the manual mode, see 4.2.9 Auto Mode and Manual Mode for Laser Engraving and Cutting.
(4) Set Material Thickness. Enter the thickness (in millimeters) of the material you want to engrave or cut.
Set an accurate material thickness. Otherwise, the Lens Hood may collide with the material.
(5) Put on the Laser Safety Goggles and turn on Laser Power.
(6) Click X-, X+, Y-, or Y+ to move the laser dot to where the work origin will be, and then click Set Work Origin. Next, click Run Boundary to check if the work origin is proper. If not, reset the work origin and run boundary again. Repeat this step until you set a proper work origin.
(If you use the camera capture method to determine the position of the image, skip this step to continue the following operations.)
(7) You can also modify Laser Power and Work Speed in Luban.
(8) On the top-left corner of the Workspace, click the Run 
button to start engraving and cutting.
4.10 Auto Mode and Manual Mode for Laser Engraving and Cutting
4.10.1 Differences between Auto Mode and Manual Mode
In auto mode, the machine automatically adjusts the height of the Laser Module based on the measured focal length and the input material thickness, so as to ensure the best focusing result. In manual mode, you must manually adjust the height of the Laser Module to make the laser beam best focus on the material surface. Therefore, manual mode differs from auto mode in the following aspects:
- Manual mode does not involve the Auto Focus or Manual Focus procedure to measure the focal length.
- Materials with unknown thickness can be engraved and cut.
- The height of the Laser Module can be adjusted. The height of the Laser Module is not automatically calculated by the machine. Thus, if you find the engraving and cutting effect unsatisfying, you can stop the job and choose Manual Mode again to modify the height of the Laser Module.
4.10.2 How to use Manual Mode
When using manual mode, you do not need to measure the focal length or measure the thickness of the material. After the machine, material, and G-code file are ready, you can use Manual Mode to start engraving and cutting. The operating console can be Luban or the Touchscreen.
- Use Manual Mode on the Touchscreen
(1) On the Touchscreen, tap Start.
(2) Choose the G-code file you have prepared from Local or USB.
(3) On the Preview screen, you can preview the image for engraving and cutting. Laser Power, Work Speed, and Estimated Time are also displayed on the screen. You can tap Adjust Settings to modify Laser Power and Work Speed. Check if the image is right and the laser power and the work speed are proper, and then tap Ready.
(4) On the Select Mode screen, select Manual Mode.
(5) Put on Laser Safety Goggles and tap Next.
(6) Tap X-, X+, Y-, or Y+ to move the laser dot above the material. Then, tap Z- or Z+ to adjust the height of the Laser Module until the laser beam is focused down to the smallest spot.
The smallest laser spot means the best focusing result. To reach the best focusing result, first lower the Laser Module until the Lens Hood has slightly touched the surface of the material. Then, gradually move the Laser Module up. The laser spot will first become smaller before becoming larger. Find the smallest laser spot in this process by tapping Z- or Z+.
(7) Tap X-, X+, Y-, or Y+ to move the laser dot to where the work origin will be, and then tap Set Work Origin. Next, tap Run Boundary to check if the work origin is proper. If not, reset the Work Origin and run boundary again. After you set a proper work origin, tap Start.
(8) Laser engraving and cutting starts.
- Use Manual Mode in Luban
(1) Connect your machine to Luban.
(2) Load G-code to Workspace.
If you generate G-code in Luban, click Load G-code to Workspace to load the generated G-code to Workspace.
If you want to use a G-code file stored in your computer, click Open G-code. Select a G-code file (NC file) from your computer and click Open.
(3) Unselect Auto Mode.
(4) Put on the Laser Safety Goggles. Adjust the Laser Power to a small value and turn on Laser Power.
(5) Click X-, X+, Y-, or Y+ to move the laser dot above the material. Then, click Z- or Z+ to adjust the height of the Laser Module until the laser beam is focused down to the smallest spot.
The smallest laser spot means the best focusing result. To reach the best focusing result, first lower the Laser Module until the Lens Hood has slightly touched the surface of the material. Then, gradually move the Laser Module up. The laser spot will first become smaller before becoming larger. Find the smallest laser spot in this process by tapping Z- or Z+.
(6) Click X-, X+, Y-, or Y+ to move the laser dot to where the work origin will be, and then click Set Work Origin. Next, click Run Boundary to check if the work origin is proper. If not, reset the work origin and run boundary again. Repeat this step until you set a proper work origin.
If you use the camera capture method to determine the position of the image, skip this step to continue the following operations.
(7) You can also modify Laser Power and Work Speed in Luban.
(8) On the top-left corner of the Workspace, click the Run button to start engraving and cutting.
4.11 Power Loss Recovery
This feature enables you to restart a laser engraving and cutting job from where you left. If the Power Module is turned off or the AC power cable is unplugged during laser engraving and cutting, you need to first restore power and then restart the machine. To resume your job, read the Power-Loss Recovery instruction on the Touchscreen and tap Resume.
Power Loss Recovery applies to only laser engraving and cutting jobs that are started on the Touchscreen.
If the power loss is caused by the disconnection of the power cable, you must turn off the Power Module before you plug in the power cable.
4.12 Other Operations
4.12.1 Adjust Laser Height
If you want to change the laser height, tap Settings > Laser > Adjust Laser Height.
4.12.2 Camera Light
When calibrating the camera or using Auto Focus to measure the focal length, you can turn on Camera Light for illumination.
Camera Light is enabled by default. You can disable it by going to Settings in the APP List Screen, tap Laser, and turn off Camera Light under Laser Settings.
4.12.3 Adjust Lens Hood
During the laser engraving and cutting process, if you feel that the lens hood is too far from the surface of the material to produce the best light-blocking effect, you can follow the steps below to adjust the settings for the lens hood:
(1) Read the current value of the Laser Height displayed on the Home Screen of the Touchscreen. Here we use 21.0 mm as an example.
(2) Swipe left and select Control.
(3) Use a blank piece of paper, and use X-, X+, Y-, Y+, Z-, or Z+to move the Laser Module to the top of the paper. The machine coordinate of the Z Axis should match the value of the laser height, which is 21.0 mm.
(4) Turn the lens hood until it is 1 mm away from the paper. If you want to check the light-blocking effect, please do so after you put on your Laser Safety Goggles and tap Laser Power. Set a relatively small value (e.g. 1%) for Laser Power and turn on the laser.
