Note: What you need:

1. A laser engraver
2. A computer with Lightburn installed
3. A ruler
4. Few thick large paper/cardboard
5. (Optional) A vernier caliper

Note: Different machines have different settings, the images in this guide are for reference only.

Make sure the paper is lying flat and not curled up during engraving and measuring.

Note: We recommend saving different lens as different machines so you can simply switch in Lightburn after changing lens. 

1.Turn on Lightburn and make sure the machine is connected to the machine with Data Cable. Click Devices, “Create Manuallyˮ, and select “BSLFiberˮ and click “Nextˮ.

2.Rename the device if necessary, click the “mm / secˮ as the machine units and input the dimensions of the work area. Click “Finishˮ and “OKˮ to complete the new device installation.

3. Click “Device settingsˮ, and set “Galvo and Basic Settingsˮ and “Ports and Laser Settingsˮ based on pictures below.

Note: 

Enable "Galvo 2" is X Axis. Select "CO2" as the laser type and "1" as the Door protect port. Set frequency range from 5 to 30 KHz.

4. Place the paper on the engraving bed. 

Place the ruler vertically on the surface of the paper and measure the distance from the lower edge of the laser head to the surface.

The optimal focal length for manual measurement should be 5 mm less than the optimal focal length of your machine (written in your user manual). 

Tips: 

You can press the ruler to the side of the laser head to help make it vertical.

5.Go to Laser Tools → Calibrate Galvo Lens → 9 Point Correction (Easy).

6. Based on the popped-out window, enter the working area of your lens, and the size of the box to output. Click Next to continue to the next step. 

7. Enter the settings based on your material and lens.

Tips:

	Material	Speed	Freq (KHz)	Pulse-Width	Power
--	--	--	--	-	--
--		--	--	-	--

8. Click the Frame button and verify that the size of the frame is valid, or return to the previous step using the Go Back button if you need to adjust the size.

9. Click Start to mark the design. Once finished, do not move it. Click Next to continue to the next step. 

10. Select the LightBurn Dragon that matches the orientation of the output from your laser. Click Next to continue to the next step.

11.   Take out the paper, Use the ruler to measure and enter the horizontal distances between lines, as shown in the graphic. Click Next to continue.

Tips: Using a vernier caliper can make the measurement more accurate.

12.  Measure and enter the vertical distances between lines, as indicated in the graphic. Click Next to continue. 

13. The final page displays the resulting corrections that will be applied to each axis. Click Done to save the data.

Scale check

1.Draw a square in Lightburn with a fixed size.

Note: 

In this guide, we will draw a 100 mm ×100 mm square. You can choose a size based on your lens and requirements. 

2. Click Frame and use the Preview helper to verify the position.

3. Click Start to begin engraving.

4. Measure the size. If there is a discrepancy between the actual engraved size and the set size, proceed the following steps.

5. Click the device setting icon

6. Click the little buttons beside the Galvo.

7. Click the above one and inter the Y-axis and click the bottom one to enter the X-axis

8. Engrave the square again and check if the size is correct. Repeat doing a correlation or scale check if necessarily.