4.6 KiB
🔲 How to Use the Laser Cutting Machine
(This page provides step-by-step instructions for students on how to prepare and operate the laser cutter. Insert images where noted to enhance clarity and guidance.)
1️⃣ Preparing the File
Software: SolidWorks / Illustrator / CorelDraw / etc.
- Export the design as a DXF (.dxf) file.
- Send the file to the designated email account (e.g., instructor's Gmail or lab email).
- On the laser cutting computer, download the file and import it into RDWorks.
2️⃣ Setting Up in RDWorks
📌 Insert screenshot of RDWorks interface here
- Arrange the parts on the virtual sheet using directional arrow buttons.
- Assign colors to each part depending on whether it’s for cutting, engraving, or marking.
- Double-click the selected color from the left color bar to adjust settings:
- Input appropriate Speed and Power values based on material type and thickness.
- Alternatively, use Parameter Library to select preconfigured material profiles.
✅ After setting all values, click “Download” to transfer the file to the machine.
3️⃣ Operating the Laser Cutter
📌 Insert image of laser cutter with labeled parts here
- Turn on the machine and main power switch.
- Insert the material (e.g., 3mm plywood, 6mm acrylic).
- Flip the light knob to activate internal lighting.
- On the machine panel:
- Press “File” and select the file
- Press “Enter” to load it into memory
- Use arrow keys to move the laser head to the desired starting point.
- Adjust the Z-axis (height) of the laser:
- Use a spacer tool (e.g., LEGO brick) for low thickness.
- For thicker materials, keep around 2mm distance between the laser head and the material.
- Press “Origin” to set the starting position.
- Press “Frame” to preview the cutting boundary.
- Once confirmed, press “Start” to begin cutting.
🛡️ Safety & Efficiency Tips
📌 Insert image of safety guidelines and PPE here
- Always wear safety goggles during operation.
- Never leave the machine unattended while it's running.
- Use tape or weights to hold down curled or uneven sheets.
- Use Frame preview to avoid cutting beyond the material area.
- Organize parts efficiently on the sheet to reduce material waste.
✍️ Engraving Notes
- Use lower power and higher speed for engraving.
- Perform a small test area first to avoid burning the material.
- Ensure the surface is flat and clean for consistent engraving quality.
🧪 Cutting Efficiency Test Example
📌 Insert photo of test squares with labels
Objective:
Determine the optimal speed and power settings for clean cuts on 2.45mm plywood without manual force.
Test Parameters:
- Speeds (mm/s): 15, 20, 30, 40
- Powers (%): 15, 27, 40, 52, 65
⚠️ Do not exceed 70% power. It may damage the machine.
Successful Cutting Combinations:
| Speed (mm/s) | Power (%) |
|---|---|
| 15 | 40 |
| 20 | 30 |
| 10 | 52 |
| 20 | 52 |
| 30 | 52 |
| 15 | 65 |
| 20 | 65 |
| 30 | 65 |
| 40 | 65 |
Conclusion:
Higher power settings (52–65%) combined with moderate to low speeds produced clean cuts. This combination allows the laser sufficient energy and time to fully penetrate the material without excessive scorching.
🔍 Focal Point Experiment
📌 Insert photo of inclined test setup with cuts
Objective:
Understand how varying the laser's focal height (Z-axis) affects the quality of cuts.
Setup:
- A wooden plate was placed at an inclined angle on the cutting bed.
- The laser cut along the slope, testing multiple focal heights.
Observations:
- When too far, the beam was unfocused, producing wide and burnt edges.
- When too close, the beam was concentrated but often failed to cut through fully.
- The ideal distance created precise, clean lines without burn marks.
Conclusion:
The laser’s focal point plays a crucial role in cut quality. Proper Z-axis alignment ensures effective energy concentration, minimizing burns and maximizing precision.
📎 Add Barcode Below
📌 Insert a QR code here that links directly to this documentation page on your website