In the world of woodworking enthusiasts, every time a new piece of equipment comes out, you need more space in your home!
Since the price of home laser cutters is becoming increasingly affordable, now is the perfect time to explore how laser processing can be utilized for your own applications.
How can you use laser engraving on wood to enhance the beauty of your work or create original gifts?
Unlike etching or marking, laser engraving vaporizes and removes a portion of the material being processed.
As a result, it leaves behind an indentation with a depth and color intensity that varies depending on the laser cutter's settings. It can not only be seen but also felt by touch.
However, laser engraving is more than just clicking the "start" button on a laser cutter.
Everything from choosing the wood and preparing it for engraving to the design, engraving method, and cleaning is part of the creative process.
In this article, we will explain laser engraving on wood in detail.
Choosing the Right Wood
Everything starts with finding the ideal wood! The width and length must be sized to fit within your laser engraver.
For beginners, wood that is 1/8 inch (approx. 3.2 mm) thick or more is easier to handle. However, there are other points to consider when creating your work!
Color: Most wood gets darker when engraved with a laser cutter, but there are exceptions. Light-colored woods like birch or pine are easy-to-use options for a wide range of applications!
If you want a darker, more subdued look, try walnut or cedar.
Resin Content: As mentioned, laser engraving "burns" the design into the material by vaporizing it.
Therefore, wood fibers or resin may adhere to the surrounding area. If you want to minimize the cleaning of this residue, we recommend wood with low resin content.
Bamboo, often used for cutting boards, is a good example of this. If you are buying from a specialized lumber yard, it is a good idea to consult the staff or choose summer-cut timber, which has less sap.
Grain: In some laser engraving techniques, aligning the wood grain (the direction of the fibers making up the wood) with the direction of the design yields a better finish.
If they are misaligned, the hard grain fibers may affect the final look of the design. When preparing your wood, place it in the laser engraver so that the grain runs horizontally.
Hardness: A simple way to check the hardness and ease of engraving is to press lightly with your fingernail. If you can leave a mark without much effort, it tends to be easier to engrave.
If it doesn't leave a mark, you may need multiple passes to achieve the same depth or contrast as softer wood. While this method is by no means a scientific test, it is very helpful!
Preparing the Wood
Once you have chosen the best wood for your project, the next step is preparation.
One or more of the following tasks may be necessary.
Cleaning and Sanding: Wood is often unfinished or has an uneven surface, and there may also be dust or dirt from transport and storage.
Cleaning with a microfiber cloth and light sanding is important for a beautiful, uniform engraving.
Staining and Coloring: While laser engraving itself has limitations in color expression, you can easily add accents to your work.
Using stains, water-based paints, or alcohol markers allows you to add color to the piece before engraving, giving you the best of both worlds.
You can also color after engraving to change the contrast of the design.
Taping: Applying masking tape or similar material is effective in preventing scorch marks by protecting the wood from the heat, dust, and resin generated by the laser. It can also be peeled off cleanly from the wood.
Performing these steps can reduce the workload after laser engraving.
Design and Engraving
Once the material is prepared, it's time to import your project into design software. Decide whether you will raster engrave detailed images or text, vector engrave complex designs, or combine both.
Raster Engraving: Works much like a paper printer, engraving the design line by line horizontally. It is suitable for images, text, and logos, but the processing speed is relatively slow!
Vector Engraving: Uses the same settings as laser cutting, adjusted to cut lightly into the surface of the wood.
It is suitable for engraving very fine details (which might be over-processed with raster engraving), engraving large areas quickly, or creating crisper outlines for raster engravings.
In terms of engraving, wood is a very easy material to work with.
However, there are two types of projects that are relatively difficult for wood engraving: reproducing gray shades when engraving photos, and deep engraving to create different heights (also known as 2.5D or relief engraving).
These two types of projects are generally for advanced users, but thanks to advancements in software and a wealth of tutorials, they are more accessible than before.
As for software options, Inkscape is an excellent free design program. Vector design software such as Adobe Illustrator and CorelDRAW are also popular.
Once the design is complete, import it into your laser control software. Depending on the file format, the suitability for the application differs.
Common SVG and EMF files are formats that make it easy to maintain the proportions of vector designs.
For raster engraving, you may need detailed image formats like BMP or formats that support transparency like PNG.
Once you load the file into the laser control software, each element of the design is converted into raster or vector engraving.
After confirming that the design is displayed and interpreted as intended in the software, select the settings for each process. Typically, you set the speed, power, and frequency as described in your laser engraver's manual. Then, turn on the exhaust system and start the process!
Safety First
Don't forget that wood can burn! Laser engraving applies a large amount of energy and heat to the material. Therefore, never leave the laser engraver running unattended, especially when processing thin wood boards or veneers.
Of course, test the settings on sample material before starting the project.
Using too much power on thin wood or engraving at very slow speeds can lead to fires. This not only puts you in danger but can also damage your laser engraver.
Post-Processing
Just like 3D printing, you can stop once the laser engraving is finished, but you can also add a little something extra.
This additional work is called post-processing. If the wood preparation and engraving steps went well, you won't need to do much to make the piece stand out even more.
First, peel off the masking tape. The tape can be easily removed along with any resin that adhered to the wood during engraving.
Next, clean the engraved surface using mineral oil and a microfiber cloth. This removes dust from the surface and makes the grain stand out.
Linseed oil is another common choice, but whatever you do, avoid boiled linseed oil!
Added solvents or chemicals can pose hazards, which is especially important for laser-engraved items used around food or small children.
Finally, clean the laser engraver. The air assist nozzle, which clears dust and smoke around the beam during engraving, can quickly become clogged with dust and resin.
This happens frequently when using resin-heavy woods like pine or fir, or materials like medium-density fiberboard (MDF) or cheap plywood.
Once you have finished all these steps , you should have a beautiful engraving on clean wood. Congratulations, your wooden laser-engraved piece is complete!
Choosing a Laser Engraver
Now that you know how to prepare for laser engraving on wood, how to engrave projects successfully, and how to clean up, you might be interested in purchasing a laser engraver or cutter.
The good news is that now is the perfect time to get started.
Before choosing a laser engraver, consider the following points:
What do you want to use it for? If you have specific project ideas, it will be easier to choose a machine.
Think about whether you only need an engraver to add decorations to parts cut by other tools, or if you also need a laser cutter capable of cutting parts. Also, check how much space you have for installation.
You need space not only for the laser engraver itself but also for the computer to operate it. Depending on the equipment chosen, it may need to be installed in a sufficiently large room with space for ventilation and an openable window.
What software will you be using it with? Not all laser cutters/engravers are compatible with all software, so you need to check for compatibility.
What is your budget? In the world of laser cutters, price is often linked to power output. However, since laser engraving does not require high power, laser engravers are relatively inexpensive compared to full-power laser cutters.
Alternatively, please feel free to contact us. We will listen to your needs and propose the most suitable model to help you get started with laser engraving!
Want to know more about laser engraver product information? View details about laser engravers and contact us below!
- Contact Us -
3DMart provides not only 3D printing but also three major contract services: "3D Printing Service," "3D Scanning Service," and "Spatial 3D Scanning Service"!
Follow our official social media for the latest updates:
Facebook | Instagram | LinkedIn