The laser cutters can cut materials up to 1/2" thick, although with some denser materials, no thicker than 1/8" is suggested. The following is a list of acceptable materials with some We have two tables with suggested settings for various acceptable materialVector Processes and Engraving Processes on acceptable materials, however, exact settings will vary so a materials test should always be performed. ( The settings provided below should be used only as REFERENCEa reference, since they are settings previously used by our team, but won't necessarily work the same way with your own material).
Also take in into consideration that due to natural variations in the pressure of the vacuum, it is expected that the laser cutters might lose power over the day. For example, If if you cut something in the morning, it might need a little more power if you cut again in the afternoon.
Prohibited Materials
- Lexan
- Polyurethan
- PVC
- Styrene
- Polycarbonate
- Vinyl
- Glass
- Foam Core
- Foam board
- Metal
Use of prohibited materials could result in the material melting to the laser cutter bed or the release of toxic fumes. Due to the severity in risk, cutting prohibited materials will result in loss of lab privileges and possible fines for damages. Please note that the Co-op sells material that looks like acrylic but is made of PVC and styrene.
For more information on materials that can possibly be cut (not all materials listed are approved by SOA IT), please see: http://www.lasercuttingshapes.com/page/materials
Another good resource: http://atxhackerspace.org/wiki/Laser_Cutter_Materials
Acceptable Materials
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These are only suggestions: Every type of material will react differently with the laser, even from one plastic to the next. Use these settings as your starting point then adjust one variable at a time until you achieve the result you desire. Settings for any material are a matter of personal preference. Not every material that can be run at high speed should be run at high speed. A better mark can often be achieved by slowing your laser and giving the laser longer to react to your material.
- Test your material: If you have a small area of the material you won’t be using, or an extra item, take advantage of this area to test out your settings by engraving a small square or cutting a small circle. You can fine tune your settings in these areas.
- Similar materials use similar settings: When you are working with a material you aren’t familiar with, think about a similar material and what settings you would use with that product.
- When in doubt, start low: Remember, you can always re-run your job as long as you don’t move it in the machine.
- Run only one part of the file: If running a job on a new material, you can always just select one piece of the linework, like a piece of text, and run that part first to make sure your settings are perfect before running the whole file.
Review the Prohibited Materials listed on the Laser Cutter Policies page before purchasing or cutting material.
- The blue table covers cut settings for Vector Processes, which are for clean lines. If you wish to score/etch your material with clean lines, you will need to experiment with slightly weaker settings than the ones listed below. This is another reason running a materials test is imperative.
- The yellow table (under the blue table) covers Engrave Processes, which are for raster images. You will rarely, if ever, run an Engrave Process.
Vector (Cut/Etch) Process Settings
| Warning |
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Suggested Settings – Always do a materials test before every new cutting session to determine the proper levels for your material |
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. Settings in red shouldn't be changed without approval and assistance from Tech Desk Staff. |
Vector (Cut/Etch) Process |
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As a rule, wood products (basswood, paper, chip) should have PPI set to 380. Plastics are generally PPI = 1000 but check the individual material.
| Material | Depth | ||||
|---|---|---|---|---|---|
| Speed |
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| Power |
|---|
| Frequency | Quality & Safety Notes | ||||
|---|---|---|---|---|---|
| Acrylic (Plexiglas) | 1/8" (3 mm) | 12 | 100 | 100 | Vector cutting table (cross-hatched) must be used. A general rule of thumb for cutting acrylic is to relatively slow speed and high power; this produces a more flame-polished edge. |
| 1/4" (6 mm) |
| 6 |
| 100 |
White board = charred edges (fun fact: the CNC knife will cut without the charring)
try higher speeds for lower burn marks
400
*Use this setting with caution. Try out a range of settings on a test piece first
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| 100 | There are two types of acrylic: cast is better for engraving (it creates a frosted look when engraved) and extruded acrylic produces a much better flame polished edge. | ||||
| 3/8" (9.5 mm) | 3 | 100 | 100 | Note from manual: Adjusting the standard focus distance so it is closer to the lens by about .080” (2 mm) will produce better edge quality when cutting 1/4” (6mm) acrylic and thicker. Two passes can be used for cutting thicker materials. | |
| Bristol | 90 | 80 | 25 | ||
| Chip | 1 ply (0.5mm) | 100 | 25 | 50 | Always check material thickness with a caliper. |
|---|---|---|---|---|---|
| 2 ply (1mm) | 70 | 50 | 50 | ||
| 4 ply (1.5mm) | 35 | 50 | 50 | ||
| 6 ply (2mm) | 25 | 50 | 50 | ||
| Corrugated cardboard | 1/8" (3 mm) | 100 | 60 | 50 | Always check material thickness with a caliper. |
| 3/16" (4.5mm) | 65 | 60 | 50 | ||
| 1/4" (6 mm) | 60 | 60 | 50 | ||
| Leather | 1/8" (3 mm) | 60 | 100 | 50 | |
| Mat Board (Crescent/Canson) | 30 | 40 | 50 | ||
| Museum Board (Strathmore) | 1 ply | 100 | 25 | 50 | |
| 2 ply | 40 | 25 | 50 | ||
| 4 ply | 25 | 25 | 50 | ||
| Plastic*** | 2-Layer Laser Engraveable 1/16" (1.5 mm) | 10 | 40 | 100 | |
| Plywood | 1/4" (6mm) max | 12 | 100 | 10 | Recent incidents of fire indicate that this material requires caution and additional supervision if cutting is attempted. Additionally, glue and air pockets may prevent complete cut-through in some areas. |
| Twill | 90 | 80 | 25 | ||
| Wood | Thin Veneer | 50 | 80 | 10 | Note from manual: When cutting wood, multiple passes may allow cutting of thicker materials. Using Color Mapping you can adjust the focus point between passes down to the center point of the cut for the best results. Always use the additional Sweep Air Assist when cutting. |
| 1/8" (3 mm) | 25 | 100 | 10 | ||
| 1/4" (6mm) | 13 | 100 | 10 | ||
| 3/8" (9.5 mm) | 7 | 100 | 10 | ||
| 1/2" (12 mm) | 4 | 100 | 10 |
***Ask for approval/assistance for the exact plastic you want to cut.
(Raster) Engrave Process Settings
| Warning |
|---|
Suggested Settings – Always do a materials test before every new cutting session to determine the proper levels for your material. Settings in red shouldn't be changed without approval and assistance from Tech Desk Staff. |
Engrave Processes are for raster images only. Engraving information is located here.
(Raster) Engrave Process | |||||
|---|---|---|---|---|---|
| Material | Type | DPI | Speed | Power | Quality & Safety Notes |
| Acrylic (Plexiglas) | Photo | 300 | 100 | 40 | Vector cutting table (cross-hatched) must be used. There are two types of acrylic: cast is better for engraving (it creates a frosted look when engraved) and extruded acrylic produces a much better flame polished edge. |
| Text / Clipart | 300 | 100 | 60 | ||
| Text / Clipart | 500 | 100 | 55 | ||
| Alumamark | Engraving | 300 | 100 | 20 | Engrave only. Alumamark settings PDF. |
| Engraving | 500 | 100 | 10 | ||
| Anodized Aluminum | Photos/Clipart | 400 | 100 | 35 | Engrave only. This material is reflective, so avoid using full power. Use low power and high speed for crisp edges. |
| Photos/Clipart | 500 | 100 | 30 | ||
| Text | 500 | 100 | 40 | ||
| Brass (Painted) | Painted solid brass | 300 | 100 | 25 | Engrave only. Must be painted. Not magnetic. Ask for assistance from the Tech Desk when etching this material. Use low power and high speed. Blue paints are more difficult to remove. If the finished product has a shadow, use alcohol or lacquer thinner to clean the edges. This material can be tricky: if it's polished before being painted, you'll see a polished finished product. If the brass isn't polished before being painted, the result will be dull. |
| Painted brass-coated steel | 500 | 100 | 15 | Engrave only. Must be painted. Magnetic. Ask for assistance from the Tech Desk when etching this material. Use low power and high speed. Blue paints are more difficult to remove. If the finished product has a shadow, use alcohol or lacquer thinner to clean the edges. This material is steel that has been coated with brass, that brass layer is polished, then a layer of lacquer is applied, then the paint is applied. When you etch it, you're exposing the polished brass that is protected from oxidation by the lacquer coating. This material is preferred over painted solid brass. | |
| Cork | 300 | 100 | 30 | Engrave only. | |
| Glass | 300 | 35 | 100 | Engrave only. Be sure that your material isn't actually leaded crystal. Jarvis dithering pattern and using 80% grayscale for black is recommended. Frosting is the result of etching this material. To dissipate heat from the engraving process, use either a wet sheet of newspaper/paper towel or a thin coat of dish soap. | |
| Leather | Photo | 300 | 100 | 20 | |
| Text / Clipart | 500 | 100 | 25 | ||
| Marble | Photo Engraving | 300 | 100 | 35 | Engrave only. |
| Text Engraving | 500 | 100 | 45 | ||
| Plastic*** | Various | 300 | 100 | 20 | Ask for approval from the Tech Desk when etching this material. |
| 2-Layer Laser Engraveable 1/16" (1.5 mm) | 300 | 100 | 40 | ||
| 2-Layer Laser Engraveable 1/16" (1.5 mm) | 500 | 100 | 25 | ||
| Stainless Steel with Cermark Coating | 500 | 45 | 100 | Engrave only. Must be coated with Cermark metal marking spray. | |
| Wood | Photo | 500 | 70 | 100 | Note from manual: When cutting wood, multiple passes may allow cutting of thicker materials. Using Color Mapping you can adjust the focus point between passes down to the center point of the cut for the best results. Always use the additional Sweep Air Assist when cutting. |
| Clipart / Text | 300 | 60 | 100 | ||
| Clipart / Text | 500 | 65 | 100 | ||
| Deep Engrave | 500 | 30 | 100 | ||
***Ask for approval/assistance for the exact plastic you want to engrave.
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