Laser Engraver

GCC Laserpro Spirit LS

The Spirit LS laser engraver from GCC Laserpro is the laser engraver available at _Space.URI. It can engrave a wide variety of materials including glass, acrylic, wood, rock, and plastic.

Specifications

Work Area: 25 x 18 in. (640 x 460 mm) Extendable to 29 x 18 in. (740 x 460 mm)

Laser Source: 12 to 100W 10.6-μm sealed CO2 Laser / 20W & 60W 9.3-μm sealed CO2 Laser

Maximum Motor Speed: 80 IPS

Before Using the GCC Laserpro Spirit LS

Safety Precautions

To ensure your safety, and that of others in the makerspace, please obey the _Space.URI rules and guidelines, as well as the specific rules for using the Laser Pro machine.

1. After completing the Laser Pro certification process, you will receive a bag containing accessories necessary to operate the Laser Pro machine. Included in this bag is a pair of safety goggles, you must wear these before using the Laser Pro Spirit LS.
2. Be aware of your surroundings. Near the laser Pro is a fire extinguisher for use if needed. Before using the machine, make sure you are familiar with where the fire extinguisher is located before using the machine.
3. The large red button on the Laser Pro acts as an emergency stop button in the case of a fire or other emergency
4. Before etching, check to ensure that the SafeGuard is Enabled (or Disabled depending on the material you are cutting)

Using the Laser Pro Spirit LS

Basic Settings

Under Printer Preferences

• Options
  • Black & White
• Pen
  • Speed
  • Power
  • Turn on 'Air'
  • Check off Raster and/or Vector depending on your cut
• Advanced
  • Position Modes (defined)
    • Home - Use the top-left corner of the bed as the starting/orientation point.
    • Center - Laser will etch/cut using the position set manually as the center of the project.
    • Smart Center - Select the four corners of the material, the machine will find the center.
• Paper
  • Change the dimensions to match the document dimensions (check for units)
• Raster
  • Dithering Matrix: A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.

Pen Settings

Pen settings allow you to change the speed and power of the laser. The power is the percentage of full (100%) power. The more power, the deeper and darker the etch. Too much power may burn your material or etch too deeply. Changing the pen speed changes the time the pen spends in an area. If you can not use a strong power on a delicate material, try lowing the speed so the laser lingers longer as it etches the surface. Here are some starting pen speeds and powers for different materials.

Wood- Speed 40, Power 60

Rock- Speed 20-30, Power 70-80

Vector and Raster

• A raster cut is the default cut the laser uses. This in involves the laser moving back and forth across the surface as well as as it moves down the surface. A raster cut will etch anywhere there is color on an image, and is good for thick designs or designs that are filled in.
  • For a raster cut the, image can be converted into any bitmap up to Grayscale (8-bit). A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.
• A vector cut etches the Trace of an image. The pen follows the Trace of the design. This would be used either to cut something out or to etch delicate line work. A vector cut can be done if the design traced in CorelDRAW.
  • If you trace the image then check off raster and vector, the image will do a raster cut. Then the laser will etch the trace over it.

Steps

1. Use the Dell laptop next to the Laser Pro only
2. Open the program, CorelDRAW, located on the desktop
3. Turn on the Laser Cutter by using the switch on the right side of the machine. Do not turn the laser key until you're prepared to print
4. Create an image or import one into CorelDRAW
5. Measure the materials you will be engraving or cutting to determine the size of the image
6. Change the dimensions of the document to match the dimensions of your working surface
7. Using the guide marks in CorelDRAW scale your image to the size required
8. When your image is completed, click the print dialog
   1. Under printer choose the Spirit LS as shown below
   2. Choose properties and set the print settings for your material according to the reference sheet

1. After finalizing the software settings, click the print button
2. Place your material in the bed of the laser cutter and auto-focus the laser
3. Once this is completed, move the mirror head until the red dot is in the center of your drawing space
4. To ensure that your settings are correct close the lid and press the start button
5. If the mirror head appears to be in the correct drawing space, cancel the print, re-center the mirror head, turn the laser key on and press print again to begin engraving or cutting
6. Once your print is complete the laser will recenter itself. If you do not touch your material, you can got over the etch and deepen it by pressing Start again. This can help compensate for lack of power.

Lists Of Engraver Materials

Printer Properties
Job Description	Material	DPI	Pen Speed	Pen Power	PPI	Raster (R) / Vector (V)
Score	Foam Board (1/4")	500	30	60	400	V
Cut	Foam Board (1/4")	500	20	60	400	V
Cut	Acrylic (3mm)	500	5	85	400	R
Photo	Maple	600	60	85	400	R
Cut	Paper (Black Pen)	500	50	70	400	R
Cut	Paper (Red Pen)	500	15	100	400	V
Engrave	Glass	500	25	85	700	Both
Engrave	Ceramic Cup	500	50	75	1400
Engrave	Acrylic Keychain	500	10	100	1000
Engrave	Wood Pen	500	30	50	1000

DO NOT Engrave w/ these Materials

• Polyvinyl Chloride (PVC)
• Poly(methyl methacrylate) (Plexiglass)
• Vinyl
• Most metals (check with _Space employees)
• Carbon fiber
• High-Density Polyethylene (HDPE)
• Printed Circuit Boards (PCB)