Laser Cutter Certification

From Claremont MakerSpace
Laser Cutter Certification
Version 0.1.0
Approval Date 2020-11-03
Prerequisites
Document/Printout Download (old versions)
For Tools/Shops

Training Check-Off List:

Safety

In order to be certified to use the GCC Spirit, you must communicate your understanding of the following procedures and rules:

Fire Hazard

Never place flammable materials or liquids on or in the Laser Cutter when it is on or in operation. Liquid acetone, alcohol, and other chemicals are, and can release vapors that are, flammable.

Pinch Hazard

When the printer is in operation do not put your fingers near any moving parts including belts, motors, or gears. Tie back long hair, jewelry, or clothing that can get caught in the moving parts of the machine.

Blinding Hazard

The GCC Spirit uses a CO2 laser to cut materials. The CO2 laser is not in the visible light spectrum, but can cause permanent damage to eyes. Do not disable any of the machine’s safety features, designed to prevent its operation while doors are open. This can result in damage to eyes.

Electrical Shock Hazard

Don’t attempt to service the machine while the power is on.

Machine Venting

Make sure to turn the fume extractor on during laser operation. If the fume extractor is not extracting, it could be clogged. Please contact the laser lead and do not operate the laser if this occurs.

Material Safety

Because the laser vaporizes/burns material to produce results its is important to never cut a material that releases caustic or poisonous gases. Refer to the Materials list for examples of what can and cannot be cut. If you are not sure what a material is that you wish to cut or your material does not appear on the list ask/contact a shop lead (electronics@claremontmakerspace.org).

The list does not include all materials or materials that have “Trade Names”.

Never cut any variety of Vinyl or any material containing Chlorine.

Emergency Stop

Do not use the emergency stop to turn off the machine. Please follow the correct machine shut down procedure. The emergency stop should only be used during an emergency.

Anatomy of a Laser Cutter

In order to be certified to use the GCC Spirit, you must be able to identify the following parts of the machine:

  • User Interface
  • Power Switch
  • Laser Switch
  • Exhaust Switch
  • USB Port
  • Belts
  • Stepper Motors
  • Lead Screws
  • Lens
  • Mirrors
  • Bed
  • Gantry
  • Air compressor
  • Air supply line

Operations Checklist

In order to be certified to use the GCC Spirit, you will cut out a tag engraved with your name (tag is to be 5" long and 1" high with a 1/4" hole at the end) to be hung in the laser area. You also must show that you:

  • Are familiar with common materials that are safe to use.
  • Can prepare a file for printing using CorelDraw or another software and export the file for printing.
  • Confirm that your material is secured to the bed
  • Can upload a file to the Printer
  • Are able to focus the laser for a given material using the manual focus.
  • Can start, pause, and stop a print
  • Recognize irregular operation
  • Know the location of the emergency shut off
  • Know what to do in the event of a fire
  • What parts need regular cleaning (and who to contact if the laser isn't working as expected)

Pre-Operation

  • What material are you using?
  • How would you determine settings for speed/power for a material?
  • What does the software mean by Raster and Vector?
  • Is your material flat/secured to the bed?
  • Are you performing multiple operations at once (raster and vector)?
  • How do you turn on the air compressor and exhaust?
  • If you’re performing a Vector, are the line widths correctly set?
  • In the event of a fire, what should you do?
  • How do you clear the bed of debris after the cut is finished?

Operation

  • Is your material safe to cut?
  • Is the Laser Focused?
  • Is your material secured?
  • Is the head in the correct starting position based on your settings?
  • Do you have the correct speed and power levels for your process?
  • Is the Exhaust on?
  • Is the Compressor on?
  • If you are using vector mode, are the line widths set correctly?
  • Have you chosen the correct mode for your operation?
  • Are you engraving or cutting?
  • From what position will the cut commence?

Post-Operation

  • Did you wait for the machine to vent?
  • Has the material been cut all the way through? If not, what do you do?