4 Main Questions to Ask Yourself Before Buying a Laser

• What is the maximum size of substrate you will work with? The answer to this question helps you determine the size of the system that is capable of holding the items you anticipate working with.
• What materials will you use? Selecting the correct wattage of laser depends on which materials you will use. While even low wattage (30 watt) lasers can engrave and cut most materials, laser wattage and speed go hand-in-hand. Materials such as acrylic, coated metals, and laserable plastic can be engraved with relatively little power at high speeds. Other materials like wood or rubber work best with lower wattages but require higher power to run at high speeds.
• How large is your projected workload? If you are devoting all your time to laser engraving, you will need a machine that can accommodate all the activity. If you are doing engraving as a side or part-time business, a smaller machine can accommodate your workload just fine.
• What is your budget? Smaller, lower wattage machines are less expensive than larger, higher power machines. Depending on your needs, the least expensive piece of equipment may cost you more in the long run if you find you need to upgrade soon after purchase.

-James Stanaway, Epilog Laser

Additional advice for new laser-users here.