Straight answers
Questions makers actually ask
The recurring questions from r/lasercutting and owner groups, answered once and linked to the tools that go deeper.
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- What can a diode laser do that a CO2 can’t — and vice versa?
- Which materials should you never put in a laser?
- Is it safe to run a laser indoors or in an apartment?
- Do I need a fume extractor, or is a window fan enough?
- How much can a laser engraving business actually make?
- What’s the best first laser under $500?
- Should a beginner start with a diode or a CO2?
- Can a diode laser engrave metal?
- What actually marks stainless steel?
- Is the manufacturer’s software enough, or do I need LightBurn?
- How thick can a 20W diode actually cut?
- Why won’t my laser cut through, when it did last week?
- What is a test grid, and why does everyone insist on it?
- How do you engrave a photo on wood?
- What causes char on laser-cut wood, and how do I reduce it?
- Do you really need air assist?
- What is a rotary attachment for?
- How do you engrave tumblers and curved surfaces?
- Is a Glowforge worth it compared to cheaper CO2s?
- Fiber vs MOPA — what’s the difference?
- How long do laser sources last?
- Can you run a laser without venting outside?
- What bed size do you actually need?
- Do you need a license to sell laser-engraved goods?
- What’s the cheapest laser that cuts clear acrylic?
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