Hmmm.... I just read through this whole thread.Lifetime17 I'm not looking for an LPM, this all orginated by me asking which blue/Violet laser has more power, 405nm or 450nm. I posted 2 I was looking at off of laserpointerpro.com, and I was then told laserpointerpro.com is a scam, I can get the exact same thing off eBay for $5 (I have several of those very weak 5mw that pale to the 1,2,3 and 6w I have from laserpointerpro.com) I was also told laserpointerpro.com misleads and are not stated power, I've had mine LPM and are at 85-90% of stated power, I was told they over charge at laserpointerpro.com, but of all the referenced sites I only find the same power ratings of laserpointerpro.com, but at 50+ % more money. I have in hand from laserpointerpro.com 1,2,3 and 6w and find them pretty damn good, capable of causing damage from accoss the room...something the exact sam laser for $5 to $30 off eBay can't touch. I'm wondering if anyone else has actully owned anything from laserpointerpro.com and used it to know for sure ? I've asked for a direct link to any site, where its cheaper for the same thing......LPM was only mentioned to see if I've actually measured any of mine.....I have.
Power density of the beam is more important than the wavelength if you are just trying to burn something. That means to get the most power into the smallest beam profile that you can. Really, a watt at 405nm is the same as a watt at 650nm when it comes to starting a fire. One caveat, the color of the material you are trying to burn must be able to absorb the light from whatever laser you decide to get. So, don't get a laser the same color as your material as it will be mostly reflected. Black materials seem to absorb the best.