I bought a 3 pack of 100mw cw supposedly 250mw pulsed diodes from zetbiz in korea. they are purportedly sony sld1236vl diodes from a pack for 16x dvd burners. they are very bright. I have so far been unable to burn with them though. I have 2 axis modules. I mounted one in a module and focused the dot as small as I can get it but no burn. this setup is running off 2 AA batteries with minimal regulation. I am building a regulator for a flashlight from the Daedal sticky. I am new to this so this is my first attempt at a burner any help would be appreciated.