i tried multiple lasers a 100mW one and a 50mW one (those could not burn) i watched several videos about lasers so i could probably own one without burning the house down or blinding myself im getting one of those laser 303 thingys that are focusable i dont think it can burn unless you focus it so i will keep it unfocused for most of the time when its sitting around for safety ill probably mostly use it after eating foods that i order which come in paper bags burning stuff on the balcony my dad definetely doesnt know the dangers of a 1 watt laser but i do and ill make sure to not hold it against reflective surfaces or surfaces that light on fire easily my only 3 questions are 1 is a 1 watt laser able to burn concrete and 2 is pointing the laser at paper able to give me eye damage due to the shine and 3 is it safe to use the laser in the balcony in order to burn papers (the balcony is accessable by 2 plastic doors but the balcony is made out of concrete)