Thats funny you should mention the weather here in florida, and wearing shorts, im always guilty of welding without sleaves on, i tig weld alot so i dont worry about sparks ,but that flash burn can be a real pain,the weirdest thing ,i got my new garage about a month ago, so the first thing i did was paint the walls and floor white,to look kinda clean, so the first time i fired up the new tig machine,the reflection off the paint burned my face under my hood, i guess it got so bright behind me cause the paint it in turn reflected off the inside of my lense, by the way after another visit to the doc today and lots more eye drops my eye is better thank god, ill try not to do that one again