I was mig welding post tops all day on Thursday. Got setup on a stool with post on tressels between my legs so I wasn't bending down all day. I was wearing army combat trousers so quite thick cotton cloth but my inner thighs are burnt up real bad and are now blistered. Has anyone else been burnt through clothes? I've been welding for almost 20 years and this is the first time I've been burnt through my clothes.