Timelapse Welding my DIY Tiny Toy Hauler

Some things I didn't mention in the narration.
1- I have two garage doors in my shop. The one you see in this picture was closed because thats the side that opens to the street. I have plenty of ventilation with the man door and rear garage door open, plus I have a ceiling fan on that keeps the air moving around.
2- Normally you don't want to pour all your heat into one spot when welding or you will cause your metal to bow and warp. I've made that mistake plenty of other times, and even on my last trailer build that took a lot to fix. However, in this case, I already have the bottom side completely welded together, so there was no bowing or warping of the metal since the rest of the frame was there to help hold it in place.