How to Weld Mitered Corners

Today we gonna be teaching you how you can  weld a miter joints and keep  distortion down to minimum if there's  another way that you guys do it I'd like  to hear about it just comment below  right here I'm just cleaning up my table  making it nice and pretty for you guys  to watch it on like to do this after  I've been welding on my table.

After I've  cut the s I'll go around and I'll grind down the edges till I have it  about halfway and the sides and then on the backside where it's gonna be an open  corner I'll grind that almost all the way down like to where it's pretty much  flat and then to fill it I leave alone I'll just deeper it because I feel it is  generally strong enough for me as is so right here I'm just squaring it up and  then I'm putting a mark so that you can  watch how much it pulls from just the  one tank and I put it on the inside so you can see that.

And to get this thing  squared at ninety I have to have an open  an opening on the backside there so I  tacked that up and then off-camera I  tacked up the other open corner side and  then the fill at last and it stayed nice  and square after that so on this thin  wall stuff I don't have a problem with  running downhill on it it's so thin and  I've battled it so much that if you try  to run uphill. 

it's just gonna blow through even on a cold setting this is  oh nine five so now I'm going to be  running towards the outside to try and  open it up even further  and as I start going I start slowly and  in little circles towards the end where  there's a gap that way I don't blow  through so I generally want the fill at  last because it's gonna pull the most so  if you lock down on the other corners  then it's not going to pull very hard  and since this is the only side that I  usually don't grind down.

I'll go ahead  and do little circles to make those  ripples really stand out so if you look  close you can see that it closed in just  a little too much so on the next one if  I was to adjust from this I would  probably run the but welds to the  outside first here I'm showing the  penetration profile you can see that  running the open corner downhill  penetrated all the way through as well  as beveling the butt joint penetrated...