On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)