Aluminum Fab and keeping stuff square

Hey so I’m a senior in high school in NW Washington and I’m working on some aluminum projects. Currently I’m building cattle chutes for my teacher and I got thrown on the project because he says that “I’m the best aluminum welder he’s seen in his 40 years of teaching.” However the problem is that both we can’t buy a fixture table because kids will do stupid shit to it like wail on it with a ball peen hammer or cut with a plasma cutter or hit it with a rock wheel and divot it to shit. And all our tables are about as flat as the Rocky Mountains from kids doing this kinda stuff. So my question is what is my best bet for laying everything out square. Should I lay it on the concrete floor to tack it up?

And here’s some pics of my welds just cause why not.





1 Like

Look into a selection of the squares Fireball sell. By utilizing the tabs on the squares you can get a good degree of flatness and perpendicularity.
The cast iron mutant squares jumbo and or regular can take a beating and would be my suggestion as a starting point.

1 Like
1 Like