Had an interesting set of parts come through. 1" thick beams that serve as a mount for a rack gear track that a robotic trolley climbs up and down for automated parts storage system.
So...Mig 3/16" sheet brackets to 1", inside corners only, bracket ear to ear dimension called out on print to +-0.015".
A) Tack it, weld it, beat it into dimension.
B) Lock it down with extreme prejudice leaving only enough room for the nozzle.
THATS RIGHT! B!!!
Used Fireball shims to center, square, and clock the bracket to the other two pieces. Push them together flush and we are good to go in 3 dimensions. Just enough room to get tacked.
Next I pull the top shims out and swap em for a 2-4-6 block. (won lottery...OD is 6" even). Used bolt holes to attach 2-4-6 blocks as grab points for the 2-4-6 block.
This gives me more clearance for the gun as well as a little viewing window on top just in case i feel like looking at the puddle.
Forgot to grab a pic of the bottom side weld but I just removed all the blocks, flipped the part, clamped the 2-4-6 to the end as a strongback for the final lateral weld.
Felt like overkill but everything came out dead nutzz.
Definitely open to suggestions, short cuts, time savers.