Indicators of poor workmanship

Little balls or smears of brazing material on the tubing or lugs.

Insufficient braze material such that the fillet is starved.

Excessive braze material such that the fillet is a bulge rather than a fillet.

Uneven filleting (size of fillet is not uniform).

File marks or sanding marks on the lugs or tubes.

Welds that are unevenly ground down.