AWS PRGQA

If you need Xrayquality aluminum welds, then you need this title in The Practical Reference Guide series, written by Bob Schneider, Jr., author of The Eagle Has Landedwith a Little Help from Welding. This crisp, succinct publication gives engineers, designers, and technicians stepbystep directions in proper use of cleaning tools, assembling, and welding procedures. The premise is that cleanliness leads to highest quality. Heres an example Abrupt changes in weld bead height such as the termination of a weld bead over a previous weld pass should be sloped by grinding with a clean router and vacuumed prior to continuing the weld pass.