Hey Doug ( @dvw ) what is a fusion weld? I havent heard that term before.You will also find where the fusion welds are inside the housing are very sharp. I grind them smooth. If you blast do it while the axles/center section/housing are still assembled. Sandblast material is extremely difficult to remove completely from the inside crevices of the housing. If you really want the springs nice they need to come apart and get painted individually before reassembly.
Doug
Thanks did not know that! Learn something new every time I log in here!The two parts are pushed together and heated with electrical current. If you pull the center section you will see the 8 3/4 housing is made of multiple pieces.
Doug