11-09-2021, 09:35 AM
that furface looks like its not had any attention for several decades.
if the centre row of studs are cracking, then for me the block is dead.
as dave dye suggest the run out on the stud thread dosnt help, but thats only half of what causes the crack.
its like bending a 1mm sheet of steel, easy on its own. but put a FLAT 2 inch steel plate on top. NOT so easy.
if the head and block are warped, the stud will pull the block surface upwards into the void. and crack the surface.
put a flat head against a flat bock. and the tensions can be 10 fold without problem.
tony.
if the centre row of studs are cracking, then for me the block is dead.
as dave dye suggest the run out on the stud thread dosnt help, but thats only half of what causes the crack.
its like bending a 1mm sheet of steel, easy on its own. but put a FLAT 2 inch steel plate on top. NOT so easy.
if the head and block are warped, the stud will pull the block surface upwards into the void. and crack the surface.
put a flat head against a flat bock. and the tensions can be 10 fold without problem.
tony.