Headstock fatigue rupture prevention

[madokie]

railroad engineer it ...figure out what it should be,with a extra load factor,, then add 30% ...it will never fail then LOL.. i would also add shoulders of some kind to keep the top clamp from moving in different directions,both sideways and up and down, movement will cause cracking and failure..the more bolts clamping ,the better,anything to stop movement ..u could connect the top clamps , with a bar,or two,bolted to both..increase the size of the clamps where the bolts go in, they look too thin too me,(9mm?? i would double that,even if i had to buy a counter sink tool to get the bolt in)) better too much than too little..i didnt see anything to locate the clamp, just the 10mm bolt,which is not for locating parts,,add a dowel pin 4mm,1/4,, to keep clamp in place ,bolt just holds clamp down then,,has stress in only one direcetion..