i did a frontend conversion for a guy in missouri.

gsxr onto a zrx.

when i was trying to press the stem out of the zrx triple the aluminum piece i was using to press with exploded,and bent my press up and bent the end of the stem and smeared the threads.

so i machined it down,welded it up and cut some new threads on it.  

 i did not have a die handle.
but,i had a triple tree that the die would fit in the leg hole of.

 so i machined a steel slug that i could hold in my drill chuck in my tailstock.
i made it a slip fit and greased it so i could use it to stick in the leg hole to keep the die square while i cut the threads.

 i turned the lathe by hand.
the threads came out really nice and square.

 the gsxr triple was thinner than the zrx triple,so i had to machine an aluminum spacer and press it on the stem to make up the difference.
you can't see it when it is installed unless you kneel down and look for it.