Be ready for a virtual bloodbath, which ever method you use.
Cauterizing is the quickest way to stop the, uhm, spurting.
Have the iron nice and hot before you even start cutting.
Be sure the steer is tightly held throughout the procedure.
I dont think it hurts them all that much, but it is graphic.
The first time I assisted the vet in this type of horn removal
there were 2!! adult men who fainted, leaving me (a 14y/o girl) to help the vet.
Those guys both just layed out on the barn floor and we hadn't time to move them 'til it was done.
Thanks for the memory, by the way.
Good luck with him!