A gentle bend is easy to make in a ball guide, just by drawing it over the edge of a workbench.
But the SMB horseshoe is a severe 180 degree bend.
For this job, we need a tool called a Slip Roll .
A slip roll draws metal through 3 rollers leaving a curve in a piece of metal's memory.
Now, one of the best kept "secrets of the slip roll" is that if you put a curved piece of metal into the slip backwards, it will make it completely flat again.
I cleaned all the old wax off the horseshoe, so the wax would not contaminate the rollers.
You also want to be careful not to scratch up the rollers, because they will keep "imprinting" those scratches into highly polished metal. When the rollers get all scratched up, you have to put them into a lathe, and cut them down to fresh metal.
Here the horseshoe goes in backwards:
And it rolls back out completely flat:
You can see the wear spot from the Ring/Rod.
Now I can use this as a template to make a bunch of of new horseshoes:
Someone is going to ask "Why not just measure the old one and make new ones from those measurements?"
I answer that I don't want to measure all those holes.
Having a template means that by using a transfer punch, all the holes will be exactly where they should be, no measuring required. Measuring along a curve would further complicate matters in that I would have to use a flexible rule....yeash, I'd rather do it the easy way.