He probably needs to break the blade to put into a shavette or straight razor that use DE blades.Why do you need to break the blade? No matter which way you go there is going to be some element of risk of cutting yourself.
Yes, grab the far ends. There is never a completely safe way of doing a break but you can minimize the risk. I've never (knock on wood) cut myself breaking a blade in half. ALWAYS do the breaking in the blade's wrapper.when you say grab the ends you mean the cutting edges or the far ends?
You could use a towel and brake blade in half!
Make sure it still has the wrapping!
Hope that works for you!
I have an old pair of scissors that I use to snip them in half before I remove the blade wrapper.
Works like a charm!