Sterilizing cutting tools

[NDW76]

Since I found out that the small shoot growing from one of my orchids was a Kieke I have spotted a lot of them on one of my bigger orchids.

I am planning to cut one of these off and trying to grow a new orchid, but I want to do it properly. I know I have to sterilize any cutting tools before I use them. I have heard of some people holding a cutting tool over a flame to sterilize a cutting tool. But as a man who likes to collect sharp shiny things I am loath to put a blade over a flame and ruin the temper.

I was wondering if wiping a blade with a solution of 70% ethyl alcohol would be enough to sterilize a cutting tool.

Thanks for any help you can give me.