How to remove or cut off the shank of a button

How to remove or cut off the shank/loop of a metal button....(www.olifstudio.com)
Same method can be used to remove brooch pin.
Please note that this method may NOT be effective for certain button/brooch made of tougher/harder metal. But no harm trying this out as this is the cheaper DIY option compared to having to use much sophisticated cutting tool.
What you may need:
- Safety goggle to protect your eyes. When you're cutting or snipping off the shank, it may have tendency to fly off.