This handmade champagne saber is available at the Alambika store in Montreal, Quebec and across Canada at alambika.ca. 

How to saber a bottle of Champagne?
Simply hold the knife loosely, with your thumb well planted at the top of the junction between handle and blade. In a single smooth motion, slide the blade along the seam of the bottle until it strikes the neck. Any and all glass debris will be ejected by the pressurized content of the bottle.

Remember: the colder the bottle, the easier it is to saber. Make sure to test your technique in a safe environment first, always responsibly. There's nothing wrong with practicing on a few bottles of Prosecco before beheading a good Champagne!