If you happen to have access to a laser cutter, you’re bound to try cutting or engraving something it wasn’t designed for. We know we have. [Bonnie] and her friend [Brenda] decided to try something new — caramelizing sugar with a laser.
At their local hackerspace, NYC Resistor, they brought in some chocolate squares and colored sugar and started tinkering with the laser. It’s a 60W CO2 laser by Epilog. After testing a few different options they ended up with the following setting for optimum sugar caramelizing with only one pass:
By spreading a thin layer of sugar over top of the chocolate, you can effectively melt and bond the sugar to the chocolate — we suspect playing with the laser focus will also help you fine tune the process for your own confections.
You could just etch the chocolate with the laser as well — but that’s not quite as cool. Perhaps try to up your sushi game, why not laser engrave seaweed before rolling? Or make the perfect laser-cut gingerbread house thanks to designing it in CAD?