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"The Self-Heating Butter Knives by Firebox offer a clever modern day solution to applying cold preserves and spreads to bread in a simple fashion. The knife creatively warms up so that no matter if the spread is cold, it will apply evenly and smoothly to any surface. As knives are often cool to the touch they can make spreading condiments coming straight from the fridge a difficult endeavour. The Self-Heating Butter Knife offers a simple solution to this within the design of the kitchen tool. The knife is made using conductive titanium metal so that when the user holds it, their body temperature conducts heat within the knife. That heat can then be applied to the spread so that it melts and becomes easier to work with."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.trendhunter.com/trends/butter-knives>