A Hot, Fresh Shave

indulge in warm, rich shaving cream at the touch of a button. OneBlade’s Hot Lather Machine brings barbershop quality shaving lather to your morning shave routine, without aerosol propellants or harmful chemicals. All-natural liquid refill pods drop in and swap out in seconds.

Engineering + Design

Impel Studio developed a productionized mechanical design of the internal components to support the vision of a compact, smart grooming appliance, as well as providing industrial design services.

Whipped to a Froth

Inside, a miniature conical auger spins at 10,000 RPM, incorporating microscopic air bubbles in to the heated liquid shaving solution, creating a uniquely rich, warm lather. Painstaking research and iterative testing of rapid prototypes resulted in a motor and auger configuration that’s compact while still powerful enough to produce the thickest lather.

So Hot Right Now

A finely aerated lather is quite insulative, so the aerating chamber is cast from a thermally conductive alloy, and is wrapped with an efficient thin-film type electronic heating element. This keeps the internal liquid and air inlet tubes at a toasty 120°F, so the machine is always hot and ready. To reduce energy consumption the outer body is double walled stainless steel.

Closed System

Classic hot lather machines have an open-aired, carbureted design, prone to clogs without daily maintenance. The key to making the device user friendly for use at home was to envision it as a modernized, soap-injected, closed system. An innovative valve lever pinches the exit tube shut to positively seal the system from internal evaporation. A crystal clear pod cover seals tightly with a gasket.

Prototyping & Development

Computational Fluid Dynamics and computer simulation of the aeration chamber design being inexpedient at the time, our process of 3D printing, testing, and making informed redesigns allowed us to quickly map the constraints of the auger. We tested various helical profiles, auger shape, pitch and taper, as well as liquid/air inlet positions and flow rates. This exploration determined the optimal architecture for the smallest possible footprint.