On the indiegogo page, they explain they were able to create a really compact heater thanks to "Direct Metal Laser Sintering". The text reads : " The heater is one of the most innovative elements of Grasshopper. Using Direct Metal Laser Sintering, (a type of metal 3D printing), we've created an extremely compact heat exchanger with very little flow resistance." " The Shell's spiral design squeezes a 36 millimeter-long heating pathway into only 4 millimeters of space".
But since the pathway is so short, what intrigues me is how the air is not too hot ! In every videos I could watch, they were all coughing really hard. But that's often the case with other vapes too, especially when people want to show that they can pull big clouds out of it.
Well, really eager to read reviews of this beauty when it comes out, it looks definitely too perfect