With the NutriBullet extractor (600 W), you can also chop nuts and seeds without additional liquid. The appliance has a special cross blade and a high speed, which makes it possible to chop and crush solid ingredients such as nuts. However, for very solid or dry ingredients such as nuts or dates, it is recommended to add some liquid if necessary to support the mixing performance and achieve a better result. Liquid is not absolutely necessary, but helpful for even processing.

According to the operating instructions and YouTube video, which is cited as the source in the automatically generated reply, the appliance should never be used without liquid as it can damage the blades. There would be a flat blade attachment for grinding, but I can't find the original or any reputable sites to buy it. I have contacted NutriBullet about this. Let's see if they have a solution ready.