This optional cylinder is for use when roasting small beans such as Yemen Mocha, some Ethiopian natural varieties like Harrar and a few other beans that are either irregularly sorted or mixtures of smaller sizes. The grid in the photo above is the original; the new one looks and works the same except for the spacing of the grid.

The openings or spacing of the grid is .157 inch vs the standard grid's .187 inch. You have to look hard to see the difference but the amount of chaff the one retains versus the other is major. You should only use the Small Grid Cylinder when you are roasting small beans! Do not use it for all coffees. Doing so will retain chaff within the cylinder which will affect the taste of the coffee and may cause a fire. The original grid was designed so chaff could escape and beans be retained; the new Small Cylinder Grid does the same thing, just does it for smaller beans.

Many Behmor home roasters will not need this optional and additional cylinder so please consider whether you intend to roast the smaller varieties. If you expect to do so than this option is for you. The cost is very modest and is another confirmation of Behmor's pro-consumer position. The Behmor will continue to come with the original grid cylinder as standard. You cannot get this cylinder instead of the original. It is only available separately.