A feeder device for feeding powder, comprising a feeding channel with a downstream end, said feeding channel comprising at least one conveying element for conveying the powder material to the downstream end, and a rotatable exit element provided at the downstream end of the feeding channel, said rotatable exit element comprising an annular portion defining exit openings defined by powder engaging edges, wherein the rotatable exit element is positioned transversally outside the feeding channel in a proximity of the downstream end of the feeding channel, wherein the feeding channel has a first, inner diameter and the rotatable exit element has a second, outer diameter, and wherein the second, outer diameter is equal to or larger than the first inner diameter.