The invention relates to an additive manufacturing machine by powder bed deposition, the machine comprising a work surface, a work area, a device for depositing a layer of powder on the work area and a source of heat or energy used to selectively consolidate a powder layer deposited on the work area, the powder layer deposition device comprising a movable powder receiving element moving relative to the work surface and to proximity to the working area, a device for distributing a bead of powder on the mobile element, and a device for spreading the bead of powder from the mobile element towards the working area, at least part of the upper surface (S28, S128) of a movable member is located above the upper surface (S18) of the worktop and / or at least part of the upper surface (S28, S128) of a movable member is located below the upper surface (S18) of the working plane vail. Figure for the abstract: Fig. 14
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