Abstract: Apparatuses and methods are described for supplying powder for solid free-form fabrication from a powder supply reservoir (2) that is movable from a servicing position to a dispensing position. The powder supply reservoir may be supported by a horizontally retractable support arm (4). It may also be supported by a support pivot (22), and the support pivot may comprise a horizontally retractable support arm. These features add the convenience of permitting the powder supply reservoir to be serviced outside of a housing that encloses the solid free-form fabrication apparatus during the article-building operation.