Formlabs, Inc.

Harvard College

Connor Evans

Joseph M Johnson

Xiaoliang Sunney Xie

Luke Plummer

Feruz Ganikhanov

Carlos Ruiz-Vargas

Robert Morgan

Maria Rosa Ruiz

Techniques are described for consistently moving powder from a hopper into a trough for subsequent delivery into a build area of an additive fabrication system. A powder delivery apparatus may comprise a hopper, a trough, and a doser. The doser may be configured to rotate about an axis and may include a recess that, when the doser is rotated about the axis, travels into and out of the hopper and into and out of the trough. As a result, when powder is present in the hopper, the recess may carry powder from the hopper to the trough when the doser rotates. The trough and doser may be configured so that when the trough contains the desired amount of powder for recoating, the doser does not transfer additional material from the hopper into the trough. As a result, the amount of powder in the trough may be self-regulating.

Techniques for powder delivery in additive fabrication and related systems and methods

Growing community of inventors

Somerville, MA, United States of America

Connor Evans