Print Email Facebook Twitter Protocols for minimizing the leading edge bulge in stereolithography Title Protocols for minimizing the leading edge bulge in stereolithography Author Kozhevnikov, A. Kunnen, R.P.J. van Baars, G.E. Clercx, H.J.H. Publication year 2021 Abstract The leading edge bulge is a known defect in stereolithography with free-surface recoating. It is a resin excess that remains after deposition over a deep-to-shallow topographic transition, the leading edge of the cavity. In this paper, we explore an approach based on changing the gap between the recoating blade and the previously cured layer to minimize the local resin surface unevenness by suppressing resin excess. By means of numerical simulations, different blade trajectory configura-tions have been considered. The results show that the amplitude of the leading edge bulge can be reduced to a minimal value by a blade actuation protocol of lowering then raising the blade as it moves over the leading edge, without increasing the recoating process time. Subject Fluid dynamicsLayer depositionLeading edge bulgeStereolithographySurface topography To reference this document use: http://resolver.tudelft.nl/uuid:5c1b6d77-9db9-49e9-a6e9-46dd3f1ff1bc DOI https://doi.org/10.1007/s40964-021-00234-x TNO identifier 962261 Publisher Springer Nature ISSN 2363-9512 Source Progress in Additive Manufacturing Document type article Files To receive the publication files, please send an e-mail request to TNO Library.