Clay Non-Planar Printing of Overhangs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21450%2F23%3A00368737" target="_blank" >RIV/68407700:21450/23:00368737 - isvavai.cz</a>
Result on the web
<a href="http://dare-conf.eu/publication/DARe2023-book.pdf" target="_blank" >http://dare-conf.eu/publication/DARe2023-book.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Clay Non-Planar Printing of Overhangs
Original language description
While the CAD model is being prepared for 3D printing, it is sliced into layers. Contrary to planar slicing, where an object is cut by horizontal planes and then a curve for the toolpath is generated from these intersections, non-planar slicing uses twisted planes for object cutting. It brings freedom to toolpath creation and each object can be printed in adjusted layers that reflect its geometry. Benefits of such printing are being explored in plastics and involve enhanced surface finish, cracking reduction and ability to print cantilevers. This paper examines printability of overhangs using clay non-planar printing. Basic potter's clay, from an art supplies shop was mixed with additional water and let in room temperature for one day. Desktop FDM delta printer was retrofitted with a clay printhead, its extruder motor was geared into a 19:1 ratio and connected to the ram. This ram pushes clay from a tank and nylon tube through a 4mm thick nozzle. Set of vase-like objects was designed, each with a different overhang. Starting at 10 degrees and ending at 70 degrees, in increments of 5 degrees. Objects were modelled in Rhinoceros software and G-code for both planar and non-planar print was generated in Grasshopper. Each of those objects were printed twice, once planarly and once non-planarly. During the printing buckling and collapsing of printed objects was monitored. Non-planar printing improves buildability and reduces deformation of overhangs. Right after the print and after they got dry, objects were measured for their deformation. Shrinkage during the drying was measured to be 12,5%. Ideal toolpath for non-planar printing seems to be the one having layers perpendicular to the overhang. Model evaluation and non-planar printing data preparation is being discussed in the paper. If used on a large scale, non-planar printing may allow printing walls with holes for plumbing, or even printing vaults or bridges.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20103 - Architecture engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Digital Architectural Research - DARe
ISBN
978-83-67185-54-7
ISSN
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e-ISSN
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Number of pages
16
Pages from-to
46-61
Publisher name
Bialystok University of Technology Publishing Office
Place of publication
Białystok
Event location
Bialystok
Event date
Mar 1, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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