---
_id: '13265'
abstract:
- lang: eng
  text: In this study, we propose a computational framework for optimizing the continuity
    of the toolpath in fabricating surface models on an extrusion-based 3D printer.
    Toolpath continuity is a critical issue that influences both the quality and the
    efficiency of extrusion-based fabrication. Transfer moves lead to rough and bumpy
    surfaces, where this phenomenon worsens for materials with large viscosity, like
    clay. The effects of continuity on the surface models are even more severe in
    terms of the quality of the surface and the stability of the model. We introduce
    a criterion called the one–path patch (OPP) to represent a patch on the surface
    of the shell that can be traversed along one path by considering the constraints
    on fabrication. We study the properties of the OPPs and their merging operations
    to propose a bottom-up OPP merging procedure to decompose the given shell surface
    into a minimal number of OPPs, and to generate the “as-continuous-as-possible”
    (ACAP) toolpath. Furthermore, we augment the path planning algorithm with a curved-layer
    printing scheme that reduces staircase defects and improves the continuity of
    the toolpath by connecting multiple segments. We evaluated the ACAP algorithm
    on ceramic and thermoplastic materials, and the results showed that it improves
    the fabrication of surface models in terms of both efficiency and surface quality.
acknowledgement: 'This work was supported in part by grants from the NSFC (61972232),
  Science and Technology Program of Shenzhen, China (CJGJZD20200617102202007). '
article_number: '26'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Fanchao
  full_name: Zhong, Fanchao
  last_name: Zhong
- first_name: Yonglai
  full_name: Xu, Yonglai
  last_name: Xu
- first_name: Haisen
  full_name: Zhao, Haisen
  id: fb7f793a-80d1-11eb-8869-d56e5b2a8ff4
  last_name: Zhao
  orcid: 0000-0002-6389-1045
- first_name: Lin
  full_name: Lu, Lin
  last_name: Lu
citation:
  ama: Zhong F, Xu Y, Zhao H, Lu L. As-Continuous-As-Possible extrusion-based fabrication
    of surface models. <i>ACM Transactions on Graphics</i>. 2023;42(3). doi:<a href="https://doi.org/10.1145/3575859">10.1145/3575859</a>
  apa: Zhong, F., Xu, Y., Zhao, H., &#38; Lu, L. (2023). As-Continuous-As-Possible
    extrusion-based fabrication of surface models. <i>ACM Transactions on Graphics</i>.
    Association for Computing Machinery. <a href="https://doi.org/10.1145/3575859">https://doi.org/10.1145/3575859</a>
  chicago: Zhong, Fanchao, Yonglai Xu, Haisen Zhao, and Lin Lu. “As-Continuous-As-Possible
    Extrusion-Based Fabrication of Surface Models.” <i>ACM Transactions on Graphics</i>.
    Association for Computing Machinery, 2023. <a href="https://doi.org/10.1145/3575859">https://doi.org/10.1145/3575859</a>.
  ieee: F. Zhong, Y. Xu, H. Zhao, and L. Lu, “As-Continuous-As-Possible extrusion-based
    fabrication of surface models,” <i>ACM Transactions on Graphics</i>, vol. 42,
    no. 3. Association for Computing Machinery, 2023.
  ista: Zhong F, Xu Y, Zhao H, Lu L. 2023. As-Continuous-As-Possible extrusion-based
    fabrication of surface models. ACM Transactions on Graphics. 42(3), 26.
  mla: Zhong, Fanchao, et al. “As-Continuous-As-Possible Extrusion-Based Fabrication
    of Surface Models.” <i>ACM Transactions on Graphics</i>, vol. 42, no. 3, 26, Association
    for Computing Machinery, 2023, doi:<a href="https://doi.org/10.1145/3575859">10.1145/3575859</a>.
  short: F. Zhong, Y. Xu, H. Zhao, L. Lu, ACM Transactions on Graphics 42 (2023).
date_created: 2023-07-23T22:01:13Z
date_published: 2023-03-17T00:00:00Z
date_updated: 2023-12-13T11:34:59Z
day: '17'
department:
- _id: BeBi
doi: 10.1145/3575859
external_id:
  arxiv:
  - '2201.02374'
  isi:
  - '001018739600002'
intvolume: '        42'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2201.02374
month: '03'
oa: 1
oa_version: Preprint
publication: ACM Transactions on Graphics
publication_identifier:
  eissn:
  - 1557-7368
  issn:
  - 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: As-Continuous-As-Possible extrusion-based fabrication of surface models
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...