Module 04 · Preparing Designs and Jobs for Desktop 3D Printing & Printing Services桌面 3D 打印与打印服务：设计及作业准备
Module 4 Overview模块 4 概述
Module 4: Entering the Digital Domain - Preparing Designs and Jobs for Desktop 3D Printers & Printing Services 模块 4：进入数字领域 - 为桌面 3D 打印机和打印服务准备设计和作业
Overview 概述
We will take a tour through typical design documents and digital object files, the kinds of mesh files used for 3D printing, and class of software tools you use to prepare your print jobs, and then pay special attention to the structure of the g-code job file at the end of the software pipeline that provides the procedural instructions that the desktop 3D printer hardware systems follows to fabricate a physical object.
我们将游览典型的设计文档和数字对象文件，用于 3D 打印的网格文件类型，以及您用于准备打印作业的软件工具类别，然后特别关注软件管道末尾的 g-code 作业文件结构，该文件提供桌面 3D 打印机硬件系统遵循的程序指令以制造物理对象。
We will introduce you to repositories for digital design and mesh files that might get you close to where you are going, software tools for checking and fixing your digital models for printing, as well as a detailed introduction to a slicer, Ultimaker Cura.
我们将向您介绍数字设计和网格文件的存储库，这些存储库可能让您接近目标位置，以及用于检查和修复打印数字模型的软件工具，还有对切片器 Ultimaker Cura 的详细介绍。
Time 时间
This module should take approximately 5.2 hours of dedicated time to complete, with its videos and assignments.
本模块完成需要大约 5.2 小时的专用时间，包括其视频和作业。
Lessons 课程
The lessons for this module are listed below (with assignments in bold italics):
本模块的课程如下（粗体斜体表示作业）：
| Lesson Title 课程标题 | Estimated Time Required 所需估计时间 |
|---|---|
| Module 4 Overview 模块 4 概述 | 10 minutes 10 分钟 |
| Module 4 Section 1 Lecture Videos 模块 4 第 1 节 讲座视频 |
59 Minutes 59 分钟 |
| Practice Quiz 4.1 实践测验 4.1 | 5 minutes 5 分钟 |
| Module 4 Section 2 Lecture Videos 模块 4 第 2 节 讲座视频 |
52 Minutes 52 分钟 |
| Practice Quiz 4.2 实践测验 4.2 | 5 minutes 5 分钟 |
| Module 4 Discussion 模块 4 讨论 | 30 minutes 30 分钟 |
| Module 4 Peer Review Assignment 模块 4 同行评审作业 |
120 minutes 120 分钟 |
| Module 4 Quiz 模块 4 测验 | 30 minutes 30 分钟 |
Goals and Objectives 目标和目标
After you actively engage in the learning experiences in this module, you should be able to:
在您积极参与本模块的学习体验后，您应该能够：
- Identify the file formats and elements of a digital object.
识别数字对象的文件格式和元素。 - Recognize a range of sources for obtaining pre-existing digital models suited to 3D printing.
识别适用于 3D 打印的现有数字模型的多种来源。 - Demonstrate the process of downloading a digital model and creating a gcode file
演示下载数字模型并创建 gcode 文件的过程 - Explain the role 3D printing control software plays to translate digital models into g code to be carried out by the 3D printer
解释 3D 打印控制软件在将数字模型转换为 3D 打印机执行的 g 代码中所起的作用 - Practice importing meshes and preparing print jobs using Ultimaker Cura
练习使用 Ultimaker Cura 导入网格并准备打印作业
Key Phrases/Concepts 关键词/概念
Keep your eyes open for the following key terms or phrases as you interact with the lecture videos and complete the activities.
保持关注以下关键词或短语，在观看讲座视频和完成活动时。
- Digital Design File 数字设计文件
- Mesh File 网格文件
- Job File 工作文件
- Slicing Software 切片软件
Guiding Questions 引导问题
Develop your answers to the following guiding questions while watching lecture videos and working on assignments throughout the module:
在观看课程视频和完成模块作业的过程中，针对以下指导性问题发展你的答案：
- How does the digital file translate into g-code for the printer to interpret?
数字文件如何转换为打印机可解释的 g-code？ - What information would be useful to include in a digital object beyond surface topographic information?
在数字对象中，除了表面地形信息外，还应包含哪些有用的信息？ - What limitations are inherent of digital objects and modification of digital objects?
数字对象及其修改固有的局限性有哪些？ - What are the most important parameters to consider when preparing a file in a slicer to print?
打印切片器中准备文件时，最重要的参数有哪些要考虑？ - In what ways has the kind of topographical/geometric information included in a digital object been shaped by limitations in the software tools to distribute and modify these models?
数字对象中包含的这种地形/几何信息在软件工具的局限下是如何被塑造的？ - What advantages does editing g-code have when compared to modifying a digital object?
编辑 G 代码与修改数字对象相比有哪些优势？
Getting and Giving Help 获取与给予帮助
You can get/give help via the following means:
您可以通过以下方式获得/提供帮助：
- Use the Learner Help Center to find information regarding specific technical problems. For example, technical problems would include error messages, difficulty submitting assignments, or problems with video playback. If you cannot find an answer in the documentation, you can also report your problem to the Coursera staff by clicking on the Contact Us! link available on each topic's page within the Learner Help Center.
使用学习帮助中心查找有关特定技术问题的信息。例如，技术问题包括错误信息、提交作业困难或视频播放问题。如果在文档中找不到答案，您还可以通过点击学习帮助中心每个主题页面上的“联系我们！”链接，向 Coursera 工作人员报告您的问题。 - Use the Content Issues forum to report errors in lecture video content, assignment questions and answers, assignment grading, text and links on course pages, or the content of other course materials. University of Illinois staff and community TAs will monitor this forum and respond to issues.
使用“内容问题”论坛来报告讲座视频内容、作业问题及答案、作业评分、课程页面上的文本和链接，或其他课程材料的错误。伊利诺伊大学的工作人员和社区助教将监控此论坛并回应问题。