工具与资源lcamtuf.coredump.cx编辑精选
CNC 加工、制模与树脂浇铸的游击指南
Guerrilla guide to CNC machining, mold making, and resin casting
2012 — 2021，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
这是 Michal Zalewski 写的一份关于 CNC 加工、模具制作和树脂浇铸的指南（篇幅接近一本书），面向家庭制造和业余机器人等动手项目，讲解相关工艺与工具。评论普遍认为它内容全面、实用，多年后仍是该领域的经典参考。
为什么经久不衰：它系统而免费地覆盖了从加工到制模、浇铸的完整流程，对家庭制造和机器人爱好者长期有参考价值。
HN 评论精选
指南对家庭制造和业余机器人价值极高。
这份指南（或者说书？）怎么点赞都不够。我认为 Michal 这项全面的工作，对家庭制造和高质量业余机器人所做的贡献，超过所有 3D 打印“革命性”“颠覆性”公司加起来。
pvarangot查看英文原文
This guide (or book?) couldn't be upvoted enough. With his comprehensive work I believe Michal has done more for home manufacturing and high quality hobbyist robotics than all 3d printing "revolutionary" and "disruptive" companies combined.
建议创客共享昂贵的机床和工具。
创客运动里有没有合作模式——那种神秘的“设备齐全的机加工车间”以合作社或订阅方式存在？我觉得这很像飞机所有权：很少飞行员拥有整架飞机，为什么每个创客都要拥有所需的一切？
lifeisstillgood查看英文原文
Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise
从机器人套件到定制加工件跨度大，齿轮采购和配套很麻烦。
齿轮部分真短，但要覆盖的太多也不能怪他。如果你玩过机器人，可能发现从 Actobotix 这类套件到定制零件是巨大的台阶。用已经解决齿轮、连杆、电机、兼容性等大量猜测的套件/框架要容易得多。尤其齿轮在网上采购极麻烦，即使找到对的齿轮，还需要轮毂和轴，然后遇到最小起订量、不零售、海外采购等问题。我甚至能使用很棒的机加工车间，但我没有机械师。
SavantIdiot查看英文原文
Wow, really short section on gears. But there is so much to cover I can't blame it. If you've ever dabbled in robotics, you've probably found it is an enormous step function from kits like Actobotix [1] to custom parts. It is infinitely easier to use kits or frameworks that have already taken a LOT of the guesswork out of gears, linkages, motors, compatibility, etc. Especially gears, they are an enormous pain in the ass to source online, and even when you find the right gears, you still need hubs and axles, and then you hit min volume issues, non retail sales, overseas... I even have access to a phenomenal machine shop, but what I don't have is a machinist. (There are a few that mill around (pun intended) but they are mostly introverted decent guys that don't really want to help a noob.) [1] https://www.servocity.com/actobotics/
3D 打印精度进步大，但 CAD/CAM 学习曲线仍是障碍。
关于树脂浇铸和 CNC，要注意 2015 年以来 3D 打印的演进。如今便宜 3D 打印机能做出惊人的细节，似乎比 CNC 少很多脏乱。不久前我拿到树脂 3D 打印机，精度让我震惊。但至少对我来说，整个领域有个大问题——第三点“掌握 CAD 和 CAM”。轻说我很烂。我用 Blender（100% Linux 用户），在布局建模和雕刻等模式间切换常让我暴怒。我找不到菜单或模式的规律，每次尝试都变成两小时谷歌和 YouTube 教程。我想这是因为我太习惯 CLI 工具，几乎不离开命令行世界。
axegon_查看英文原文
One thing to note when it comes to resin casting and cnc is the 3d printing evolution since 2015. The amount of detail you can get from an inexpensive 3d printer these days is astonishing and it seems like less far less messy than a cnc. Not that long ago I got a resin-based 3d printer and I was blown away by the prescision. That said, for me at least, there is a big problem in that entire field - the third point - "Mastering CAD and CAM". To put it lightly I really suck at it. I am using Blender(100% linux user) and having to switch between layout modeling and sculpting(etc.) often puts me in a Hulk mode rage. I can't find a pattern in the menus or modes and everything I try to do ends up being 2 hours of googling and youtube tutorials. Which I reckon is me being too used to cli-tools and hardly ever going outside the cli world(if it weren't for browsers and the modern web which cannot work without js, I'd have probably removed my desktop environment altogether).
历次讨论
同类还值得读
直接在浏览器中启动 Linux 内核
Boot a linux kernel right inside your browser.
Fabrice Bellard 的 JSLinux 页面，用 JavaScript 在浏览器里启动一个 Linux 内核，并提供一个可交互的终端环境。
工具与资源上首页 5 次 · 2011–2025bellard.orgHacker News 未公开功能与行为清单（2018）
A List of Hacker News's Undocumented Features and Behaviors (2018)
数据科学家 Max Woolf 整理的 Hacker News 未公开功能与行为清单，涵盖投票机制、排名算法、账号惩罚等社区运作细节。
工具与资源上首页 5 次 · 2019–2025github.comMapSCII：在终端中用盲文和 ASCII 渲染地图
MapSCII – Braille and ASCII map renderer for the console
MapSCII 是一个在命令行终端里渲染地图的开源工具，用盲文字符和 ASCII 字符把地理数据画成可交互浏览的字符地图。
工具与资源上首页 5 次 · 2017–2025github.com顶尖大学的免费在线课程
Free Online Courses from Top Universities
Open Culture 整理的一份免费在线课程合集，汇集了全球顶尖大学（如 MIT、斯坦福、耶鲁等）向公众开放的网络课程资源，涵盖音频、视频等多种形式。
工具与资源上首页 5 次 · 2010–2022openculture.com淘气字符串：容易引发用户输入问题的字符串清单
Naughty Strings: A list of strings likely to cause issues as user-input data
一个 GitHub 仓库，收录了大量容易让程序出问题的用户输入字符串，如特殊字符、emoji、SQL 注入片段、系统命令等，供开发者用于测试输入处理逻辑。
工具与资源上首页 4 次 · 2015–2020github.com