I kept hitting the ceiling in Tinkercad, so I built a browser CAD that picks up where it leaves off

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I kept hitting the ceiling in Tinkercad. The next step up is Fusion or Onshape, which means an install, an account, and a real learning curve, and I just wanted to make the parts I had in my head without any of that. So I built OwlCAD, a parametric 3D modeler that runs entirely in the browser. What's different: Parametric history, so changing a dimension later rebuilds the model instead of making you redo the work. Print-aware. Most of what I make gets printed, so clearance presets for press fits and slip fits are built in, and overhang surfaces get tinted while you'

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AI 分析

痛点：Tinkercad 用户做出稍复杂模型就撞到功能天花板，升级到 Fusion/Onshape 又需要安装、账号和陡峭学习曲线，缺少免安装、免账号且对 3D 打印友好的浏览器参数化 CAD。

目标用户：使用 Tinkercad 的 3D 打印爱好者、创客、教育用户，以及需要参数化建模但不想安装专业 CAD 的独立开发者或小团队。

证据：I kept hitting the ceiling in Tinkercad. The next step up is Fusion or Onshape, which means an install, an account, and a real learning curve... The editor is free. There's an optional paid AI generation feature, but everything above is free.

变现：免费编辑器 + 付费 AI 生成/高级云功能/团队协作/打印预设市场；也可考虑一次性买断或 Pro 订阅。

MVP：2周内可做极简浏览器参数化建模器：草图 + 拉伸/布尔 + 尺寸驱动历史树，内置 3D 打印间隙预设和悬垂提示，支持 STL/3MF 导出；先不做复杂 NURBS/STEP，用 Three.js 加简单 CSG 库验证核心交互。

竞品：Tinkercad、Autodesk Fusion、Onshape、Shapr3D、FreeCAD、CAD.space

摘要：独立开发者因 Tinkercad 功能天花板而做了浏览器参数化 CAD OwlCAD，主打免安装/免账号、参数化历史、3D 打印友好和默认私有，编辑器免费，仅 AI 生成收费。这验证了 Tinkercad 升级路径的痛点，但付费意愿和需求规模尚未被数据证明，且 CAD 赛道竞品众多。