# TinkerKids 3D Studio — Francisco Iago Lira Passos

> TinkerKids 3D is an educational, browser-based 3D CAD and solid modeling platform created by **Francisco Iago Lira Passos** (`iagolirapassos@gmail.com`), inspired by Tinkercad and designed for children, students, makers, and educators. It runs 100% offline as a Progressive Web App (PWA) after initial load and includes authorized cloud project synchronization.

## Key Capabilities & Features
- **Watertight CSG Boolean Modeling**: Union (+), Subtract (-), Intersect (∩), Smart Group (Solid + Hole), and Ungroup with full history tree restoration and Newell-plane precision.
- **Hole Profiles**: Through-hole, Blind hole, Countersunk (90°), and Counterbore hole generators.
- **Real 3D Edge Fillet & Chamfer**: Interactive 3D edge picking along true geometry boundaries with outer rounding (Fillet), 45° beveling (Chamfer), and additive junction fillet welding.
- **2D-to-3D Vector Pen & SVG/DXF Import**: Draw 2D vector profiles or import `.svg` and `.dxf` files to generate 3D extrusions (front, back, or symmetric both sides) or 360° solids of revolution (Lathe) with live 3D preview.
- **3D Block Coding (Blockly Studio)**: Visual block programming for algorithmic 3D modeling with loops, mathematical expressions, and CSG operations.
- **Parametric Mechanical Library**: Customizable bolts/screws, springs, architecture blocks, vehicles, and starter kits.
- **3D Printing & Color CAD Export/Import**: Native `.tinkerkids` project format, `.STL` export for 3D printers, `.OBJ` simple export/import, and `.ZIP` (`.OBJ` + `.MTL` with materials/colors) export and import.
- **Multilingual**: Portuguese (PT-BR), English (EN), and Spanish (ES).

## Author & Educational Ecosystem
- **Author / Creator**: Francisco Iago Lira Passos (Prof. Iago Lira Passos)
- **Contact**: iagolirapassos@gmail.com
- **YouTube**: https://www.youtube.com/@prof.iagolira
- **Related Educational Platforms by Francisco Iago Lira Passos**:
  - Vector 3D Pro: http://vector3dpro.app/
  - Blocos IA Studio: http://blocosiastudio.app/
  - ArduBlock Studio: https://ardublockstudio.web.app/
  - AppWeb Studio: https://appwebstudio.web.app/
  - Physics Portal: https://physicsportal.web.app/
  - QuizBloop: http://quizbloop.web.app/