Technical Specification: Segmented Bowl Ring & Miter Angle Calculator

Overview

A precision-focused, client-side utility tool designed for woodturners to calculate the dimensions and cutting angles required for segmented bowl rings. This application eliminates the need for manual trigonometric calculations, reducing waste and increasing joint accuracy.

Core Features

• Live Dynamic Calculation: Results update instantly as the user modifies input fields.
• Input Parameters:
  • Number of Segments (e.g., 6, 8, 12, 16, 24).
  • Desired Finished Outer Diameter (inches/millimeters).
  • Board Thickness (for calculating required width).
• Outputs:
  • Miter Saw Angle (degrees).
  • Exact Segment Length (outside-to-outside).
  • Required Board Width (minimum width to accommodate the cut).
• Copy-to-Clipboard: Quick action buttons to copy calculated values for workshop notes.
• Constraint Validation: Prevents invalid inputs (e.g., less than 3 segments) and provides clear, user-friendly error feedback within the UI.

User Interface & Layout

• Header: Clean, minimalist title "Segmented Ring Calculator" with a brief description.
• Input Section: A structured card layout featuring sliders and number inputs for intuitive data entry.
• Results Section: A high-visibility area displaying the primary Miter Angle and Segment Length, styled with large, clean typography.
• Diagram Area: A static CSS-generated visual representation showing the relationship between segment, diameter, and miter angle for better user comprehension.

Design System (Light Mode Only)

• Color Palette: Professional clean aesthetic using white (#FFFFFF), slate grays (#F8FAFC, #E2E8F0), and an accent 'forest' green (#16A34A) for call-to-action buttons and positive results.
• Typography: Sans-serif fonts (e.g., Inter or system UI stack) for maximum readability.
• Micro-interactions: Smooth CSS transitions on hover states for inputs and buttons. No distracting animations.

Technical Implementation Rules

• Architecture: Single HTML file containing all HTML5, CSS3, and Vanilla JavaScript.
• State Management: All application state is held in memory variables. NO localStorage, sessionStorage, or IndexedDB is permitted.
• Performance: No build step. Use CDN links for any necessary icon libraries (e.g., FontAwesome) or CSS frameworks (e.g., Tailwind via CDN).
• Responsiveness: Fluid container widths using CSS Flexbox and Grid. Must be fully usable on both mobile phones and desktop browsers.
• Sandboxing: Code must be compatible with a null-origin iframe environment. Avoid all popup-style interactions (alert/confirm/prompt); use custom HTML modals if user confirmation is required.