# Sheet Metal Layout: Patterns — Cone, elbow & duct flat layout

> Cone, elbow & duct flat layout (iPhone/iPad app by Gun woo Kim.)

- Source: https://appshunter.io/ios/app/sheet-metal-layout-patterns/id6791592420 (this page in markdown: same URL + `.md`)
- Developer: [Gun woo Kim](https://appshunter.io/developer/1700263119)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 29 MB
- Languages: English
- Released: 2026-07-23
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/sheet-metal-layout-patterns/id6791592420/reviews.md

## What is Sheet Metal Layout?

Mark out the flat pattern, cut once. Sheet Metal Layout develops the patterns fabricators lay out every day — cones, miter elbows, tees, reducers and square-to-round transitions — right on your phone, fully offline.

PATTERNS THAT MATTER
• Miter elbow — two-piece, any angle
• Cone and frustum — full radial-line development with sector angle
• Concentric and eccentric reducers — triangulated true lengths
• Round offsets and lobster-back (segmented) elbows
• Equal and unequal tees — branch saddle cut depths
• Square to round — corner true lengths, laid out

LAID OUT RIGHT
• Every pattern gives you key dimensions, a schematic and a numbered ordinate / true-length table
• A step-by-step "How to lay out" list walks the parallel-line, radial-line or triangulation construction
• Copy any ordinate table as text to keep with your job notes

ACCURATE TO THE METAL
• Layout follows the neutral fibre — set the K-factor (mid-wall by default) so bend allowance is built in, not guessed
• Pipe mode auto-fills outside diameter and wall from a built-in nominal pipe-size table (½"–12", schedule 40/80)
• Sheet mode takes diameter and thickness directly

BUILT FOR THE SHOP AND THE FIELD
• Inch (fractions to 1/16") or millimetre — one tap to switch
• 100% offline — works anywhere, no signal needed
• Big controls, screen stays awake, no account
• Your inputs never leave your phone

ONE-TIME PURCHASE
The free version includes the miter elbow, cone / frustum and reducer patterns — full functionality, never crippled. Sheet Metal Layout Pro is a single one-time purchase that unlocks the remaining five patterns.

No subscription. No ads. No feature removals. Ever.

Reference layout only. Add your own seams, laps and material allowance, and always verify before cutting.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sheet Metal Pro | $12.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-08-03

Stability and reliability improvements.

### 1.0 — 2026-07-23

No release notes.

## More apps by Gun woo Kim

- [picswap - picture swap](https://appshunter.io/ios/app/picswap-picture-swap/id6456039579)
- [mubo - dance formation editor](https://appshunter.io/ios/app/mubo-dance-formation-editor/id6753949227)
- [LinePrompter](https://appshunter.io/ios/app/lineprompter/id6784582453)
- [Conduit Bender: Bend Calc](https://appshunter.io/ios/app/conduit-bender-bend-calc/id6786548483)
- [Tape Calc: Feet Inch Fraction](https://appshunter.io/ios/app/tape-calc-feet-inch-fraction/id6786612707)
- [Pipe Calc: Pipefitter Offsets](https://appshunter.io/ios/app/pipe-calc-pipefitter-offsets/id6786981763)

All apps by Gun woo Kim: https://appshunter.io/developer/1700263119

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*