# Guides on how garments get made.

Short guides on technical pages, measurements, materials, grading and sample approval, through to sending a design to a factory. Each one answers a single question.

## Tech packs

- [What is a tech pack?](https://truile.com/guides/what-is-a-tech-pack.md): The pages a factory sews from, written so the style can be cut and finished without guesswork.

- [How to make a tech pack](https://truile.com/guides/how-to-make-a-tech-pack.md): A working order for turning a sketch and a handful of decisions into pages a factory can sew from.

- [What does a tech pack look like?](https://truile.com/guides/what-does-a-tech-pack-look-like.md): A tech pack is a small stack of pages, each answering a different factory question, rather than one drawing.

- [What is a garment spec sheet?](https://truile.com/guides/what-is-a-garment-spec-sheet.md): A garment spec sheet records finished measurements for the base size at agreed points on the garment.

- [What is a BOM in apparel?](https://truile.com/guides/what-is-a-bom-in-apparel.md): An apparel BOM lists the materials and trims in a garment, with references, placements and quantities.

## Pattern grading

- [What is pattern grading?](https://truile.com/guides/what-is-pattern-grading.md): How one base size becomes a size run, and what a factory needs written down to do it your way.

## Patterns and sizing

- [What are grade rules?](https://truile.com/guides/what-are-grade-rules.md): Grade rules describe the steps from an approved base size to the rest of the size range.

## Drawings

- [What are technical flats?](https://truile.com/guides/what-are-technical-flats.md): The drawing a factory measures, cuts and sews against, and why it looks nothing like the sketch it came from.

## The role

- [What is a technical designer?](https://truile.com/guides/what-is-a-technical-designer.md): The person between the design and the factory, who writes down how a garment is made and checks that it was.

## Samples and the factory

- [What is a 3D virtual sample?](https://truile.com/guides/what-is-a-3d-virtual-sample.md): A 3D virtual sample makes the garment visible as a form so its look and fit can be reviewed before fabric is cut.

- [How to send a design to a factory](https://truile.com/guides/how-to-send-a-design-to-a-factory.md): Send the factory a coherent tech pack after approving the garment, with the current version and any open questions identified.