Shop fabrication · Lesson 1 of 6

Flat patterns and blank width

How AFS sizes the flat strip a profile is cut from, how hems add to it, and what bend allowance and the K-factor change.

8 min · 10 slides · 5 questions

Slide 1 of 10

The blank

Every profile starts as a flat strip of sheet, the blank, cut to width before it is bent.

Its width across the bends is the girth.

Drip Edge from the FlashDraft library. Unfold its lettered legs end to end and you have its blank.Open in the Detail Atlas →

Sources