European four in one (E4-1)
European four-in-one is one of the easiest base patterns to learn.
Every middle ring passes through four outer rings, which is where the name comes from.
The mail pattern was commonly used across medieval Europe.
Strips of E4-1 are the starting point for several decorative chains:
- Box chain (with or without captive beads)
- Dragonback
I use an aspect ratio of 5.3
Ratios from 4 to 7 are recommended.
A lower ratio gives a tighter, stiffer weave.
A higher ratio is faster, more flexible and leaves larger gaps.
Some tutorials can be found at:
Video Tutorial - VGPianoGuy ,
CGI - Chainmail Joe ,
Variations - Mailleartisans.org.