Compendium

European 4 in 1 chainmail pattern

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.

Base pattern - cgi

The example 3D-Model uses a ratio of 8.
Middle rings are displayed in bronze.
Outer rings are displayed in silver.
Chain four-in-one unit in the air.

Thread four closed rings onto one open ring.
Close it to make a single four-in-one unit.

Chain four-in-one unit flat on the ground.

Lay the unit flat on the table.
Fan the four outer rings out into two pairs, one pair to each side.

Chain four-in-one unit with an extra ring

Add one open middle ring.
All middle rings point in the same direction.
The outer rings point the opposite direction.

Adding two outer rings

Add two closed outer rings onto the middle ring.
Then close the middle ring.
--> You added the second unit.

Repeating the unit to extend the strip

Repeat the previous two steps to extend the strip:
- Add one open middle ring.
- Add two closed outer rings.
- Close the middle ring.

A second strip of four-in-one

Build a second strip the same way.
Place both strips onto a table.
Orient the strips in the same direction.

Two strips joined into a sheet

Join two strips by adding middle rings.
Each middle ring connects four rings. Two outer rings from each strip.
Start at one end, continue down the line to close it like a zipper.

Base pattern - pictures

The example uses 1.5 mm 304 stainless wire with an 8 mm inner diameter.
This results in an aspect ratio of 5.3.
Chain four-in-one unit in the air.

Thread four closed rings onto one open ring.
Close it to make a single four-in-one unit.

Chain four-in-one unit flat on the ground.

Lay the unit flat on the table.
Fan the four outer rings out into two pairs, one pair to each side.

Unit in the air, held by pliers

Add one open one ring.
Hold the chain up pliers.

Adding two outer rings

Thread two closed rings onto the open ring.
These will be the outer rings.
Close the middle ring.

Repeating the unit to extend the strip

Repeat the previous two steps to extend the strip:
- Add one open middle ring.
- Add two closed outer rings.
- Close the middle ring.

The four-in-one pattern becoming visible

Add more rings, keep all middle rings pointing in the same direction.
Be carefull when you let go off the chain, end pieces can flip direction. The outer rings point the opposite direction.

A finished strip of four-in-one

Repeat until the strip is as long as you need.
Two strips can be joined along their edges to form a sheet.