Chainmail Guide · 01
European 4-in-1.
The oldest chainmail weave. More than two thousand years of armour, cathedrals of rings, and, now, very fine jewelry. Every ring passes through four neighbours. Once you learn it, every other weave makes sense.
What you are building: a small piece of European 4-in-1 mesh
Ring specifications
- Material
- Stainless steel
- Inner diameter
- 10 mm
- Wire thickness
- 1.4 mm
- Aspect ratio
- 7.14
A note on AR. Aspect ratio (AR) = inner diameter ÷ wire thickness. European 4-in-1 works from roughly AR 3.0 (tight, armour-like) up to AR 7.0 (loose, drapey). At AR 7.14 your weave sits at the upper edge: rings move freely, the mesh flows like fabric, and the whole piece drapes softly against skin. Ideal for jewelry. If you ever want a tighter, stiffer mesh, switch to 1.6 mm wire at the same ID (AR 6.25) or a smaller 8 mm ID ring (AR 5.71).
What you need
Jump rings
Stainless steel, 10 mm inner diameter, 1.4 mm wire. For a bracelet (20 cm), buy around 250 rings. Order a few spares. You will drop some, and half-open rings are useless.
Two pairs of pliers
Flat-nose or chain-nose, one in each hand. Avoid ridged jaws; they mark the metal. Bent-nose is fine.
Optional but useful: a small tray or bowl to keep open and closed rings separated. Tape one side of the table for grip.
Learn these four words first
Closed ring
A ring whose ends sit flush against each other. No gap. You cannot thread anything new into it.
Open ring
A ring whose ends have been twisted sideways (not pulled apart) to create a small gap. You thread other rings onto this ring, then close it again. Jump rings come cut from a tight coil, so the two ends already sit at slightly different heights, ready to weave through other rings.
Aspect ratio (AR)
Inner diameter divided by wire thickness. A single number that tells you how loose or tight a weave will feel. Your rings: 10 ÷ 1.4 = 7.14.
Mouse ears
Lay a row of European 4-in-1 flat on the table. Two closed rings slant up and outward at each unit, like Mickey Mouse ears. Spotting them is how you know your weave orientation is correct. Once you see them, you cannot un-see them.
The method
There are two common ways to weave European 4-in-1. In this guide we use the continuous-growth method: build one unit, then extend it ring by ring. Open a new ring, thread it through the far end of what you already have, slide two more closed rings onto it, close. Repeat. The weave grows under your hands like knitting. No detached pieces. No seams. This is how experienced weavers work, and it stays tidy even for very large projects.
The weave, step by step
How to read the diagrams
In every illustration, the gold ring is the one you are working with right now. The sage rings are the ones already woven.
Prepare your rings.
Close four rings: hold each between two pliers, one on each side of the gap, and gently twist your wrists toward each other until the ends meet flush. Open one ring by twisting the ends sideways, not pulling them apart. A 2 mm gap is enough.
Thread four closed rings onto the open one.
Slide all four closed rings over the open ring, one at a time. They will hang loose and overlap. That is fine. Keep the open ring held firmly between the pliers so it does not close prematurely.
Close the ring. Your first unit is done.
Twist the ends back together until they meet flush. You now have one ring holding four. Lay it flat on the table: two of the four closed rings fan up and outward, your first mouse ears. The other two lie underneath, pointing the opposite way. This orientation matters for every ring that follows.
Attach a new open ring through the two end rings.
Here is the trick that makes the weave continuous. Take a fresh open ring. Thread it through the two closed rings at one end of your unit (the two mouse-ears, or the two underneath, either end works; be consistent). Do not close the ring yet. It is hanging off the unit by itself, ready to accept more closed rings.
Add two more closed rings, then close.
Still holding the open ring, slide two fresh closed rings onto it. Close the ring. That ring is now the centre of your second unit: two old rings on one side, two new rings on the other. You have just grown your weave by one full unit without ever building a detached block.
Repeat. The row grows ring by ring.
Open a new ring. Thread it through the two closed rings at the newest end of your piece. Slide two more closed rings onto it. Close. That is one full unit added. Do it again. And again. A bracelet is about 12 to 14 units (roughly 20 cm, including the clasp you will add at the end). Every third or fourth unit, stop and check the mouse ears still point the same way along the whole row.
Start the second row, from the beginning.
Rows grow sideways from the first. Go back to the very beginning of your row (the end you started from, not the one you just finished at). Open a new ring. Thread it through the two side rings at that first unit, the ones fanning outward. Do not close yet.
Two full rows, joined at the starting end by one connector ring (gold). In practice you build the second row ring by ring, not as a detached second row. The image shows the shape you are working toward.
Add two closed rings, close, then work along.
Same continuous-growth move. Slide two fresh closed rings onto the open ring. Close. You have added the first unit of row two. Walk along the first row: open a new ring, thread it through the two adjacent side rings of the first row and through the most recent ring you just added. Two closed rings on. Close. Repeat until the second row is the same length as the first.
Grow until you have a piece you love.
A single row makes a slim bracelet. Three rows make a cuff. Nine rows make a choker. Forty rows make a collar. There is no end to European 4-in-1. Medieval Europeans built full shirts with it, ring by ring, exactly like this. Every ring you add is the same move: open, thread through two, slide two more on, close.
Fixes for the usual problems
My rings won't close flush.
You opened them by pulling apart, not twisting. The ends flared outward and lost their round shape. Close them as best you can and keep going. On the next ring, twist sideways only.
The weave looks twisted.
Lay the piece flat and look for the mouse ears. Every unit should have its two closed rings slanting the same direction. If one unit points the wrong way, open the newest ring in that unit and flip the ears.
The mesh feels too loose.
At AR 7.14 the rings have room to shift. That is normal for these proportions and gives you the flowing drape that makes stainless steel jewelry sit nicely on skin. For a denser mesh, switch to 1.6 mm wire at the same ID (AR 6.25).
My hands hurt.
Work in 20-minute sessions. Stainless steel is stiffer than aluminium or copper, and wrists notice. Warm your hands first, hold the pliers loose, let the tool do the work.
I keep losing count.
Pre-open and pre-close rings in small batches (say 20 at a time). Keep them in separate bowls. You stop thinking about prep and focus on the weave.
The ring join has a sharp edge.
The two ends are slightly offset. Grip the ring with one plier and gently push one end past the other with the second plier, then back. The scissor motion aligns them.
Easier with someone next to you.
European 4-in-1 is beginner-friendly in writing and fiddly in practice. Two hours at a table with Maria, all tools and materials on hand, and you leave with a bracelet you made yourself.