A draft is a map, not a maze

Any weaving draft, however dense it looks, is really just three instructions and one picture. The threading block along the top tells you which shaft each warp end goes through. The tie-up in the bottom left tells you which shafts each treadle lifts. The treadling block on the bottom right tells you the order to press those treadles. The drawdown — the grid of filled squares — is the reward: a preview of the cloth you are about to make.

Once you can read those three blocks, you can sit down at an unfamiliar loom with a borrowed draft and know exactly what to do. That is a useful skill on a smallholding, where looms tend to arrive secondhand, half-threaded, with a photocopied draft tucked in the shuttle race.

Reading the threading: where each warp end lives

The threading block is a row of columns, one per warp end, with numbers or crosses marking which shaft that end passes through. Most drafts are written to be read from right to left, matching the direction you thread from the right-hand side of the loom, but plenty of books do the opposite. Check the first few ends against the draft before you commit, because unpicking a hundred ends is nobody's idea of a good afternoon.

On a four-shaft loom the numbers only ever run 1, 2, 3, 4. A threading written 1, 2, 3, 4 repeated across the width is the classic straight draw, and it is the foundation of most simple patterns you will meet. If you have eight shafts, the same logic holds, just with a longer sequence.

The tie-up: which shafts rise together

The tie-up is a small grid of shafts against treadles. A mark in a square means that treadle lifts that shaft. Press one treadle, and half your warp ends rise while the rest stay down, opening a shed for the shuttle to pass through.

One thing catches out nearly every new weaver: rising-shed versus sinking-shed looms. A rising-shed loom lifts the marked shafts; a sinking-shed loom does the opposite, lowering them. Drafts are usually written for rising shed. If your loom sinks, simply invert the tie-up — mark the empty squares and ignore the marked ones.

The treadling: your feet make the pattern

The treadling block is a vertical list of treadle numbers, read from the top downwards, one line per pick of weft. Treadle 1, then 2, then 3, then 4, then back to the beginning: that is the rhythm that turns a straight draw into cloth. The order you treadle, combined with the threading and tie-up, is what generates the diagonal, the herringbone, the little pointed diamonds.

Keep a sticky note on the beater or a scrap of paper on the loom bench with the sequence written out. It saves a great deal of muttering.

Two drafts worth knowing by heart

These two will cover most of what a smallholder actually wants to weave.

• Plain weave: thread 1, 2, 3, 4 and repeat. Tie up so treadle 1 lifts shafts 1 and 3, and treadle 2 lifts shafts 2 and 4. Treadle 1, 2, 1, 2. Firm, hardwearing, honest cloth — ideal for peg-bag sets, tea towels and heavy rugs from chunky handspun.
• 2/2 twill: thread 1, 2, 3, 4 and repeat. Tie treadle 1 to shafts 1 and 2, treadle 2 to shafts 2 and 3, treadle 3 to shafts 3 and 4, treadle 4 to shafts 4 and 1. Treadle 1, 2, 3, 4 and repeat. You get a lovely diagonal line, a softer drape and fewer floats than you might fear. Blankets, shawls and waistcoat panels live here.

Because twill takes up more yarn than plain weave, expect to need perhaps a tenth more weft for the same length, and consider a slightly looser sett.

Sampling on the smallholding

Homegrown wool behaves differently from mill-spun. A Romney fleece spun worsted will hold a crisp twill; a soft Bluefaced Leicester or Shetland handspun may bloom and full in the finish, closing up the pattern. This is why sampling matters more than the draft itself.

• Wind a warp long enough for three sample squares plus loom waste.
• Weave one square in plain weave, one in twill, one with a different weft.
• Write the draft, the breed, the sett and the pick count straight onto a luggage tag and tie it to the sample. Future you will be grateful.
• Wash and press the samples before judging. Wool changes its mind in warm water.
• Add a floating selvedge — one extra end each side, weighted and not threaded — if your edges are pulling in.

Reading a draft is really just reading a recipe. Thread it once, treadle it slowly, and keep the sample. The pattern will do the rest.