51I want to weave

Create a project and set its craft to Weaving - in the new-project sheet, or later from Edit. A Weaving tab appears on the project. Open it and it asks: Try the weaving tools? Tap Turn on weaving tools and the record opens up.

Start with the loom, because it decides what the rest of the tab asks you. Rigid heddle, Table loom, Floor loom, Dobby, Pin loom, Inkle, Tablet or card, Tapestry, Backstrap, or Other. Pick one and the fields that matter for it appear; the ones that do not, do not.

A shaft loom asks for shafts and treadles, and for its loom action - jack, counterbalance or countermarch - because that decides which tie-ups it will weave comfortably. A rigid heddle asks for the heddle size, how many heddles are in the loom, the threading, and any pick-up sticks or heddle rods. A pin loom asks only for the square size and whether you wind one strand per pin or two - and then tells you roughly how much yarn your squares will take.

Sett is how closely the warp sits: ends per inch. Record the reed you are using in dents per inch, how many ends per dent you are sleying (one number, or a repeat you count out at the reed such as 2,1), and the width in reed. On a rigid heddle the sett follows from the heddle and threading instead, and the app says where its number came from.

Measure the yarn's wraps per inch - wrap it round a ruler for one inch and count - and the app offers a typical starting sett for that yarn, or a sourced range if you are weaving weft-faced. It says which it is basing that on, and it says to sample.

Name the structure you are weaving and where the draft came from - book and page, an archive number, or a link. The structure list shows what our sources document for the loom you chose. It is a citation list, not a rulebook: Other takes any name you like, and rigid-heddle terminology in particular is still settling.

You can hold the draft itself here too. Import WIF brings in a draft from your design program; Export WIF takes it back out to work on there. The draft is drawn the way weavers read it - threading across the top, tie-up top right, treadling down the right, cloth in the middle - and Open full view gives it the whole screen, with a size control for old eyes and small phones.

How long a warp, and how many ends? Record total ends and warp length, then the three things that make a warp longer than the cloth: take-up (the yarn that goes into the over-and-under), shrinkage (what wet finishing will take), and loom waste (what is tied on and never woven). Say how many pieces you are getting from the warp - four towels from one warp is four pieces - and note your warping method. There is also draw-in: how much the width pulls in as you weave, around 10% for a balanced weave and more for a firm beat. Give it the finished width and length you want and the warp is planned back from there.

Pick the yarns on the project's Yarns tab as usual, and they appear here to assign: warp yarn, weft yarn, and tabby weft where the structure needs one. There is a yarn count system field for the counts weavers use rather than knitting weights - cotton count, worsted count, linen lea, Nm, Tex, denier, yards per pound - and a metres per kilogram field for the yarn's grist, which is what turns a length into how much to buy. Leave the weft grist empty and the warp's is used for both.

When the cloth is off the loom, record the off-loom width and length, how you wet finished it - not yet, hand washed, machine washed, fulled, pressed or steamed - and then the finished measurements. The app works out your width and length shrinkage from those two pairs of numbers, and shows you the arithmetic it used rather than asking you to trust it: (off-loom − finished) ÷ off-loom × 100.

Print project sheet turns the whole record into a PDF to keep beside the loom or file with the cloth. On a phone it opens so you can share or print it; on the web it downloads - on an iPhone, look in Files → Downloads.

Publish to the Ravelry project notes writes the record into your notes as one clearly marked section, and keeps it up to date as you change things. Everything else you have written stays untouched - and if you edit inside that section yourself, the app leaves it exactly as you wrote it rather than overwriting your words. You choose whether it goes to your public Notes or your Private notes, and it is a separate opt-in from the tools themselves.