Ashenhurst’s Formula to Determine Sett

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Did you know you can use a … well, let’s call it a relatively simple mathematical formula to figure out a good sett for your yarn with nothing more than its yards per pound and some information about the threading you’ll be using?

If you’re weaving plain weave or twill and have a calculator handy, the math is dead easy. Even if you’re weaving a multishaft twill or some other structure entirely, it’s still not too bad! Best of all, Ashenhurst’s formula will give you a much better starting point for sett for fancy twills and other structures than the commonly recommended “wrap some yarn around a ruler and divide by 2 or multiply by 2/3rds.”

Don’t feel like crunching the numbers yourself? Use our Ashenhurst calculator!

Prerequisite Classes

None

Equipment needed

A calculator

Weaving skills needed

None

Tools used

The Ashenhurst calculator

Course Content

Who or what is an Ashenhurst? Included with Membership

What do you need to use Ashenhurst’s formula? Included with Membership

Counting the intersections in a repeat (IPR) Included with Membership

Doing the math Included with Membership

Choosing a sett you can actually use Included with Membership

Ashenhurst’s Formula to Determine Sett

Prerequisite Classes

Equipment needed

Weaving skills needed

Tools used

Course Content

Course Includes

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Ashenhurst’s Formula to Determine Sett

Prerequisite Classes

Equipment needed

Weaving skills needed

Tools used

Course Content

Course Includes

Use this field to search the entire Academy website for a topic you're interested in.

You’ll be taken to a page that lists every spot on the website where your keyword(s) are mentioned, organized by type: courses, lessons, blog posts, forum threads, help files, etc. From there you can click any link to see the related content.

In order to search effectively, you need to pick a keyword that’s related to the subject of your search. If you want to find blog posts about floating selvages, for instance, the subject is “floating selvage,” not “blog post.”

Stick to singular versions of your keyword rather than plural most of the time: a keyword of selvage will find results that contain both “selvage” and “selvages,” but selvages won’t match anything that only has “selvage” without the ‘s’ at the end.

Keep in mind that the same word might be spelled in different ways – selvage and selvedge, dornick and dornik, etc.

Add extra descriptors to narrow a search, or take them off to get more results. Selvage will turn up results related to selvages of any kind, but floating selvage will narrow the results to only things that mention those two words together.

You can use the search button that’s always visible at the top of the page to search the entire site. It works just like this search field – except that you don’t even have to hit Return!

Just click the magnifying glass and type your keyword into the box that opens. A list of the top search results will appear immediately; you can click on any of them to go straight to that content.

Or, hit Return like usual and go to the page that lists all results organized by type so you can find exactly what you’re looking for.