Double sided 3 color pattern with rigid heddle

From Flaab I also bought a small rigid heddle. Back home, I wanted to try it on my weighted frame and chose to experiment 3 color patterns from Annie MacHale (

As the heddle is quite narrow,  31 threads, some modifications were needed. The first idea was

I then decided to modify it to get a 3 color pattern on both sides (and changed border threads)

Modifications are very simple and not obvious with a white weft. To show them, here is the pattern with a red weft.

Everytime I pick up a thread, I drop the right next one. Very easy to do (that was my first 3color band) and result is nice.

Here is a picture of the setup

The two faces of the band.

Tissage aux cartes


Petite pause estivale.

J’ai commandé auprès de Flaab des cartes de tissage en bois que je recommande vivement.

Pour les utiliser partout, j’ai construit un petit chevalet qui peux être utilisé seul

ou avec une ceinture.

Les poids sont faits avec des boulons de roue de voiture (80g) enveloppés dans des petits sacs en tissus.

J’ai choisi un motif simple assorti avec le lieu.


New way to locally save pattern


In a previous post  I explained how to share patterns.

Since this post, I added a way to locally save patterns on your computer. You can use it to save you drafts in “inkle” and “grid” tools. I will think about adding this function to “heddle” and “tablet” tools.

In the «Load, Save, Export» left menu, there is now a button to save your patterns on your computer.

The saved patterns appear at the bottom of the pattern page

Don’t forget to share some patterns from time to time to show your work.

A few improvements

First, I was asked to add a some keyboard shorcuts to the grid tool. It’s now much more efficient if you use a lot the selection tools.


I also added some visual helps to the realistic tool.

On the left threading description, a red line show the middle of the band.


In the display panel, there are two new options.


First the ability to show row numbers. 

In fact, this option not only show row numbers but also heddle thread number.

With the «vertical guide» option you can add vertical lines to you pattern display. You can choose between no line, just a line on the middle or a red line on the middle and a blue line every 4 thread.


Last modification, on the weaving ruler you now have information of the picks, drops and dual colors of the previous row.

Here :

  • the dual color is used for heddle threads 2,3, 11, 21, 29 and 30
  • on the previous row, it was the open threads 3, 4, 7, 11 etc
  • the thread between heddle threads 5 and 6 is picked up
  • the heddle thread 7 was picked up during the previous row.

Stoorstalka heddles

Seizenn offers facilities for creating patterns for stoorstalka rigid heddles.

The pattern presented here are mainly taken from the stoorstalka sets available on the site

We first choose a common color palette for the Nordic patterns. In the palette creation tool , let choose palette “30”.

Then we will open the tool for “realistic” patterns


In the left menu, go to the “load, Save, Export” submenu. There is a drop-down list with the different heddle models. Just choose a pattern and click on the “heddle pattern” button.

The models available are basic, sigga and sunna. By default the models use the first colors of the palette.

Basic Pattern

Basic heddle is for simple plain weave band. 4 size are available corresponding to the total number of threads : 31, 63, 103, 131.

For “basic 31” you get this default pattern.

You can then modify it to get, for exemple (beginner-level-1/weavekit-basic-vardag-red) ,

Sigga Pattern

Sigga heddle are for dual color float pattern. There are three sizes , 8, 16, 24, corresponding to the number of floating threads.

The Sigga 8 default pattern looks like  

You note that there are 8 green dual color floating thread. Pattern is 35 threads wide and 8 threads have dual colors.

Using the dual color mode and the pickup mode you can get a pattern like (


Sunna heddle is for pickup pattern (baltic). 4 sizes are available, 5, 7, 9, 13 corresponding to the number of pickup dots, the width of the pattern. Sunna 5 pattern has a total of 37 threads.

The Sunna 5 default pattern in seizenn is

You can modify it according to  using the pickup tool.

You could also use the grid tool to create you pattern


This is a personnal project using Sunna 13 heddle. I didn’t use all the border holes.

Starting from default Sunna 5 pattern, you can do this in Seizenn by removing threads and using arrow buttons to move threads and patterns.

Sharing patterns


Following some recent exchanges, it seems important to me to clarify certain points concerning the registration of patterns with Seizenn.

The different tools work in much the same way, what is explained here is as valid for realistic patterns, grid patterns, card weaving patterns or heddle.

Share a pattern

In the “Load, Save, Export” menu there is the button   (or depending on your choice). Until now the accompanying text was “save”. Following a few misuse, I decided to rename it to “share” which better corresponds to its objective.

This button save your pattern on my personal database that I make available so that weavers can present their work, make it available to others. It’s a service that I offer, but storage is not infinite and has a cost. If I want to keep service free, I can’t afford to everyone to save every draft. And it appears that I unfortunately have to monitor a little what is saved.

By default, any shared model appears on the page 

From the list of your patterns you have the possibility of not displaying a pattern in the public list (‘restrict’) and of no longer displaying it in your list (‘delete’).

Attention, in all cases your model remains accessible via its short code. It is not deleted from the database. Only its visibility in the list page is modified. (If you need to do a specific action on one of your pattern, ask me.)

The patterns you saved remain yours. If not deleted, your name and recording date appear next to the thumbnail  .


An attribution problem

Nothing prevents a user from opening one of your patterns (that’s the goal of Seizenn !!!) and sharing it in turn (it’s a misuse). In this case, the same pattern therefore appears twice in the list, with two different authors.

That’s what happened when an undoubtedly well-meaning user recorded all the patterns (s)he liked. That is to say almost all of them. Not only does it take up space on the server for no benefit, but it can also give the impression that this user is appropriating the work of others. And ultimately discourage other weavers from sharing their work.

I had to email this user and remove the duplicate patterns.

I also added a confirmation screen before sharing to disambiguate:

As there was obviously a real need that I hadn’t thought of initially, I added a “like it” button which allows you to build a list of the models you like.

This list is only saved on your computer, it has no impact on the server.

Local pattern saving

It can be particularly interesting to publish very close versions of the same pattern in order to discuss the preferences of other users, to gradually improve a pattern with several people via network sharing. When you look at Annie MacHale’s work, the quality of a band can be tied to a very small detail (see for example design-and.html).

But when building a pickup-type model, it is not useful to use the button at each stage of the work.

With the new version, the model you are working on is automatically saved in your browser. This is what makes it possible to have a function for undoing the last actions.

If you shut down your computer and then open Seizenn again with the same web-browser you should see your pattern.

No need to upload your draft before it’s finished.

In some cases you may wish to avoid using the button. For example when you are in a place without a network but want to save your work. Or you consider that you are taking too big a risk by hosting your work on my server (if you use Seizenn to write a book, don’t forget to contact me please). In those cases, you can find your pattern description in the “load, save” menu on the left.

Copy the content of the textarea (“m=…”) somewhere to keep track of your pattern. You can send it by mail etc. To load your pattern back, just paste the text in the textarea and click the button.

Other technical solutions would be possible with more work and if there is a clear need.

EDIT 04/01/2022

There is now a button to save your pattern on your computer.

The saved patterns appear at the bottom of the pattern page

I hope these details will be useful to you.

Double-faced tablet weaving with Seizenn


I added a simple tool to draw tablet weaving pattern : Here is a post to demonstrate how it works for double-faced patterns.

First, in the main menu of seizen open the «tablet weaving tool». It works the same way other Seizenn tools.

On the left menu, in the “Load, Save, Export” menu, you can choose the size of your pattern and click on the “create” button

As you want to create a “double faced” pattern, in the “tools” menu, choose a “Double-faced” threading and a “2+2” rotations (repetition of 2 fronts and 2 backs)

You now have a blank pattern, ready to draw on it.

Like with the other seizenn pages, the colors are selected from the color palette. Default threading use the 2 first colors. You can of course change them.

On the “Edit Mode” menu, choose “double-faced mode”

Now, when you click on the pattern, you flip two cases, as required to draw a double-faced pattern. You can change the weft color by left clicking on the down left square with the wanted color selected.

If you click on the first row, it will change the hole which is upside at the begin. Useful for standard tablet-weaving. Maybe less for double-faced pattern.

You also can do some actions depending on where you right clicks (add cards or pick, change twining etc.).

GTT is a very great tool, and many patterns made with it are available. You can find some on

On the “Load, Save, Export” menu you can load GTT file. (GTT is very powerfull, not all kind of pattern can be read with Seizenn)

If you choose the wolf :

Watch out, Seizenn doesn’t use the colors from the pattern file. I made this choice because you may not have in your shelves (in your main and loom palettes) exactly the colors that was used by the person who created the pattern. And colors are very simple to change with Seizenn.

If you want to work with square pattern, show rotation changes, turning etc, choose the optinos in the «Display option» menu. You can get for example :

The Sulawesi tool works quite the same.

(link to this pattern

I keep working to understand how to better support tablet weaving with Seizenn (notation problems, empty holes)


A few improvements for this new year


For this new year I present to you some small improvements for Seizenn.

Lists of patterns

When you save a pattern, it is by default visible for everyone in the public list. It’s now possible to make it private using the “restrict” button in you private list.

Loom colors

You can have colors in your «loom palette» that are not used in your pattern. Now those colors are bordered with brown like this :

Rigid heddle pattern

In loom editor you can load default pattern for some popular rigid heddle

You then get

New tools

Seizenn was first designed for plain weave or baltik bands. I then added a grid tool. I recently wanted to explore some other weaving technics.

Now you have two new tools.

The first one to draw heddle loom patterns

A second one to draw tablet patterns

Those tools are very simple, I mainly created them to undestand how those kinds of pattern work. They reuse main principles of seizenn, and I just added a few new things like right-click menu in tablet tool.

I could improve them if they would be useful for someone.


Extract colors from a picture


In Celebration of plain weave (page 27) Annie MacHale explains how to extract colors from a picture to create a color palette.

I tried to add a basic function like this in Seizenn. (

Open the Palette tool and go down the page to

You first need to load a picture. You can get a random picture from with  or load your own picture with . If you use Seizenn on a smartphone, you can get access to your camera !

For example, with a random picture, you can get :

Then Seizen use two different algorithms to extract colors from this picture :

With the first button, you take all those colors to create a new main palette

But it could be tricky to find yarns with the wanted colors. So instead of getting all the colors in a new color palette, use the second button.

Imagine that you use this main palette (the default one) and that you have all those colors at home

When you click on the “filter” button, Seizenn will try to find de nearest colors in your main palette that will fit the colors from the picture. You then get

(Sometimes, if main palette quite poor, it chooses colors that doesn’t seem to be very relevant)

Clic on “Add colors…” to get those colors in your loom palette and remove colors you don’t want to use.

You are now ready to design a pattern inspired by your picture

Link to the pattern :

Maybe not the perfect tool, but a first try to see if it would be useful for someone.



Seizenn interface evolutions – text buttons


The first version of seizenn ( was created to work on desktop computers. When I began v2, I wanted it to work both on desktop and mobile devices and not to limit it to English speakers. I thought icons should help me for that two goals.

I received feedbacks saying the new interface was too disturbing.

As I continue to learn new programming things, I’m now able to adapt the new interface

Now on top right of the screen there is a new menu :

  • the broken chain only appears when you are offline
  • clic on the icon with the profile to log. It’s red when you are not connected.
  • the third one shows if seizenn detect a desktop or a mobile device.
  • with the first checkbox, you choose if you want menu on the left of the screen or at the top
  • with the second checkbox you choose if you want to use icon or text button
  • use the selector to change language.

As an example, with the icon/text checkbox you can choose between


When you open Seizenn on a desktop, the tool uses text button on the left by default. On a mobile device, it uses icons on top. You can change as you want.

You may notice that I now use the new link for the new version in replacement of The old version remains available on

I hope those new evolution will help you.