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30 June, 2010

Texture in Plain Weave - Warp Repp

Filed under: Art, Education, Teaching, Weaving — Tags: , , , — admin @ 8:42 pm

Last week we looked at introducing textural elements into your plain weave to give instant changes.  This week, we are looking at a technique called Warp Repp.  This is a fabric where the warp yarns are so closely sett to each other that the weft yarn cannot be seen.  This is known as warp-faced cloth.

Firstly, a little information on sett and how it impacts your cloth. 

Imagine wrapping your yarn around a ruler so that each new strand touches the one preceding it, so you can’t see in between the strands, but the strands aren’t overlapping each other.  Normally you would use this method to give you the total number of wraps per inch, and then mentally replace some of the threads to allow space for the weft threads to pass through the warp ends. 

For instance, if you wanted to weave a balanced plain weave (which we talked about last week), you would need to create space after each strand so that a weft yarn of the same size could fit through the gap.  If you did that all the way across the inch, you would find that you had halved your original number of strands.  So if we want plain weave, we divide the number of wraps per inch by 2.  That gives you your sett. 

If you wanted to weave a balanced twill weave on 4 ends, that structure needs 2 threads to be adjacent to each other, then a space for the weft, then another 2 threads together, then a space (for 2/2 twill).  Alternatively you might want 3 threads adjacent to each other, then a space for the weft, followed by just 1 warp thread, followed by a weft space.  Either way, you have pushed 2 strands out of the way to create the space for the weft.  Therefore, only 4 out of 6 strands are required for a 4-end twill, so you would divide your total number of wraps per inch by 2/3 to get the sett you would need for twill.  This is very approximate, and varies depending on the weave structure you want to use and the yarns you are using.  If you have hairy yarns( ie mohair), you may need to leave more space for the weft, and for very smooth yarns (such as rayon) you may need to close up the gaps a little.

Anyway, the closer together you sett your yarns, the more warp-faced it becomes.  If the warp is all you can see, that is called warp-faced.  If you can see a little bit of the weft, then it is called a warp-emphasis  fabric.  If you can see equal amounts of warp and weft, then you have a balanced cloth.  If you can see more weft than warp, but you can still see some warp, then you have a weft-emphasis fabric, and when you can only see the weft, and no warp, then it is weft-faced.  Both extremes are very useful for rugs! 

Note:  it is a very useful exercise on its own to do a sample warp where you do a sample with warp-faced, and resley for warp-emphasis, then resley for balanced, then for weft-emphasis and finally for weft-faced.  This gives you an idea of how the different setts can affect your weaving, and the texture differences that are created just through a change in the sett.

Warp Repp

It’s quite fun to have two different colours, or combinations of colours, in your warp and to sley them so closely that you can use thicker and thinner weft yarns to create colour ridges.  This is called warp repp, and to do this you need to put one colour (or combination) onto two shafts, and the other on two more shafts, and sley them through the reed twice as closely as you would for a normal balanced weave.  Once you have done this, you weave using the two shafts with one colour as if they were one shaft, and alternating them with the other two shafts with the other colour. 

 Warp  1

 

 

 

Warp 2

 

 

  

Why bother putting the two colours on 4 shafts?  Why not just use 2?  Well, if you put the threads that closely together so that the weft yarn doesn’t play any visual part on the surface on the fabric (other than its thickness making one colour warp more prominent) then it is really hard to lift all the warp ends you want in one colour without snarling them up with the other colour.  4 shafts enables you to spread the threads out just a little, and raise one shaft first to raise half the threads you want, and then the other shaft to raise the other half, before putting the weft yarn through.  

The fun comes here with the varying of the thickness of the weft yarn.  Basically the weft yarn just sits in between the two different layers of colour which alternate being on the top or the underneath of the fabric.  If you use two wefts of similar thickness, both warp colours have equal prominence.  Don’t forget that the weft yarn won’t be seen except at the edges where it turns round to go back into the next pick because the warp yarns are so close together. 

 

However, if you change the thickness of one or both of the weft yarns, so that one is much thicker than the other, you change the emphasis on the colour showing on one side of the fabric.  The opposite colour will show more on the other side of the fabric.  If you create a thicker weft yarn by doubling, tripling or quadrupling the number of strands of weft in one pick, you can vary the amount of colour showing on one side at will.  If you choose to graduate the thicker yarn so it gets thinner over a period of several picks, whilst the thinner yarn gets thicker over the same period, you will effectively be changing over the predominance of the colour on one side, with the reverse happening on the other side.  This is what I did here….

 

 

 Warp repp side 1

 

 

 

 

 

 

 

 

         Warp repp side 2                                                           

If your warp happens to include some textured yarns in it, then there is even more interest in the appearance of the fabric.  However, do be aware that because it is sett so close together, textured warp yarns might well be hard to separate into their respective layers. 

These illustrations are from a series of samples I developed from a greetings card.

    

In the process of weaving one of the samples, I made an error.  I was not a happy bunny about this mistake at the time, but the next day, with a cooler head and a more objective eye, I realised that this mistake could be turned into a distinctive feature and here is the result.

Sunset at Sea.

 

 

 

 

 

 

 

 

 

 

 

 

The moral of this is that there are no mistakes in weaving, merely opportunities, which is what my first weaving teacher told me in my first week of weaving.  What a mantra to live by!!

Next week, combining different setts to get different effects.

In future weeks, I shall be introducing one of my favourite simple weaves - honeycomb, introducing you to overshot for texture, crepe weaves and woven shibori.  Later blogs will include creating texture in double cloth. 

Please feel free to share the blog with your weaving friends.  The more the merrier!

 

© Stacey Harvey-Brown 2010

 

13 July, 2009

The Power of the Subconscious Mind

Filed under: Life, Psychology, Weaving — Tags: , , — admin @ 12:33 pm

We all know that the subconscious is a powerful thing.  Something I experienced today, and many times in the past, shows just how much it works in everyday things. 

I’m doing sample weaving at the moment, with lots of plain weaving and overshot picks.  I have a 24shaft AVL Compu-dobby loom.  For those new to weaving, this is a big loom, with 24 metal and wood shafts that hold the heddles (or eyes) through which the warp is threaded.  The heddles are metal as my loom is some 30 years old.  The action of the loom is a lifting one.  When I want to separate the threads to insert the weft yarn, I press a foot pedal which raises all the shafts that I want to use.  The gap between the threads on the raised shafts, and the threads on the shafts which stay down is where I place my weft yarn. 

So far so good.  The only problem is that when you are weaving plain weave on 24 shafts, you are lifting 12 shafts at a time – half the warp on one pick (row) with alternate ends, and half the warp on the remaining ends on the next pick.   As the width of the warp increases or the closer the warp is set, the weight becomes heavier because the number of heddles is increased.  I am weaving with 17” out of a possible 36” with the warp sett at 24 ends per inch.  So the lifts aren’t as heavy as they could be, but heavy enough.  The AVL loom has two pedals – the right one to lift the shafts, the left one to move the selection on to the next pick.  So my right leg does all the lifting.  And my right knee is beginning to complain after 13 years of weaving on this loom. 

I was weaving a series of samples where the first one uses an overshot pick after each plain weave pick.  Overshot is a weave where you raise blocks of threads in order to create areas of floats where the weft yarn doesn’t intersect with the warp.   These are comparatively lighter than the plain weave picks.  The second sample had two picks of plain weave between each overshot pick; the third and fourth samples had four picks of plain weave before each overshot pick. 

When I was focused on my weaving, everything went smoothly, but every so often, as with most people, my mind would wander a little, and I would lose my conscious awareness of where I was in the weaving.  If my subconscious was expecting a plain weave pick, and the next pick was actually an overshot one, my right leg pushed way too hard and slammed onto the ground as it didn’t encounter the resistance it was expecting.  On the other hand, if my subconscious was expecting an overshot pick, and it was actually a plain weave pick, the effort to push the pedal down to raise the plain weave shafts was really hard. 

It made me stop to think just how powerful the subconscious mind is.  We’ve all heard stories of mums who save their children through doing feats of extraordinary strength which normally they would never be able to contemplate.  So it just makes me realise how much our own minds can limit what we achieve.  If our subconscious believes we can do something, even though it would appear that we physically shouldn’t have the strength, we can achieve it.  Mental muscle!

Hmmmm.  Food for thought!! 

1 February, 2009

Zone Out

Filed under: Life, Philosophy, Weaving — Tags: , , , , — admin @ 3:49 pm

One of the books I am reading at the moment is called 101 Experiments in the Philosophy of Everyday Life by Roger-Pol Droit. It’s full of different exercises you can try to see deeper than the surface of things.

The second exercise in the book – Empty a Word of Its Meaning – is one that resonates with me in weaving as well.   You know the kind of thing – keep repeating a commonplace word and it loses its meaning, or as Roger-Pol Droit puts it, “it detaches itself and hardens.”  He continues, “You find yourself repeating a series of strange sounds. A series of absurd and meaningless noises, that denote nothing, indicate nothing… “.  This happens to me especially during a boring meeting when someone is going on about a specific topic, and they keep repeating the same word. It just becomes farcical because the word becomes disassociated with what they are talking about. 

It’s a weird feeling when that happens – you feel slightly disassociated from reality and everything gets a bit surreal – but it’s kind of nice. 

This zoning out of surface reality happens to me sometimes when I’m weaving.  If I’m doing repetitious work that needs focus but not total concentration, such as weaving a predictable pattern that I’ve woven lots of times before (as I often do in weaving samples), I can find my mind going a little somnolent.  This is an interesting place to be in.  You are aware, but not totally focussed on anything external.  Your mind is in a kind of free-fall, your body feels a bit in limbo. 

It can also be a creative place to be.  When we are caught up with words relating to everyday life, we are pinned down in our reality, fixed to the earth with concrete meanings.  When we find ourselves in mental free-fall, we have the chance and opportunity to be incredibly creative, with the sub-conscious providing new associations.  It’s kind of like having a brain partitioned like a computer hard-drive.  One part does all the obvious surface stuff, the other is for another experience.  When I zone-out of surface reality, my mind pops into the partitioned section where words don’t exist and normal sensations take on a different quality. 

Have you ever wondered how it would feel to be an astronaut floating in non-gravity?  The lack of reference as to what’s up and what’s down, no gravity to root things to where they should be in our normal experience?  I think that’s kind of what must happen mentally when we zone out. 

As children, I think we are much more aware of this side of our personalities.  Imagination takes kids to all sorts of fantastical but relevant places.  Perhaps it’s something that we need to cultivate more actively as adults – to regain that slightly disturbing but ultimately exciting and freeing sensation .  As Roger-Pol Droit observes, “Just a few seconds are enough to tear that fine film within which we make sense of things, smug with the power of giving things names.” 

Whilst not everyone reading this blog will be a weaver, or like to weave repetitious samples, we can all play the repeating word game, and find that incredible space where reality is suspended……




 
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