Showing posts with label nerdliness. Show all posts
Showing posts with label nerdliness. Show all posts

Sunday, 22 February 2015

Making Extracts and Messes

 I made this post earlier, but it's been languishing in the draft file. So I might as well post it before it gets to the point where it's been too long, like most of my unposted drafts.

While Shemar hasn't been working, I've been doing other things, most especially with my Christmas present, and trying to figure out how to make the mukluks but too scared to actually cut the material. My first project with the new burner has been a bit of a comedy of errors. Like most of my dyeing experiments.

After the last disaster mama said "you are always trying so hard on these projects and they always backfire on you". Which is true and why I'd never be able to do anything creative professionally. Accidents are really the primary part of my creative process.

I've had some cochineal for years and never used it. Since I know it can produce a lot of dye by multiple extractions, I decided I wanted to make a powder extract. I looked on the Place For All Answers, the natural dye list, but couldn't find anything much on the best process to produce a powder extract. So I thought well it would just be about extracting and then dehydrating, can't be that hard. But then I forgot this was being done by me.

The process took up most of January but I did manage to produce 30g of dye extract which should dye 300g of fabric. It's also the amount of bug I started with, so I have an extract that should be ten times more potent than the whole bug. So it's not entirely unsuccessful.

Through the errors I've figured out the best way to do this is to make small batches of dye and then bake it in a pyrex plate at about 300F and scrape out with a razor. But it took a lot of not doing that to get to that point. My basement looks like I killed someone in it, and so did my hands. Red EVERYWHERE. But got to do some cool experiments anyway. And I took pictures for mem's benefit, since he is so interested in dye process (hah). I intended to post them here but I'm lazy so it's taken me the better part of a month.
The bugs secreting their lovely red. I ground them up a little, but not overly so. Once they had been reconstituted, they really did look like bugs again. 

  first extractions, so red they were opaque. I'm pretty sure I did at least 20 extractions before the bugs stopped producing enough colour to be worth it.

At this point I decided to siphon off some of it in case I ruined it and see what I could get for colour. The first attempt precipitated, and now I have some cochineal pigment after I cooked it down. Then I got some nice pinky reds on silk and alpaca. The silk surprisingly took the best colour. This is the same silk I used for Athanasius and John Owen, and it never took ANYTHING well. Except cochineal apparently. 
As I continued to extract, I put the small extractions into my giant stock pot with a light to reduce and the plan to cook that down in the pot. But I started to notice some black sludge forming at the top. Didn't know what it was or why it was there. Was it going bad? I skimmed it off with shop towels.
 
black crap. 

When I dyed the yarn, I added a little vinegar to shift the colour a bit. The black sludge turned bright orange. Turns out it was dye material and I had gotten rid of it (I had reserved about a cup of it because I wondered if there was something I could do with it and there was soo much. So I only threw away some of it, but it all had to be reconsituted). Here it is on the table where I had spilled some of the black--orange in the vinegar. 
Damn it I threw away dye. I pulled out the shop towels and soaked them in vinegar to pull the dye back out. I'm not sure what kind of chemical thing was going on here, only vinegar would return it to a coloured dye material from a pure black.

   reconstituting the sludge.

 Making a mess. I looked like I slapped someone silly after this. Prolly what Nicholas of Myra looked like after the council of Nicea.


This is the sludge that was sitting at the bottom of the big stock pot when I strained it. I decided to pull that out and start drying it out on its own. 


I put the sludge on some foil and stuck it in my pyrex plate. I cooked it on broil and it worked nicely. The second time I put it on broil without foil, the plate broke when I pulled it out. So I need a new plate. Then I broke another one! Mama told me to put it on bake instead of broil and the rest of the extractions went nicely. But more dye wasted. :( 

Originally I attempted a dehydration set up with a light and aluminum foil. This actually worked pretty well, except the plastic melted and the containers were too small so it took longer for the stuff to dry out and turned out to be difficult to scrape out. I eventually started just pouring each extraction into the pyrex plate and cooked for like half an hour then scraped it out. I'd get about a gram of dye with each extraction. 

Altering the colour of the saved bit. Ammonia added to vinegar. 

After I realized that the black sludge was in fact dye and pulled out what I could from the shop towels soaked in vinegar as well as the cup I reserved, I played with the ph a little. 

This is how you get orange and scarlet with cochineal, it's an indicator dye. That is, the colour can be shifted by changing the ph and by adding different auxiliaries.  The ph on the left is about 4 with vinegar and 8 on the left with ammonia.




The final result. 30g of carmine (I got some more after this). And probably another 30g all over my basement. Some of it did wash out of my housecoat. Some of it.

I'd like to try this with my wood dyes, but they're way more temperature sensitive in my experience, especially logwood. My first logwood experiments became a very ugly brown that actually seemed to discharge the purple colour before it ever even got to the boiling point. That was an interesting, if less than cool experiment. So I guess I'd have to cook at much much lower temps. And probably dehydrate in an actual dehydrator because baking would probably destroy it.

So I have pure forms of two of the dyes for project. Murex next, right?

Sunday, 11 January 2015

Odds and Ends (last one)

So I personally think an art project based on the colours and white would be just about the coolest thing EVAR. Plus I could write a major best selling book documenting the process, which would also be my dissertation in being a not-pastor.  Then I could stop battleaxing and just retire to a life of self-agrandizement, which is basically what artists have to do to get noticed these days. Unfortunately the thing keeping me from it is that a murex vat would cost about 60 grand to make. Major sad.

Anyway I asked mem if I should put historic references into the post because the arguments rely on history a lot. I hate putting references into a text because they distract from the thought flow, but I did write it so that most of it could be referenced pretty easily if I had to. So these are some of the sources I used (referencing process is harder since I don't know how I know things I learned 15-17 years ago anymore). Rey asked for the references so I'm finally getting this post out.

The cool thing about the subject is that it intersects with many nerdly pursuits: theology, biblical studies, chemistry, ancient history, textiles, archaeology, zoology and so on. Which in my opinion makes it super cool and awesome, but I know from the way most people's eyes glaze over that they don't always agree. If you're not one of the normal people, here is a bit of a list to make it easier for my fellow nerdlings to research. Consider this my bibliography :).

PS I don't even know which citation style to use because there are a lot of different disciplines. And I hate that crap, having gotten a 37% in apa (mla was better). So I'm adding by author, year, article, book or journal, (publisher) for the most part. Or if Rey complains, I'll just edit and make them links.


Barber, E.W. 1995. Women's work: The first 20,000 years. Women, cloth, and society in early times (W W Norton).
This book is easy to read and discusses the development of textile processes from the most ancient times to about 500 bc.

Cardon, D. 2007. Natural dyes (Archetype books). 
This is THE BIBLE of natural dyes. Waaaannnttt 


Guckelsberger, M. 2013. Purple murex dye in antiquity. I can't understand the citation cause it's all something not English and I'm a barbarian :( It's on academia.edu. This one has a lot of the ancient sources mentioning dyes, Including Pliny the Elder. 

Whiston, W (translator). 2009.  The Wars of the Jews or History of the Destruction of Jerusalem of Flavius Josephus (Project Gutenberg). 
He discusses the colours as symbolic of the universe in Book V chapter 5, section 4.

Koren, Z.C. 2005. The First Optimal All-Murex All-Natural Purple Dyeing in the Eastern Mediterranean in a Millennium and a Half, Dyes in History and Archaeology 20, pp. 136– 149 (Archetype Publications).
 A lot of Koren's research can be found at https://edelsteincenter.wordpress.com. Definitely some cool stuff there. He seems to have done a lot of work advancing Isaac Herzog's contention that tekhelet is molluscan. Also he properly reduced the freakin murex vat unlike some others. That makes him WAY more credible.

Additionally on tekhelet there is the P'til Tekhelet foundation at http://tekhelet.com (This where I got the picture of the blue murex dyed fragment and references to the Babylonian Talmud).

Orna, M. V. 2013 Chemical history of colour (Springer). 
This book discusses all the early pigments and dyes, as well as how we see colour and produce dyes. Also a discussion on the rise of the modern dye industry and its relation to medicine and industry. 

Ruscillo, D. 2002. Reconstructing Murex Royal Purple and Biblical Blue in the Aegean, Archaeomalacology: Molluscs in former environments of human behaviour pp 99-106 (Oxbow Books).
More on producing purple and blue. The repeated discussion of the stank made me lawl. Mem would probably relate this to whenever he is talking about Rey.

Also, besides the murex blue, I got the picture of the murex robe from this site.

I've had the picture of the kermes-dyed mantle for a long time because Alexander McQueen used it in one of his designs as part of his final show, and as you all know I'm waiting for God to miraculously make me that good at sewing so I can copy it. So I'm not sure where I got that particular picture from but it is a pretty famous textile.

I also used bible gateway and the blue letter bible for the references, concordance and words. Usually for things like this I look at the NASB. Heavy on the end of Exodus, also Isaiah 1 and 4 and Ezekiel 44.

One of the things I left out entirely was the contrast between clothing and nakedness in scripture. There is a link, especially in Hosea and Ezekiel, but it just didn't fit and probably would have been another thousand words long. But it is a fun study of its own.