I haven’t had chance to iron and photo the logwood samples yet but here are some more photos and some info.
I dyed in two ways
1. In a large cookpot on the stove
2. In rusty roasting trays in the simmering oven.
I buy Logwood extract (an powder) from George Weil who say
”It comes from the Logwood Tree (Haematoxylum campechianum) from Central America and was much sought after in the 17th century. Achieve shades of purple-grey/black with this powdered logwood“.
Well I haven’t ever got black, but purples certainly!
More info here http://en.wikipedia.org/wiki/Haematoxylum_campechianum
First of all I make sure all the fabric is “prepared for dyeing”, either washed at home or purchased from Whaleys.
I soak the fabric in Alum (a mordant to make the colour “stick”) before dyeing. In the large cookpot I dissolve about 4 tablespoons. Don’t ask me how large the pot it. Large.
(Important note here – when I dye with Procion I measure everything, when I use natural dyes I like to play and just let it happen).
So the fabric soaks in alum water for about 30 mins. I have made sure the alum is completely dissolved and the water about boiling level then I switch off the gas.
Results from the pot below;
I drain the fabric from the alum water but don’t rinse it or let it dry. I make up the logwood dye in the cookpot I bring it to the boil and then turn it off.
Then I put the some fabric into the roasting tins – mainly the smaller pieces and I do think about how they are crumpled and laid out. Then I pour the dissolved logwood over, cover with kitchen foil and bake in the oven (60 degrees C) for a few hours. Switch off the oven and leave overnight.
(Note – the roasting tins are old and rusty. I’ve had these two out all winter in all weathers. The rust is important to deepen the colour).
Some fabric goes back into the cook pot plus the dye and is covered and boiled for about 30 mins then the heat turned off and left to cool.
This is how one roasting tin looked – can you see the “gold”? Never seen this before. It washed off but I wonder what caused it.
After washing at 30 degrees (this is for wall pieces so I’m not bothered about removing every single dye molecule) I tumble dry and now have a pile to iron……watch this space.
Safety note – all utensils, pots and such only used for dyeing, wear a mask…. wash hands…. etc etc etc….