BPO: Colored Background

תיאור השירות

How does it work, quick overview. Your target piece is pre-mordanted with ferrous sulfate, copper sulfate or alum. In this module you learned how to mordant your target piece. ​Your blanket is lightly mordanted (optional) and soaked in dye, in this module we are using logwood. ​You will place your leaves on the target piece, if the leaves are bottom or top facing fabric will depend on your mordant! (see below) ​Cover your target piece with the dye blanket. Cover this with a barrier and roll this sandwich to be steamed or boiled for around 90 minutes. ​Do not forget to note your details in a botanical print sheet and keep them with your test results. What dye to use In this module you will learn how to create a colored background for your fabrics by making a sandwich with a blanket soaked in natural dye. Not all dyes work well as a dye blanket. For example Lac hardly transfers, but walnut is lovely, Madder can be a hit or miss but Sappan wood is a stunner. As you have understood by now, I am a big fan of sample making before doing large works. So I highly recommend trying different natural dyes and making 20cm test strips and to save them for further reference in your dye library. We will work with 20% WOF but of course, you can try with 10`% or less for lighter shades or 30% for real dark Logwood. For other types of natural dyes you will need different WOF. Extracts are always stronger than powders so you will need less of the former. What is Logwood? As a dye we will use logwood, because it is so easy to use, works well with this technique and is widely available for most people. Logwood natural dye powder comes from the heartwood of the logwood tree, Haematoxylon Campechianum. Other names: Campeche, spiny tree, bloodwood, "Uitzquauitl" in Nahuatl Aztec and "Huitzcuahuitl" in Nahuatl Aztec. The tree grows in South America, but has become hard to come by lately due to political instability of the region. You should always make sure you get your products from a sustainable farm. Logwood comes in chips, powder and extract. The powder is much much stronger than the chips, but notoriously hard to rinse from your fabric. A range of wonderful colours can be produced by the "Bloodwood tree" including blue, black, purple, dusty purple and reddish purple. This depends on the mordants we are using. Adding acid will shift the bath to coppery browns and we use soda ash to avoid this.