Dyeing to Weave

Sod’s Law for Crafters says that, no matter how big your stash, you still will never have the right material for the project at hand. Having recently started weaving, that saying is more true than ever. All of my non-acrylic yarns are committed to projects and I don’t have quite the volume of silk I’d need for a decent sized warp.

That meant it was time to indulge myself in a bit of ‘necessity’ shopping. Shopping for weaving threads is quite an experience, particularly as a UK resident. ‘wc’, ‘nm’, ‘cc’ are all units you might see, as well as various fractions, weight per length and often, a complete absence of any useful information.

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Trying Procion MX Dyes on Silk

When it comes to colours, I like a palate that could be described as ‘bright and bold’ or, if you were feeling less complimentary, lurid. Typically, I use acid dyes for silk and wool, partly out of habit, partly because I don’t generally spin plant fibres, so haven’t needed to dye them. However, I’ve had a few people now say that if you want the boldest, brightest colours for silks, then it’s Procion MX dyes you need to use.

Procion MX dyes are a type of fibre reactive dye and as they are out of patent, a lot of different manufacturers now make them. There are a few kinds of Procion dyes, but the MX part of the name refers to the cold reactive dyes that are ideal for dyeing silks, cottons and even wood. Probably the biggest distinction between them and acid dyes is that with Procion MX dyes, you don’t need to heat the dye to get it to fix. You also generally dye at alkaline pHs with them too. (It is possible to use them at acidic pHs on silk but that’s not what I’ll be worrying about here.)

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New dyes means new stock solutions, so I started by making up about 5 % dye solutions in a range of different colours. One advantage of acid dyes is they keep very well so you can make up your stock solutions and keep them hanging around in a cupboard until you next need them. Procion MX dyes are not so stable; if you don’t add any acid/alkaline to them, the solutions will last about a week but as soon as you add the soda ash, the dyes start to react much more quickly and will only last a few hours.

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