Firstly, dissolve the soda ash with the hot water. Stir 
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to get all the granules dissolved. I have used half a 
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metre of fabric so 2 tablespoons of soda ash is 
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sufficient. Place the fabric into the bucket with the 
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soda ash solution and leave to soak for 15-20min. 
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Hang out to dry and pull it straight to get rid of