While every attempt is made to ensure that the threads and fabrics are colourfast, and that all loose dye has been rinsed out, please do not assume that this is the case.
If you wish to wash your finished piece then it is best to prewash your threads and fabrics to test for colour fastness.
Always wash in cold or lukewarm water using a very mild detergent, rinse thoroughly in cold water and then lay out to dry.
All fabrics can be machine washed on a 40C cycle using a low spin speed (I use 600rpm). Too high a spin speed can put creases into the fabric that can be impossible to get out.
For threads it helps to leave them to dry on a piece of kitchen towel, if the colours are going to run they will soak into the kitchen towel and you will be able to see if they have run, and how badly. Reds in particular are prone to running so take especial care with these colours.
When washing your finished piece follow the same guidelines until thoroughly rinsed, do not be alarmed if the water starts to colour during washing, simply keep rinsing in cold water until the water runs clear, or nearly so. Next roll your piece up in a clean towel and squeeze as much water out as possible. Finally iron your piece dry on the back, using a pressing cloth if you wish and then leave your piece flat to dry out completely.