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Some fabrics have a lot of excess dye which can cause discoloration on other
fabric but also on your sewing machine. This discoloring may be very diffi cult or
impossible to remove.
Fleece and denim fabric in especially red and blue often contain a lot of excess dye.
If you suspect that your fabric/ready-to-wear garment contains a lot of excess dye,
always pre-wash it before sewing/embroidering to avoid the discoloring.
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