A great way to make temporary markings on fabric and other surfaces, and an alternative to using tailor's chalk. These are Air water Soluble Pens . These purple pens produce a line that will always disappear, whether with water or just fading in the air. The pen is available in purple and has two ends, fine and bold. The fine end will disappear quite rapidly, the bold end slightly longer, all based on the amount of humidity within your workroom.
Remember to check regularly and over mark as necessary.
Remember to check regularly and over mark as necessary.