Originally Posted by Sewnoma

Since the lines do sometimes come back after a washing (per my own testing as well as comments here) that tells me it's not washing away completely.

Originally Posted by Peckish

It's very frustrating to have conversations with other quilters and have them completely miss this point when I tell them the marks come back if the quilt gets cold.

Originally Posted by MarleneC

Using the pens and having the quilt or fabric get cold has been discussed many times on I think about every blog I subscribe too. Luggage does not travel in the warmer areas of the plane and I will never put fabric in my freezer.