Because I've been using a rolling pin for a number of years (more than I want to admit to), I would suggest putting a sheet of wax paper between the rolling pin and the quilt sandwich -- reason, even though I wash my rolling pin, I don't immerse it in hot sudsy water. Your rolling pin could have "grease" or "oil", etc. -- You don't want to transfer this to your quilt! I thing I would consider buying a "new" separate rolling pin for using on quilts! LOL Just a thought! "Grease Spots" can be the very devil to get out!
Jeanette Frantz