The heaviest quilt I've made was a t-shirt quilt. Another heavy one was the denim tumbler quilt (50 tumblers of denim and 50 tumblers of quilting cotton). Concerning your question, I would think that any blanket (even an old used blanket) would be heavy once sandwiched and quilted.
AZ Jane, I love your design!
Last edited by GailG; 07-15-2016 at 02:26 PM.