I pinned about 8 quilts out of 230 before I found spray 505 and Elmer's Washable School glue. I love the spray - fast no drying time and expensive, I then discovered washable glue and used a ping pong table to iron the glue mostly dry. I also used a homemade glue with flour and rubbing alcohol - cheap and once again I ironed it mostly dry. Then let them dry over night. I have never had any trouble with anything gumming my machines or needles up. I was lucky enough to have a husband that supports my quilting and I have a long arm now but 505 and Elmer's were my best friends prior to that.