I use 505 spray all the time. used to use small safety pins to baste for machine quilting, but one time trying 505 and I was hooked for life. Great stuff!!
The can does say "505 spray and fix". Odorless, colorless, non-acid, will wash out with water, no needle residue, etc.
I don't think I would use a really old can of any adhesive, best to buy new. if you live in a very humid climate, the moisture *may* cause it to unstick if your quilt is in the humidity. (no problem if you are in A/C). I always use Quilter's Dream Cotton batting, or Dream Poly and have no problems. Not sure i would recommend 505 for something like high loft poly bat...I think you may encounter probs with that.
There is a tutorial on our blog about spray basting. I can link you to the blog, but then scroll down until you see pics of the quilt being basted - the date says Wednesday October 21, 2009.
http://quiltersparadisecafe.blogspot...max-results=10
hope this helps!
505 spray for basting
[ATTACH=CONFIG]86788[/ATTACH]