About diluting the glue...you will have to experiment. I think the longer the glue
sits on the shelf, the thicker it gets. Some use it pure strength. I like to add
a bit of water (maybe 3 parts glue, 1 part water). But I've diluted it a lot more
when I was running out of glue and it still works.

Not to worry, EasyPeezy ... cans of worms can be good ...
And as you said, to each his/her own!

Hearing what others experiences are, are important, and always important food for thought.
Our own experiences are the most important. We can weigh what is right, wrong and best for us.
And from all, we make our decisions as to what is right and works best for ourselves.

OK, my desire to explore kicked in and I went to the source of all knowledge, :D the internet. I use a basting product "SpraynBond" available at JoAnn's, Amazon, Walmart etc., and it clearly says that it washes out of fabric. I also found an article about two spray basting products and using school glue. https://growyourownclothes.com/2015/09/07/does-temporary-basting-spray-wash-out/

For machine EMB projects, I use a very light spray of Sulky KK2000 if needed. I don't spray the whole project, just enough to hold in place. It is temporary and can be removed by ironing the item.

A while ago my 5 year old granddaughter wanted a quilt for her dolly. I grabbed some scraps, including some offcuts of batting trimmed from the edges of quilts I had made and I made a quick little quilt. My granddaughter loved it and liked to sleep with it on her pillow until one day her mother noticed a weird chemical smell in her daughters' hair one morning. I never thought to wash the batting...had forgotten it may have had spray baste on it. As she is a "hot" sleeper, her scalp sweated through the little quilt and picked up the remnants of glue baste still on the batting. Totally my mistake for not thinking to wash the batting first I know. I still feel so cross with myself that I haven't used the spray baste since. I'm too worried I may not wash the quilt thoroughly enough to get rid of all the spray baste after it is completed and a similar thing happen again.

What I currently have is Tailor's Quilt Basting Spray, which I probably bought at Hobby Lobby. It says it works with cotton or polyester batting, and to spray on batting. Amazingly, it does not have any information as to whether it washes out or not! It says it's manufactured in France.

It seems irresponsible not to say whether or not it washes out so not sure I'll buy it again. I'll consult the website and see if more information is available there.

I do love the convenience of spray basting but I worry about the fumes.....and the fallout or over spray on furniture and floor annoys me. If I could do this outside or in a huge well ventilated space, I would, but I don't have that luxury......or equipment. I've used Elmer's straight out of the bottle but don't like the trails and clumps of glue. I may try another method of applying it. Darn, but these aerosol cans of glue are so much easier!

I have Dritz spray. It doesn't say anything about removal on the can.

I used June Tailor when I was volunteering. It was nearly impossible to get off the tables. It didn't dissolve with soap and water, clorox wipes or Windex. We had to use acetone to get it off the tables. I would not use it again.

bkay

I agree with QuiltE in post #7 completely. I love 505 and will continue to use it. As far as "Dry Clean", 99% of clothing I have that says this I launder myself and the items are just fine.

I just read on Amazon, which sells the Tailor Quilt Basting Spray, that if used on cotton, it's washable; if on polyester, it may, perhaps, need to be dry cleaned. My question is does that include polyester batting? Because I often use Mountain Mist polyester batting.

You know, the amount of 505 I use on a quilt is very slight. You don't need much to keep the three layers together and aligned. I have used it for years and never had an issue.