I'm confused why people are using so many different methods to stick their prints down - just use Elmer's glue. I'm certainly not the only one using it, but it doesn't seem very common, and I don't get why.

I print PETG, PLA, and many specialty PLAs all day and never have prints coming loose or warping, even when they are 20+ inches long. All I do... I drip a little water on the build plate - borosilicate glass plate in my case. Then do some zig zags with Elmer's, and quickly smear it around with a small foam brush. I start preheating the bed at the same time, and in a couple minutes, it's ready to print. When the print is done, I just remove the glass plate and stick it in the freezer for 10 min, and the print is usually just laying there when I come back, or else I just push on it a tiny bit with one finger. Easy.

No clue why people are fighting with purple gluestick, blue tape, hairspray, special print surfaces, special glues, etc. Everything I've tried so far is very simple, except polycarbonate I had to play around with (I'm having to use high bed temps, 130 C+, and special glue or print surface.)

Purple glue stick - Doesn't work at all for me, and I don't understand how it is working for so many people. I can literally blow my prints off the bed. Zero adhesion. Useless.

Blue tape - Prints don't fail, but I get a lot of warping. Also, I don't understand how people have their bed at 60C with blue tape - it just peels up for me?

Hairspray - Works ok sometimes, but often fails.

Special print surfaces - Definitely works, but sometimes impossible to remove prints. Probably my fault for not using hairspray, gluestick, or windex, but why would I do all that? And way too expensive when you screw up and have to keep replacing a $15-30 item.

Special glues - Definitely works, but sometimes very hard to remove prints, and not super cheap.

Elmer's is nearly free and works great for me. Also, no need to reapply each print - just add a few drops of water and swirl it around some more. Also easy to clean - just put it under a faucet or shower and leave it for a few minutes and it's magically clean when you come back. Anyway, you might give it a try if you haven't.