For the cork fiber and carbon fiber they fit so snug you don’t need adhesive.
For the softer plastics polypropylene and tpu I’m sending them out without adhesive and recommend either a light spray of super 77, or cheap hairspray. Or even a little glue stick.
Thank you for clarifying. I’d be horrified if I blamed YYF or YYF for something that YYF did. Also, Idk what YYF(actory) did (or didn’t?) do. I’m sure I have an idea, but the second I see YYF, my eyes start blurring.
I had also forgotten about YYFreaks when I was discussing this with someone, and boy howdy did my argument become even more rock solid.
Also, that differentiation is not a hard rule; it tends to be more of an unspoken guideline that nobody knows. Honestly, I don’t even pay attention anymore if I see a ‘F’ appended to two ‘Y’. Life’s too short.
To make matters worse, I’m almost positive there’s another (ie fourth) YYF
YoYoFreaks had some pretty cool stuff. There was a really fun POM called the Sharp, and they had a sick undersized bi-metal called the Hashtag that was pretty solid. Their big thing was the “hundred series” where they would only make one run of each model, limited to 100 pieces only, and never made again afterwards.