These are, indeed, very interesting and detailed instructions but I honestly don’t think that apply to all end users, as a whole.
And, most of all, according to these instructions, the PEI sheet comes with pre-applied double-sided adhesive tape, which is not very common when you buy thicker PEI sheets.
The most important details I’d keep from these instructions are the baking and the way to detach the adhesive protecting sheets.
The role of the baking is to ensure that there will be tiny, if none, traces of moisture content in the sheet. It’s a plastic sheet after all. And this is important because we would not want to trap moisture between the PEI and the glass that will turn to steam when we heat up the bed and expand and create bubbles and mess things up. A baking temp of about 80-90 celcius (180-190 F) should do the trick.
Personally, I usually apply the 468MP to the PEI first because it’s the hardest “couple” to get together. I like to go crazy pushing down the 468MP on the PEI because I want to make sure that I’ll get all the best and uniform application. After that, I attach it on the glass where the 468MP bonds extremely well and easy. Lately, I replaced the glass with aluminum for temperature uniformity but that’s another story!
In any case, please pay attention when you remove both 468MP protective sheets, especially at the edges. The tape is soooooo thin, fragile and flexible that some times it sticks at the cut sides of the protective sheets and when you pull them off, the tape gets also pulled at the edges and gets damaged and usually… unusable.