You just stick the magnetic backing to the existing glass plate for flatness and rigidity. You might have to bump the heated temp 1 or 2 degrees to compensate for the additional thickness, and you may lose a couple of mm/s of print speed at the high end due to the additional weight. That said, it is a very cheap and easy to execute option.

That's what they are saying. Buy a PEI plate with a magnetic backing, remove the rest of the abs from your glass build plate and stick the magnetic pad on it. Then the pei goes on top.

I did this as an upgrade to my own printer.

Every spring there are fewer bugs in our garden, and walking around we see signs on half our neighbors lawns warning about pesticide application. It's ridiculous that on top of the agricultural pesticide use, we even allow residential use... FOR GRASS.

The pollinator garden is coming along nicely though in our yard, and it is one of the busier ones in our area which is nice.

The bearings are much sturdier as the fan is bolted to the motor, and the motor is a generic one meant to be used in any orientation. I personally bought [this](iLIVING 20" Wall Mounted Shutter... https://www.amazon.com/dp/B0BVY8VCNZ) one for my house to cool it in the summer and at half power, every open window in the house has a stiff breeze.

Box fan bearings are not typically designed to run in that orientation. It will probably run for a while before failing prematurely. Might make it a couple months or just a few weeks.

This is a much more robust fan and they come in various sizes to better fit your opening. They move a lot more air, and many styles come with a thermostat and speed controller. Sorry for the Amazon link, this is just the general style: https://a.co/d/bLeBCeD