Ender-3 and Newbie Upgrades: First Upgrade (Glass)
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As the first thing to buy with the printer, I certainly recommend glass or mirror dimensions 235x235 mm and thickness 3-4 mm.
Reason?
Press pad ( heating bed ) for printers Ender-3 , but Ender PRO-3 is formed by a piece of aluminum plate, which when heated expands and bulges. This makes it very difficult for us to align the print pad and keep the nozzle at the correct distance from the print pad when printing the first layer. To learn more, see the print pad calibration video .
https://www.youtube.com/watch?v=m6fAYD4sY3U
You can buy glass or mirror from any glazier near you.
But keep in mind that the surface will be smooth, and even if you get an almost perfect plane, the grip will get worse. Therefore, I would recommend buying glass with an Ultrabase coating . The Ultrabase layer is a layer that, when heated, thanks to special pores, can hold your print until it cools down to about 40 degrees Celsius.
The 3DLac spray, which is a blend of polymers, also helps with adhesion, keeping your prints warm when nailed. When the temperature of the print pad drops below 40 degrees Celsius, the printout is released.
If you want to try one of the older methods, you can choose for example Kores stick glue , hair spray, water with sugar, etc… etc…