It actually IS possible to print on the plain glass on the other side. Many early machines only had glass as a build plate, so that’s valid - especially with various other materials.
The black surface does wear out over time, when you need to replace it, a magnetic sheet + PEI build surface is probably what you want to move to. The biggest problem with the black glass plates is that the surface acts like sandpaper; and it can easily destroy a nozzle with just a short swipe across it.
It actually IS possible to print on the plain glass on the other side. Many early machines only had glass as a build plate, so that’s valid - especially with various other materials.
The black surface does wear out over time, when you need to replace it, a magnetic sheet + PEI build surface is probably what you want to move to. The biggest problem with the black glass plates is that the surface acts like sandpaper; and it can easily destroy a nozzle with just a short swipe across it.