Mk2B Bed Modification for Anet A8

I upgraded my heated bed to a Mk2B heater pcb and borosilicate glass plate recently, thought I'd share the construction information and the printable parts.

Why upgrade? The aluminium plate is heavy, and because it heats up unevenly (hotter in the middle and cooler at the edges) it warps, making printing difficult, especially when you want a 0.1mm first layer.

The borosilicate glass makes an excellent build surface, and because it has a very low coefficient of thermal expansion it stays very flat.

Using larger, M4 screws to support the bed makes it more stable, and more durable.

So, by replacing the stock bed I've saved approximately 300 grams mass in the y axis, and have a very flat build surface. My print quality is excellent and I have no regrets.

You will need:
1x Mk2B heater pcb
1x 213mm x 200mm borosilicate glass plate
1x 100K NTC glass body thermistor
4x M4 x 35mm hex head bolts (or #8-32 x 1.5")
4x M4 (or #8-32) half nuts
4x binder clips
Kapton tape, and s