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Glass is always level, easy to clean, easy to work with.

Aluminium allows for the addition of automatic bed leveling with an inductive sensor and distributes heat a little more evenly.

When printing mostly ABS and PLA, which one is better?

1 Answer 1

I've got a full frame I3 with a glass printing surface, and an A8 with an aluminium surface.

According to my optical thermometer there is a 15 to 20 C temperature loss between the bed sensor and the glass surface at 65 C, which is how hot I have to run the I3 to get adhesion with PLA.

I have not tried printing ABS yet on either printer, but I cannot see getting the glass surface temperature high enough to give good adhesion.

I use dilute PVA adhesive as on both surfaces, but it does not adhere well to the aluminium.