I'm considering adding a heated bed to my printer so that I can start using ABS.
But first some questions.
Approximately how many layers is the heated bed useful for?
Lets say you are doing a print that has 200 layers. Does the heated bed affect all 200 layers or is just the first few?
I suspect that it is just the first few - if so is there a way to turn off the heated bed after the first say 20 or 30 layers? I suspect not but I thought I would ask.