Please note that there are many differences possible between thermistors. This may change the print temperatures with different models. It also makes a difference if the printer is enclosed. I have read that PLA with blue painters tape does not need to be heated. Sometimes with heat the object will not stick to the tape, unless using a coating to stick better. I use glass currently, and or kapton tape. On each I have to use between 66 and 71 degrees. However, I use a mix of wood glue and water on my beds. I have not yet tested using ABS. Hairspray made no difference on my setup. I do not have a closed printing area