My ABS prints fall off after about 10 layers, I do notice that the ends are curled up. First layer looks perfect.
I print the same object with PLA and it sticks too well. Using heated bed for both filaments. Bed temp set to about 65 for ABS and 60 for PLA (as per the filament specifications). If the print is completed, I cannot take it off unless I heat up the bed to 60.
I do have a Buildtak surface added to the bed.