You get a worse bond if it's too cold. as the plastic cools it warps and can crack along the interface between layers. Plastics like abs usually require a heated print bed as well.
I think the ideal solution would allow the entire piece to stay at a elevated temp somewhere between ambient and melting, but blow cool air over the freshly extruded plastic to quickly bring the temp down from the melting point
I think the ideal solution would allow the entire piece to stay at a elevated temp somewhere between ambient and melting, but blow cool air over the freshly extruded plastic to quickly bring the temp down from the melting point