unless it is in a climate controlled printing environment when the part begins to cool the adhesive of subsequent printed sections is diminished and can compromise the integrity of the final printed part additionally if parts of the part cool at different rates the part may end up deforming or with a partial deformation with can also compromise the integrity of the final printed part or render it useless to avoid these problems with stage printing the 3d printer can be equipped with infrared heating lamps or other directed heat sources such as lasers or xy projectors to ensure the entire printed segment or areas where adhesion must be improved due to temperature loss can be spot heated to ensure integrity of the final and complete printed part by using spot heating the chamber used by some 3d printers can be eliminated resulting in a larger work area and the ability to print larger models additionally the heating elements can be adjust to provide flash heating of key spots on a previously printed stage of the part to ensure adhesion when new sections are printed in subsequent stages spot heating of certain parts reduces the probability of warping or deformation of the entire printed parts resulting in more accurate printing of large parts of parts requiring multi stage printing in another embodiment the partially printed part may be scanned and then either coated having something inserted into an open cavity or have a surface milled to provide a smooth surface for further printing it is not uncommon for a partially printed part to cool and change dimension typically shrinking in size as a partially printed parts cools the surface will also.