Improved apparatus and methods for forming a layer of material over a surface of {TAIL ~ a previously formed cross section} of a three dimensional object in anticipation of forming a next cross section of the object out of {HEAD ~ the layer} 
Improved apparatus and methods for forming a layer of material over a surface of { TAIL ~ a previously formed cross section } of a three dimensional object in anticipation of forming a next cross section of the object out of { HEAD ~ the layer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD