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