The extension of {HEAD ~ the powder material} for sintering to form {TAIL ~ the thin layer} and the irradiation of the thin layer with laser light for sintering are conducted repeatedly 
for sintering to form
The extension of { HEAD ~ the powder material } for sintering to form { TAIL ~ the thin layer } and the irradiation of the thin layer with laser light for sintering are conducted repeatedly
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH