In use, {TAIL ~ the vacuum} develops a reduced pressure adjacent the inner conditioning surface to cause an outer surface of the malleable molded plastic part, locatable within the cooling tube assembly, to contact {HEAD ~ the inner conditioning surface} of the porous insert so as to allow a substantial portion of the outer surface of the malleable part, upon cooling, to attain a profile substantially corresponding to the profile of the inner conditioning surface 
In use , { TAIL ~ the vacuum } develops a reduced pressure adjacent the inner conditioning surface to cause an outer surface of the malleable molded plastic part , locatable within the cooling tube assembly , to contact { HEAD ~ the inner conditioning surface } of the porous insert so as to allow a substantial portion of the outer surface of the malleable part , upon cooling , to attain a profile substantially corresponding to the profile of the inner conditioning surface
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