The cooling tube assembly comprising a porous tube/insert having {HEAD ~ a profiled inner conditioning surface}, and a vacuum structure configured to cooperate with {TAIL ~ the porous tube} 
The cooling tube assembly comprising a porous tube / insert having { HEAD ~ a profiled inner conditioning surface } , and a vacuum structure configured to cooperate with { TAIL ~ the porous tube }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL