The manufactured obtained with shaving excavation,  will be realized,  in most part, using  grease-cooling  liquid,   that  permits  no  hot  workings  and  simplifies  the manufacturing.   Very  hot  temperature can damage  the  tool  or  deformates  the manufactured part. In the particular picture we execute an hemispheric sight on an aluminium plate;  to  the  right  side  we can see the hemispheric mill using in this manufacturing.