https://forums.autodesk.com/t5/hsm-post-processor-forum/post-processor-for-isel-ncp/m-p/6091349#M26185 Hi <BR /><BR />The ramp issue is unfortunately still present. When I trey to make a circular hole,&nbsp; the tool makes a number (number of treads?) of circular movements in the same plane, before it moves fast down:-(<BR /><BR />The machine c'ant keep the the work-piece z-zero, when I change tools. It moves the work-piece around 50 mm downwards, which results in a broken tool:-(<BR /><BR />Thanks in advance <BR /><BR />André <BR /> Tue, 20 Oct 2015 19:18:12 GMT Ansunist 2015-10-20T19:18:12Z