Thanks guys for help, I downloaded and installed verisurf tools, now I must learn how to use it, Its a tool I will use a lot I finally generate my toolpath by selecting the surfaces and center points, the way I was trying since the begining. my problem was that the surface I´m using was made in rhino, and surfaces have a direction, and some surfaces where looking up while others where looking down, and that was that makes my 4th axis make turns (the guy in design put all the surfaces loocking UP, I don´t know rhino) hope this help another user with the same problem I will post some pictures of my molds when drilling

old but NOT grown up: thanks for your contribution I haven´t heard of verisurf, I just look it on youtube and, I don´t know, but it look like it can generate vectors from a surface, but again, I should generate 1500 vector with the verisurf tool and then select those 1500 vectors one by one to get my toolpath, it will take me a lot of time, besides I´m seen verisurf is available since version X5, i´m using mastercam X4 and fore sure my boss will not upgrade our license I must find an answer within the parameters or the 5th axis drill toolpath

Thanks JParis, But since I have about 1500 holes that complicates me, I have also just the position the holes, not the line vector of each hole, I have the surface instead

I´m just started with 4 axis programming, im using mastercam since 2010 Im using mastercam X4 I need to drill around 1500 holes of 2.5mm to an aluminum shell mold with 15mm thickness. Im using a VMC with the A axis paralel to Y axis I need to make the holes orthogonal to the surfaces, or the nearest to orthogonal. some surfaces in the mold have more than 60º of tilt but my 4th axis is restricted to +- 45º (or it will hit the mold to the table) Im trying with "drill 5 axis toolpath", but it does the drill toolpath the way he wants, some drills upside down some at around 90º and warning that "rapid move hit operation surface" in "axis limits" I checked "Y" and set up minimum 45º maximum 135º geometries: output format: 4 axis rotary axis: Y axis entity type: points (selecting points drawed near the surface ) tool axis control: surface (selecting the mold surfaces) tip control: original point Linking parameters: clearance 50mm relative retract 2mm relative top of stock 2mm relative depth -18mm relative I don´t know what am I doing wrong thank you, all help is wellcome