My lead-in/lead-out, how do I get it to chain the way I want?

[Kawpattie]

Hello. I have a start line that I have extended out past the edge of the material. This leads into a multi-radiused contour that ends with a lead-out of 1 degree more than the lead-in line. When I try to chain them it just ignores the first half of the lead-in line and ignores lead-out line altogether! Can anyone help me? Stephanie Richards

[3R!< W3NG3R]

Try turning the 'infinate look ahead' off.

[Kawpattie]

Well, that worked great for the lead-in, but it is still ignoring the lead-out line. Any more suggestions?

[edmBosto]

Stephanie,

If I understand your post correctly, I believe your having that problem because your lines cross?

If that's the situation trim at least one back the way it was so they don't crisscross and use the lead in/lead out tab in the contour parameters.

[crazy^millman]

Could These chains be arc and on the wrong view? What are your chain options set to? Is it picking up the chain and just not backplotting like you want? Are you using wear or control on the operation?

 

HTH

 

BTW welcome to the Forum.

[Colin Gilchrist]

Yep, Eric has it nailed. The infinite look ahead switch is used to prevent gouging in areas of a contour where there is not enough room to fit a tool into some features. Mastercam will delete the motion where the toolpath "crosses over" itself. Unfortunately, this means that it won't let you create a toolpath that crosses over itself without unchecking that toggle button.

 

Be careful when you do this though, as it changes the behavior of the contour toolpath, sometimes with unintended concequences.

[Kawpattie]

So..... I deleted my lead out(which is not really needed) and left the more important off-the-part lead-in. With the Infinite look ahead toggled off everythings fine. Thanks for the help, Stephanie Richards