Lathe ID Finish undercut

[louispregler]

I am trying to finish an ID profile with a small undercut using a full radius insert in a single pass. I cant seem to manage to get this to work. any help would be much appreciated.

[seth.madore · Accepted solution]

This is actually a case where having a toolholder defined will yield the proper result:

 

That said, the graphic display of the holder doesn't look the best (it's missing sections), so it's probably my holder definitions. Which holder are you using, an Iscar search didn't yield any button style holders that permit such an undercut

 

I've shared the file here, let me know what you think.

[louispregler]

Link to Iscar Bar:     https://www.mscdirect.com/product/details/06591820

Link to insert:          https://www.mscdirect.com/product/details/78943628

I tried to define this bar, but was having difficulties. I would love to be able to render this with a toolholder for safety sake.

[seth.madore]

Someday, it will be possible to import vendor toolholder data. That point is a fair bit off, but we're working on it!