[stude8]

I've been drawing a solid model part which I will later machine. I need to change the fillet radius on 2 surfaces from let's say .125 rad to .156 rad. I'm stuck on how to make the change. I'd just like to change it back to a sharp corner then do another fillet but how? Thanks.

[BurrMan]

Depending on the model it will be more, or less complex. You will have to get into unstitching the model, then untrimming surfaces to recover the original, underlying surface. BobCads filleter will "shrink" the underlying surface back sometimes, so some surfaces may not be fully recoverable and may need to be rebuilt.

Can you post the example?

[stude8]

Depending on the model it will be more, or less complex. You will have to get into unstitching the model, then untrimming surfaces to recover the original, underlying surface. BobCads filleter will "shrink" the underlying surface back sometimes, so some surfaces may not be fully recoverable and may need to be rebuilt.

Can you post the example?

Sure. How do I send the .bbcd file? Is it with "manage attachments"?

[jrmach]

R click on .bbcd file and send to compressed file.Send that file through manage attachments

[stude8]

Here it is. (I hope I can do this!)
Actually instead of a fillet I would want to get rid of the (2) .125 radiused surfaces in the front view and just go back to sharp corners.

[BurrMan]

Rats.... Just as I suspected Batman.... Nothing to untrim.

Here's one using geometry:

Unfillet - YouTube

I'll make another where I Extend the surfaces back, and create new planar endcaps.

[BurrMan]

Here's another way:

Unstitch and extend - YouTube

[stude8]

Thank You! I knew there had to be a way. I really appreciate your taking the time to help.