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Trimming a surface

Trimming a surface

Trimming a surface

(OP)
I was sent a number of *.stp files I needed for a design. One imported as "surface bodies". The problem is I have to modify the part by cutting part of it off.

I tried the surface trim tool and it always cuts away exactly the part. No mater what I try its always exactly wrong. For example:

1. I make a sketch of a rectangle surrounding the section of the part I want to cut away. Start the trim tool. Select the sketch. Viola... everything outside the rectangle disappears.

2. Fine, A change in tactics... I make a sketch of a rectangle surrounding the section of the part I want to keep this time. Start the trim tool. Select the sketch. Viola... everything inside the rectangle disappears.

What in the world am I doing wrong?

RE: Trimming a surface

(OP)
I have tried it both ways on both sketches. It doesnt make a difference.

Also, the rest of the part disappearing happens before I select any "pieces to keep" or remove.

RE: Trimming a surface

You can Insert>curve>split line and then delete face
You can extrude the side sketch and use the extrude as a trim tool or mutually trim.

RE: Trimming a surface

Back the truck up a minute here...

Have you tried healing the geometry so it stitches into a solid (assuming the surfaces form a closed volume)?

Import the STEP to a new file.  Without adding any more features, right-click any surface in the feature manager tree and select "Diagnosis".  From the diagnosis tool, you can fix faces and close gaps.  If the gaps all close, SW gives you a solid.

Diagnosis and repair has improved significantly in SW 2004 & 2005 (from 2003).  One of the few things that got more useful.

I could be the world's greatest underachiever, if I could just learn to apply myself.
http://www.EsoxRepublic.com-SolidWorks API VB programming help

RE: Trimming a surface

(OP)
HI Thanks for the help. It took a little while but I was able to use the split line and delete face.

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