Slicing solids

[Jrose]

Hello Everyone,

 

Quick question. Does anyone know if arcs or curves can slice a solid? I have tried using the regular way but it's not working. Maybe cause my solid is at an angle or not. If anyone knows of a way please send some instructions on how to do it.

 

Thank you,

 

JR

Slicing with curves.dwg

[shift1313]

they can, but with your file there i would extrude your profile down through your box. then use the intersect command. INTERSECT will give you this. Becuase your profile is closed, when you try to create a surface, you get a solid. If you are set on slicing the object you will need to create some lines that can be swept or lofted to create a surface, then use this as a slicing plane.

[Jrose]

Matt,

 

It work just as you specified. The only thing is that i need the other piece. the one that gets deleted when i use intersect. Is the a way to get it done so that i can keep the piece that gets deleted.

[JD Mather]

Is the a way to get it done so that i can keep the piece that gets deleted.

 

Copy before you do anything. You might want to go through the tutorials in my signature.

[Jrose]

Thanks everyone.

 

Matt i worked it out with subrtact and it worked, then i just changed my ucs view and sliced some edges and got it. Thanks for your help.

 

JR

[nialb]

On the subject of slicing things, I am a 2005 AutoCAD jockey and a project I am working on has come to a stop because I can't slice a couple of tubes. The file size is too big to upload here so I have dumped it on a spare web site of mine - http://www.whac.co.uk/images

 

If you look at the drawing There are two curved tubes crossing through a central boss. I have drawn four circles where I need to slice the tubes using the 'Draw/Solids/Slice' command with the objects (circles) as the slice point.

 

My thinking was that I could slice at the first object and keep both sides. Then slice the same tube at the second object and keep the long section and so removing the centre tube section.

 

I used the slice method to trim the length of tube at the corners and it worked fine, I just can't get it to work at the centre position and my logic says that it should work.

 

Any ideas?

 

Thanks

 

Nial

[JD Mather]

Because you have a version before AutoCAD 2007 I don't think Slice is going to give you what you want. I think you need to Extrude along path solid rod to Subtract from your pipes to result in correct cuts. Make sure you copy back-ups to hidden layer so you can re-use or recover if you make a mistake.

[JD Mather]

Actually since I look at it again my first thought was that you were trying to cope the pipes.

 

Now I see where you want to "slice" you could set your ucs to each circle in turn

or

you could simply copy the end connectors and the do Subtract with the copies. Using that method you will end up with three pieces for each pipe. Use the Separate command to separate the three disjointed bodies and then simply delete the center portion.

 

For symmetrical situations you could have simply extude along path needed distance and then array the others.

[nialb]

Thanks JDM. What I ended up doing was deleting the continuous tube and drawing a new poly arc from boss centre to boss centre at the correct curve. I then rotated the UCS to draw the inner and outer diameters of the tube, extruded along the arc path and then subtracted the inner from the outer to give just one tube from inner boss to outer boss.

 

I finally copied and rotated the tubes around the centre plate to each outer boss. Job done The result is here ... http://www.whac.co.uk/images

 

Some of my terminology may be a bit vague in my explanation of how I did it but I have only been playing with the 3D side of AutoCAD for about four or five weeks and I am still finding my way around.

 

Thanks for your input

[shift1313]

Thanks everyone.

 

Matt i worked it out with subrtact and it worked, then i just changed my ucs view and sliced some edges and got it. Thanks for your help.

 

JR

 

 

you got it, subtract is the way to go if you wanted the outside. Also keep in mind that when you use the extrude command it will extrude perpendicular to your profile. If you want something different you can draw a line for your path and either Extrude>Path, or sweep and then use the Subtract command.