Trim Solids

[robinfly]

I am having trouble trimming 2 solids to the same surface in Autocad 14. What is the best method to trim or create the image in the attached DWG. I need to be able to have the center of the tube section hollow and protrude through the top and bottom flange.

This is a weldment that I need to make. It allows product to pass through the center.

Please see attachment.

I tried to upload a GIF but had an error doing so.

Thanks.

[rustysilo]

Maybe use the subtract command to remove the cylinder area from the plates?

Or does that remove the cylinder too? If you did the outside of the cylinder first and then the inside you could use subtract and it would remove the area of the interior of cylinder as well as the plates.

[robinfly]

Yes it does remove the cylinder also. It will leave only the portion of the cylinder that intersects with the plates. I've tried using slice and that worked to a degree, but the square plate showed a solid face when shading.

[rustysilo]

I was able to do it by sweeping a circle of the same diameter as the inside of the tube, but 1 - I don't think R14 has the sweep command, and 2 - subtracting it makes it all one entity. Not sure if that's what you want.

[SLW210]

You will need to subtract a solid cylinder, the same diameter as the tube, from the plates to make a hole for the tube.

[rustysilo]

That's what I was thinking. And if you want the parts to remain separate you'll have to subract said cylinder from the plates and then again from the original cylinder as it appears to have a solid area in the middle.
^ disregard. I just double checked and it doesn't have a solid area...

[robinfly]

I will try that SLW210.

Rustysilo I don't know that r-14 has a sweep command, but thanks.

[SLW210]

No sweep in r14.

This what you after? I made 2 cylinders 1 on top of the other and subtracted individually.

[robinfly]

Yes but the section of cylinder sticking out above the plate needs to be trimmed off flush.

By the way how did you create the image you posted

[rustysilo]

SLW, how did you draw the cylinder? Is there a quick way to draw it exactly where it needs to be or do you have to draw it and then move/rotate into place?