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Posted

I would have to take a closer look at your drawing to be able to answer that question.

 

Where exactly are you located? I ask mainly to see what the time difference may be between our two locations. BTW...I have to be away from my desk for a couple of hours but I will check back later.

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Posted

I am in the Spartanburg/Greenville area of SC --- same time zone luckily.

Posted (edited)

Too bad you weren't closer to North Charleston. I may be visiting SC in April. I'd swing by and have a beer with you.

 

So back to your drawing. Looks like you have two objects that are solids...the handle and the two o-rings. Everything else is either a surface or a revolved surface. Typically if you extrude, or revolve, a line or series of lines you'll end up with a surface. If however you extrude, or revolve, a closed (polyline) profile you'll end up with a solid.

Edited by ReMark
Posted

Two examples both showing a revolved series of lines (on the left) versus a revolved profile consisting of a single continuous polyline (on the right). Result = revolvedsurface (on the left) and a solid (on the right). The pale green line you see represents the point I used for revolving the entities.

 

Example 1 (visual style: 2Dwireframe)

 

>3DExample1.jpg

 

Example 2 (visual style: Conceptual)

 

>3DExample2.jpg

 

And here is an example of what the solid would look like if we sliced it in half. Visual style: Conceptual.

 

3DExample3.JPG

Posted

By the way, I like the N. Charleston idea thingy. Maybe fate will step in and something happen.

Posted (edited)
So u are suggesting starting over?

Not necessarily. If you have retained the individual lines that you used to create the surfaces they can be turned into polylines then joined to create a half profile that can then be revolved thus yielding a solid. Other methods of converting surfaces to solids include...

 

-THICKEN

-SURFSCULPT

-CONVTOSOLID

 

I've changed my mind. Start over. I can't quite seem to figure out what you did with the cylindrical objects. Perhaps when I get a moment I'll approach the problem differently.

Edited by ReMark
Posted

OK...let's talk about the vacuum cylinder. I recreated it as a 3D solid model. What I want to know is, where you see the two red circles, is there supposed to be a space between the inner and outer walls? It appears that in your surface model there was. I don't know if that was intentional or not.

 

3DModel_VacCyl.JPG

Posted

Indeed, I tried to simulate a 1/8" space between the two walls thus creating a vacuum. I must have got that part right, else u would not have picked up on it. Ok, I will start over.

Posted

So what is the thickness of each wall supposed to be?

Posted

OK. I think I got it. I created the profile, on the left (in white), turned it into a region using the REGION command then revolved it (180 degrees in this case). The walls are .014 thick and the space between them is .125 as per your posts.

 

Visual style = X-ray

 

3D_VacCyl2.jpg

 

Here is a close up of the upper portion of the cylinder. Visual style = Realistic.

 

3D_VacCyl3.JPG

 

I used the COLORFACES command to change the color of the interior face of the outer wall.

Posted

Wow! I have really got my work cut out now; wonder why the closing radius is not showing up on the bottom?

Posted (edited)

I'm not sure I follow. Closing radius on bottom? Are you saying the bottom pretty much looks like the top (i.e. - rounded)?

 

Next up. What should I know about the object on the bottom housing layer (color = blue)? It appears you used splines to create the object. Is that correct? Also, take a real good, close-up look at the top edge and tell me if you see anything unusual about the way it looks.

Edited by ReMark
Posted

Yes, the bottom will look like the top. I think I used splines toward the bottom of the bottom housing. I will look at the top, as you suggest, but in the mean time do u think it advantageous for me to send u my 2D drawing so u will better understand what we are trying to accomplish?

Posted

Re: Vacuum cylinder. The bottom is curved like the top. OK. Guess I need to make a change to the profile.

 

Re: Bottom housing. Your short splines (that almost look like arcs) do not transition smoothly into the longer splines that form the outer sloped edge.

 

If you'd like to share your 2D drawing that's fine with me. You can just attach it to a subsequent post.

Posted

Would it appropriate that we talk on the phone before I put the file on this forum?

Posted
Would it appropriate that we talk on the phone before I put the file on this forum?

Why not just PM me since you have enough posts now to do so.

Posted

I had to rework the profile of the bottom housing (shown in white on the left) to make this work. I substituted arcs for the splines. It is a 3D solid.

 

3DBottHsng1.jpg

Posted

Got me on the 'PM' --- what do dat mean?

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