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How to make multi tubes/cylinders a slope

Anonymous

How to make multi tubes/cylinders a slope

Anonymous
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Hi everyone,

 

I'm current drawing a fence, and the height of that fence starts from 1800mm to 3000mm. Is there anyway I can make the top a slope without extruding them one by one? Since that fence has 2100 parts, doing that one by one will be really time consuming, so if anyone has any ideas please share, anything helps.

 

Thanks!Slope.jpg

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parkr4st
Advisor
Advisor

draw a surface through the pieces where you want the tops and slice off what you don't want

 

 

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Anonymous
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don't need a surface to SLICE.

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Anonymous
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Do you want the tops of all the posts to be "flat" or sloped to match the angle??

 

If you want them sloped, use the SLICE command with 3 points.

 

If you want them flat, I would (personally) use a block for the posts with the insertion point at the middle of the top of the post, scribe a line at the elevations and place the posts along that line (MEASURE or DIVIDE).

john.vellek
Alumni
Alumni

Hi @Anonymous,

 

Slice is the way I would approach this just as @parkr4st and @Anonymous suggest.

 

@Anonymous is correct that you don't have to draw a surface to do this as you have the option of selecting points. Zaxis, planar objects and the like.

 

I am so rough at 3D though that I like to see the surface and what it looks like before performing the slice.

 

Capture.PNG

 

Click on the link (Slice) above for details or let me know if you need additional help or resources.

Please select the Accept as Solution button if my post solves your issue or answers your question.

'

 


John Vellek


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parkr4st
Advisor
Advisor

nothing is offered as to the alignment of the cylinders.  around a corner(s), up and down hill?  The surface could be a complexly shaped item.

 

OP can post the dwg and then specific help can be given

 

dave

Anonymous
No aplicable

True there seems to be a lot of info missing.  However, if the surface is truly complex, building it simply to cut the tops of the posts seems a bit of overkill, quite a bit of overkill unless the grade surface already exists.  But then again if the surface does exist already a block with the insertion point at grade with the right post height above will still probably be less work than building the surface. 

Anonymous
No aplicable

John,

I understand not being familiar with working with 3D solids, I've been working with them since R12 (not 2012 but R12, DOS 1992) when it came with AME (Advanced Modeling Extension) first run at ACIS solids, so they are fairly second nature to me.

 

For these fence post however, I'm guessing that the tops would most probably be flat and not follow the slope of grade and that poses a little stickier wicket.  The slice might provide a point at which you could could with a subsequent slice in the XY plane for square up the top, but that would be a lot of individual slices.  

 

I still think the best bet is a block, one with the insertion point at grade with a fixed projection above that which can be placed at grade, or a block with the IP at the top center that could be spaced along a path line interpolated from the surface.  That's how I'd tackle it anyway.

john.vellek
Alumni
Alumni

Hi @Anonymous,

 

I agree that reality is sometimes different than the way a question is perceived. A block would be a great way to tackle this problem. Perhaps even inserted by means of an array along a 3D path.

 

The OP asked to make them a slope so that is what I provided but again reality is probably the stronger of the suggestions. Thanks for the input and continued contributions


John Vellek


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Anonymous
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that is what he asked for, but looking at his screen shot the tops appear flat,

 

sometimes what they ask for is not really what they want, right?  :cara_con_una_leve_sonrisa:

john.vellek
Alumni
Alumni

Hi Randall,

 

Hopefully the suggestions get him to where he wants to be - all we can do is try to help


John Vellek


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Anonymous
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Thanks for all your comments, they are all very educational!

 

I was given the attached photo and have to draw the fence. The fence were made with 100mm x 100mm posts (diamond shape), their top needs to be flat. With this extra information is there any suggestion you guys can give? Or should I just go with Randall's method to make them flat?

 

Thanks!

 

View 6.jpg

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Anonymous
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Another option.

 

After creating your post, align your UCS along the top fence line and create a rectangular array with the appropriate spacing. Then rather than slicing or modifying the top (which are now positioned properly) slice off the bottom - or just leave them if the fence top line is parallel to the ground.

 

Fence.jpg

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Anonymous
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I guess I should read all replies before responding. Looks like I'm in agreement with your array approach John.

Anonymous
No aplicable

OK good, tops are flat, that eliminates SLICE, and means a post "block" is in order, but poses additional questions.

 

Is the post spacing critical, and is is evenly spaced in "plan" or along the angled vector?? 2 meters in "plan" is different than 2 meters along the sloped line

 

See, functions like an ARRAY via path or MEASURE or rotating the UCS and using a rectangular array, will provide spacing normal to the sloped vector and NOT to a "plan" spacing.  If your spacing is relative to the sloped line, any of those methods would work, I'm partial to either the ARRAY Path method or MEASURE.

 

However, if the spacing is normal to a "plan" view, it gets trickier and requires either some troublesome trigonometry, or creative construction lines. 

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john.vellek
Alumni
Alumni

HI @Anonymous,

 

It sounds like blocks are probably the best approach to doing this process. There are several options presented. Please add a post with how you decide to proceed and if you need additional assistance.


John Vellek


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