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Topic Closedloft and polyline
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joao56777 View Drop Down
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Joined: 27.Nov.2014
Location: Portugal
Using: Autocad2010
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Points: 13 		Direct Link To This Post Posted: 01.Dec.2014 at 22:13
Yes, I understand very well :) Its very easy and its right.

Thanks for all my friends.
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joao56777 View Drop Down
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Joined: 27.Nov.2014
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Points: 13 		Direct Link To This Post Posted: 02.Dec.2014 at 02:04
Hi,

I have another problem with other drawing.

With the geometry of this drawing is so easy that only need to use the command LOFT. But i can't JOIN (PEDIT) all polylines to make a SOLID. I only need the volume of all block.

I have miss some command, to make this right. that could be easy, i think, but i dont have many experience...

Could you help me?

uploads/518478/Bloco_E3-E4_41_135-615_-_41_Betonagem.dwg
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philippe JOSEPH View Drop Down
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Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2017
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Points: 1493 		Direct Link To This Post Posted: 02.Dec.2014 at 10:10
uploads/175428/betonagembloco5_PJH.dwg
 
Hello JoĂŁo, I will take a look at your drawing but :
Primeiro, verifique a fase 3 do desenho anexado para mim criar as extrusões corretas.
O que tem que fazer com :Rede de Refrigeração - Prumadas Ø 1 e 1.2 ?
( Eu so frances mas a minha esposa e brasileira ).
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John Connor View Drop Down
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 12:53
I'm not understanding why you resort to using LOFT to solve the problem.  95% of what you show could be created as a solid by simply using the Extrude or PressPull command.
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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philippe JOSEPH View Drop Down
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Using: AutoCAD Mechanical 2017
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Points: 1493 		Direct Link To This Post Posted: 02.Dec.2014 at 13:41
Yes John is wright.
Loft not predictable in his trajectories to create solids in that case.
I am taking a look at your 2nd file but it's difficult to create region to be extruded because the geometry is not 100% flat and after this the solids to add or remove are not so simple.
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John Connor View Drop Down
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 14:17
If you separate the large, almost square, area from the rest of the drawing you'll find that both the top and bottom polylines are indeed flat.
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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John Connor View Drop Down
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 16:50

A big portion of your drawing created as a solid using the Extrude command.
I'm not sure why you continue to create surfaces first.  Please explain.


Edited by John Connor - 02.Dec.2014 at 16:51
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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John Connor View Drop Down
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 17:10
I think the above may be wrong.  A closer look at your drawing reveals that the bottom and top linework that form the perimeter of the object are not lined up exactly.  Extrude may not be the best command to use although I suspect that Loft will result in surfaces and not a solid.
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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John Connor View Drop Down
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 17:19

OK...this one is better.  I used the Loft command along with the Guides option.  Before lofting I drew a 3Dpolyline at each of the four corners starting from the bottom profile to the top profile.  I think this one is a keeper.  Now to figure out the best way to handle the remainder.


Edited by John Connor - 02.Dec.2014 at 17:27
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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John Connor View Drop Down
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Joined: 01.Feb.2011
Location: United States
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Points: 7175 		Direct Link To This Post Posted: 02.Dec.2014 at 17:27

Success.  Once again I created two polyline profiles (top and bottom perimeter) and lofted them.  No need to use the Guides option either.  At this point they just need to be unioned and MASSPROP run on the resultant solid.

The second smaller section confused me at first until I realized the sides were slightly curved. 

Edited by John Connor - 02.Dec.2014 at 17:27
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>
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