# My Asp exports as manifold, but the polyhedron breaks with Union.

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## My Asp exports as manifold, but the polyhedron breaks with Union.

 I've been reading about manifold shapes, and welds, and such, and was able to build 35 Elite ships that export without incident. I've got 3 - the Asp here is one of them, and I can't get it to survive being unioned with a cube. It becomes non-manifold. I've checked with the "Thrown together" view for incorrect windings, and there is none. I've also checked that there's no polygons meeting midway along a long edge... they all meet at vertices. So as of this point, I've run out of things to check or try - if anyone could confirm the shapes correct I can stop trying to fix it! Many thanks! //----------------------------------------- polyhedron( points=[ [115, -10, 15], // 0 [50, -10, 97], // 1 [90, 16, 27], // 2 [-50, -10, 97], // 3 [-115, -10, 15], // 4 [-90, 16, 27], // 5 [65, -10, -103], // 6 [98, -30, 37], // 7 [-98, -30, 37], // 8 [-65, -10, -103], // 9 [0, 30, -11], // 10 [0, 20, -103], // 11 [18, -10, -103] // 12 ], faces=[ [7,0,6], // a [8,3,1,7], // b [7,6,9,8], // c [6,2,10], // d [5,9,10], // e [11,6,10], // f [11,10,9], // g [2,1,3,5,10], // h [6,11,9,12], // i [9,5,4], // j [8,9,4], // k [3,8,4], // l [4,5,3], // m [1,2,0], // n [0,7,1], // o [0,2,6] // p ] ); translate([0,10,50]) cube(30, center=true); -- Sent from: http://forum.openscad.org/_______________________________________________ OpenSCAD mailing list [hidden email] http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
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## Re: My Asp exports as manifold, but the polyhedron breaks with Union.

That is the problem, can't have a vertex in the middle of an edge.

> -----Original Message-----

> From: Discuss [mailto:[hidden email]] On Behalf Of SarahC

> Sent: Sun, 8 Sep 2019 13:11

>

> Subject: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

>

> I've been reading about manifold shapes, and welds, and such, and was able to

> build 35 Elite ships that export without incident.

>

> I've got 3 - the Asp here is one of them, and I can't get it to survive

> being unioned with a cube. It becomes non-manifold.

>

> I've checked with the "Thrown together" view for incorrect windings, and

> there is none.

>

> I've also checked that there's no polygons meeting midway along a long

> edge... they all meet at vertices.

>

> So as of this point, I've run out of things to check or try - if anyone

> could confirm the shapes correct I can stop trying to fix it!

>

> Many thanks!

>

>

> //-----------------------------------------

> polyhedron(

>

> points=[

> [115, -10, 15], // 0

> [50, -10, 97], // 1

> [90, 16, 27], // 2

> [-50, -10, 97], // 3

> [-115, -10, 15], // 4

> [-90, 16, 27], // 5

> [65, -10, -103], // 6

> [98, -30, 37], // 7

> [-98, -30, 37], // 8

> [-65, -10, -103], // 9

> [0, 30, -11], // 10

> [0, 20, -103], // 11

> [18, -10, -103] // 12

> ],

> faces=[

> [7,0,6], // a

> [8,3,1,7], // b

> [7,6,9,8], // c

> [6,2,10], // d

> [5,9,10], // e

> [11,6,10], // f

> [11,10,9], // g

> [2,1,3,5,10], // h

> [6,11,9,12], // i

> [9,5,4], // j

> [8,9,4], // k

> [3,8,4], // l

> [4,5,3], // m

> [1,2,0], // n

> [0,7,1], // o

> [0,2,6] // p

> ]

> );

>

>

> translate([0,10,50]) cube(30, center=true);

>

>

>

> --

>

> _______________________________________________

 Virus-free. www.avg.com

_______________________________________________
[hidden email]
Admin - email* me if you need anything,
or if I've done something stupid...
* click on my MichaelAtOz label, there is a link to email me.

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work.
Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
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## Re: My Asp exports as manifold, but the polyhedron breaks with Union.

How did I miss that?

Thank you so much! You are wonderful.

I hope this reply works - I'm replying to the email I received from the message board, and I hope it ends up on the OpenSCAD forum pages.

On Sun, 8 Sep 2019 at 04:24, OzAtMichael <[hidden email]> wrote:

That is the problem, can't have a vertex in the middle of an edge.

> -----Original Message-----

> From: Discuss [mailto:[hidden email]] On Behalf Of SarahC

> Sent: Sun, 8 Sep 2019 13:11

>

> Subject: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

>

> I've been reading about manifold shapes, and welds, and such, and was able to

> build 35 Elite ships that export without incident.

>

> I've got 3 - the Asp here is one of them, and I can't get it to survive

> being unioned with a cube. It becomes non-manifold.

>

> I've checked with the "Thrown together" view for incorrect windings, and

> there is none.

>

> I've also checked that there's no polygons meeting midway along a long

> edge... they all meet at vertices.

>

> So as of this point, I've run out of things to check or try - if anyone

> could confirm the shapes correct I can stop trying to fix it!

>

> Many thanks!

>

>

> //-----------------------------------------

> polyhedron(

>

> points=[

> [115, -10, 15], // 0

> [50, -10, 97], // 1

> [90, 16, 27], // 2

> [-50, -10, 97], // 3

> [-115, -10, 15], // 4

> [-90, 16, 27], // 5

> [65, -10, -103], // 6

> [98, -30, 37], // 7

> [-98, -30, 37], // 8

> [-65, -10, -103], // 9

> [0, 30, -11], // 10

> [0, 20, -103], // 11

> [18, -10, -103] // 12

> ],

> faces=[

> [7,0,6], // a

> [8,3,1,7], // b

> [7,6,9,8], // c

> [6,2,10], // d

> [5,9,10], // e

> [11,6,10], // f

> [11,10,9], // g

> [2,1,3,5,10], // h

> [6,11,9,12], // i

> [9,5,4], // j

> [8,9,4], // k

> [3,8,4], // l

> [4,5,3], // m

> [1,2,0], // n

> [0,7,1], // o

> [0,2,6] // p

> ]

> );

>

>

> translate([0,10,50]) cube(30, center=true);

>

>

>

> --

>

> _______________________________________________

 Virus-free. www.avg.com
_______________________________________________
[hidden email]

_______________________________________________
[hidden email]
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## Re: My Asp exports as manifold, but the polyhedron breaks with Union.

Yes, that works. Email is good for inline images BTW, the forum 'changed' and just includes a link to the image.

For debugging this stuff it is also handy to set View/Show-edges, in case you didn't see that option.

From: Discuss [mailto:[hidden email]] On Behalf Of Sarah Cartwright
Sent: Sun, 8 Sep 2019 13:28
Subject: Re: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

How did I miss that?

Thank you so much! You are wonderful.

I hope this reply works - I'm replying to the email I received from the message board, and I hope it ends up on the OpenSCAD forum pages.

On Sun, 8 Sep 2019 at 04:24, OzAtMichael <[hidden email]> wrote:

That is the problem, can't have a vertex in the middle of an edge.

> -----Original Message-----

> From: Discuss [mailto:[hidden email]] On Behalf Of SarahC

> Sent: Sun, 8 Sep 2019 13:11

>

> Subject: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

>

> I've been reading about manifold shapes, and welds, and such, and was able to

> build 35 Elite ships that export without incident.

>

> I've got 3 - the Asp here is one of them, and I can't get it to survive

> being unioned with a cube. It becomes non-manifold.

>

> I've checked with the "Thrown together" view for incorrect windings, and

> there is none.

>

> I've also checked that there's no polygons meeting midway along a long

> edge... they all meet at vertices.

>

> So as of this point, I've run out of things to check or try - if anyone

> could confirm the shapes correct I can stop trying to fix it!

>

> Many thanks!

>

>

> //-----------------------------------------

> polyhedron(

>

> points=[

> [115, -10, 15], // 0

> [50, -10, 97], // 1

> [90, 16, 27], // 2

> [-50, -10, 97], // 3

> [-115, -10, 15], // 4

> [-90, 16, 27], // 5

> [65, -10, -103], // 6

> [98, -30, 37], // 7

> [-98, -30, 37], // 8

> [-65, -10, -103], // 9

> [0, 30, -11], // 10

> [0, 20, -103], // 11

> [18, -10, -103] // 12

> ],

> faces=[

> [7,0,6], // a

> [8,3,1,7], // b

> [7,6,9,8], // c

> [6,2,10], // d

> [5,9,10], // e

> [11,6,10], // f

> [11,10,9], // g

> [2,1,3,5,10], // h

> [6,11,9,12], // i

> [9,5,4], // j

> [8,9,4], // k

> [3,8,4], // l

> [4,5,3], // m

> [1,2,0], // n

> [0,7,1], // o

> [0,2,6] // p

> ]

> );

>

>

> translate([0,10,50]) cube(30, center=true);

>

>

>

> --

>

> _______________________________________________

 Virus-free. www.avg.com

_______________________________________________
[hidden email]

_______________________________________________
[hidden email]
Admin - email* me if you need anything,
or if I've done something stupid...
* click on my MichaelAtOz label, there is a link to email me.

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work.
Obviously inclusion of works of previous authors is not included in the above.

The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
Open this post in threaded view
|

## Re: My Asp exports as manifold, but the polyhedron breaks with Union.

I forgot it had "Show edges" - Thanks!

On Sun, 8 Sep 2019 at 04:44, OzAtMichael <[hidden email]> wrote:

Yes, that works. Email is good for inline images BTW, the forum 'changed' and just includes a link to the image.

For debugging this stuff it is also handy to set View/Show-edges, in case you didn't see that option.

From: Discuss [mailto:[hidden email]] On Behalf Of Sarah Cartwright
Sent: Sun, 8 Sep 2019 13:28
Subject: Re: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

How did I miss that?

Thank you so much! You are wonderful.

I hope this reply works - I'm replying to the email I received from the message board, and I hope it ends up on the OpenSCAD forum pages.

On Sun, 8 Sep 2019 at 04:24, OzAtMichael <[hidden email]> wrote:

That is the problem, can't have a vertex in the middle of an edge.

> -----Original Message-----

> From: Discuss [mailto:[hidden email]] On Behalf Of SarahC

> Sent: Sun, 8 Sep 2019 13:11

>

> Subject: [OpenSCAD] My Asp exports as manifold, but the polyhedron breaks with Union.

>

> I've been reading about manifold shapes, and welds, and such, and was able to

> build 35 Elite ships that export without incident.

>

> I've got 3 - the Asp here is one of them, and I can't get it to survive

> being unioned with a cube. It becomes non-manifold.

>

> I've checked with the "Thrown together" view for incorrect windings, and

> there is none.

>

> I've also checked that there's no polygons meeting midway along a long

> edge... they all meet at vertices.

>

> So as of this point, I've run out of things to check or try - if anyone

> could confirm the shapes correct I can stop trying to fix it!

>

> Many thanks!

>

>

> //-----------------------------------------

> polyhedron(

>

> points=[

> [115, -10, 15], // 0

> [50, -10, 97], // 1

> [90, 16, 27], // 2

> [-50, -10, 97], // 3

> [-115, -10, 15], // 4

> [-90, 16, 27], // 5

> [65, -10, -103], // 6

> [98, -30, 37], // 7

> [-98, -30, 37], // 8

> [-65, -10, -103], // 9

> [0, 30, -11], // 10

> [0, 20, -103], // 11

> [18, -10, -103] // 12

> ],

> faces=[

> [7,0,6], // a

> [8,3,1,7], // b

> [7,6,9,8], // c

> [6,2,10], // d

> [5,9,10], // e

> [11,6,10], // f

> [11,10,9], // g

> [2,1,3,5,10], // h

> [6,11,9,12], // i

> [9,5,4], // j

> [8,9,4], // k

> [3,8,4], // l

> [4,5,3], // m

> [1,2,0], // n

> [0,7,1], // o

> [0,2,6] // p

> ]

> );

>

>

> translate([0,10,50]) cube(30, center=true);

>

>

>

> --

>

> _______________________________________________

 Virus-free. www.avg.com

_______________________________________________
[hidden email]

_______________________________________________
[hidden email]