# Unselectable faces

**URL:** https://discourse.shapr3d.com/t/unselectable-faces/3043
**Category:** Modeling Questions
**Created:** [October 18, 2018, 6:47pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043 "2018-10-18T18:47:16Z")
**Posts on this page:** 7
**Page:** 1

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### Author: ![Claudio](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/claudio/32/2337_2.png) [@Claudio](https://discourse.shapr3d.com/u/Claudio)
#### Post date: [October 18, 2018, 6:47pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/1 "2018-10-18T18:47:16Z")

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I have a visible face that can be selected only when I hide the bodies, please check the following pictures:  
 ![10D52267-9262-4D52-87ED-249843DA529D](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/9/9b34cc97842ba40f1f4b04107b2f66cf9b60b9d2.jpeg) ![9D6749DB-ECFB-4397-AEE1-4D35275142B5](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/e/e6c0d4d1d67ba13e15547aadbfd3b5f536f7fa76.jpeg)

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### Author: ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [October 18, 2018, 7:42pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/2 "2018-10-18T19:42:38Z")

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Mhmm… This is by design, because otherwise when you would push in a filling to make a hole, the filling would cover the hole, that was very confusing for many users. So we just hide fillings over holes.

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### Author: ![tommyn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tommyn/32/1714_2.png) [@tommyn](https://discourse.shapr3d.com/u/tommyn)
#### Post date: [October 18, 2018, 8:58pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/3 "2018-10-18T20:58:41Z")

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I noticed this behavior also. Easy to work around…

But I don’t understand your explanation. What is a “filling” and what, in general, is a “hole”?

Just so I understand if/when this happens in other circumstances.

Thanks,

Tommy

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### Author: ![Claudio](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/claudio/32/2337_2.png) [@Claudio](https://discourse.shapr3d.com/u/Claudio)
#### Post date: [October 18, 2018, 9:25pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/4 "2018-10-18T21:25:58Z")

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Thank you Istvan. Do you mean that a face cannot be selected if all of its edges belongs to some body? Can your further clarify your explanation (maybe with an example?)? Why should I be able to extrude all other faces, but not the one in the corner?  
 ![FB7BE9DD-B25A-4C79-852B-35AB948ECAB3](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/4/4a5a2cbb0d47b73ef833cd3b498d238b46d95cfa.jpeg)

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### Author: ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [October 19, 2018, 8:01am UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/5 "2018-10-19T08:01:15Z")

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Filling = sketch fillings, the blue stuff, that is generated automatically from closed sketches.

If all the sketches in a closed sketch overlap with the edges of a body, we hide the fillings.

Eg.: draw a circle on the top of a box. Push it in to create a hole. The sketch is still there, but the filling is not. Otherwise it would cover the hole. If anybody has a suggestion on how to improve this, I promise we will implement it ASAP. 🙂

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### Author: ![Claudio](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/claudio/32/2337_2.png) [@Claudio](https://discourse.shapr3d.com/u/Claudio)
#### Post date: [October 19, 2018, 4:23pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/6 "2018-10-19T16:23:48Z")

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Well, I guess these are just design choices, and once the behavior follow the principle of least surprise, there’s no problem whichever the implementation is.  
But I still have problems to understand this, and when or why the filling disappears — it may be just my case since I am a newcomer in Shapr3d.

Here I tried to follow your example: in the simplest case of a hole through a box, the filling is removed. But just two steps ahead, I have a situation where the filling is “covering” the hole:  
 ![A48999F8-A978-480B-A492-E8BA14379DDB](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex002/uploads/shapr3d/original/2X/b/baca5d62339d568fa395348183beea8c0322e1de.jpeg)

Two things comes in my mind in this case:

1. I am not confused about the filling “covering” the hole, it is clear that there is a hole under the filling, the shades make it clear, so why the necessity to remove it?
2. The circle sketch overlaps with the body, and I am confused to see that is not being removed (or, on the contrary I am surprised to see that in other cases it is).

I am interested to understand the point of view of users that find it useful to remove filling on some circumstances. Sometimes, where the “least surprising” behavior is not clear, a good implementation choice is simply to have it customizable in some advanced option (e.g.: Hide fillings through holes [Yes/No]), with the default set to whatever the majority of users expect it to be.

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### Author: ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)
#### Post date: [October 20, 2018, 4:40pm UTC](https://discourse.shapr3d.com/t/unselectable-faces/3043/7 "2018-10-20T16:40:17Z")

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Actually now that I think about it, I think there is an upcoming feature, that will help us get rid of this behaviour. Stay tuned.
