Answers.Body: <p><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=18653&amp;idColor=63#T=P&amp;C=63" rel="noreferrer">Part 18653 Brick, Arch 1 x 3 x 2 Inverted</a>
  <a href="https://i.sstatic.net/xnRJW.png" rel="noreferrer"><img src="https://i.sstatic.net/xnRJW.png" alt="Part 18653 Brick, Arch 1 x 3 x 2 Inverted" /></a></p>
  <p><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=30099&amp;idColor=63#T=P&amp;C=63" rel="noreferrer">Brick, Arch 1 x 5 x 4 Inverted</a>
  <a href="https://i.sstatic.net/LazNO.png" rel="noreferrer"><img src="https://i.sstatic.net/LazNO.png" alt="Brick, Arch 1 x 5 x 4 Inverted" /></a></p>
  <p>And <a href="https://www.bricklink.com/v2/search.page?q=arch%20inverted#T=A" rel="noreferrer">a few other inverted arches</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-07-02T13:25:45.043Z
Answers.Text: 18653 is close, but too tall. Hoping for more of a gradual slope for the edge chines.
Answers.UserDisplayName: Bruce West
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-07-02T00:44:31.120Z
Answers.LastActivityDate: 2020-07-02T00:44:31.120Z
Answers.UserDisplayName: Craig
Answers.Body: <p>There's also these large pieces used in some Sports sets.</p>
  <p><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=43085#T=C" rel="noreferrer">Sports Arena Section / Skateboard Ramp</a>:</p>
  <p><a href="https://i.sstatic.net/dF0xn.png" rel="noreferrer"><img src="https://i.sstatic.net/dF0xn.png" alt="enter image description here" /></a></p>
  <p><a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=43086#T=C" rel="noreferrer">Sports Arena Section / Skateboard Ramp Corner</a></p>
  <p><a href="https://i.sstatic.net/xwDjs.png" rel="noreferrer"><img src="https://i.sstatic.net/xwDjs.png" alt="enter image description here" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-07-02T18:13:53.170Z
Answers.LastActivityDate: 2020-07-02T18:13:53.170Z
Answers.UserDisplayName: Alex
Answers.Body: <p>For the concave shapes that go underneath, there are a lot of <a href="https://www.bricklink.com/v2/search.page?q=arch%20%20-pattern#T=P&amp;P=3" rel="nofollow noreferrer">bridges and archs</a> from LEGO.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-07-02T10:12:54.470Z
Answers.LastActivityDate: 2020-07-02T10:12:54.470Z
Answers.UserDisplayName: Sir Cornflakes
Body: <p>Do you know if anyone has ever made any concave slope pieces? Looking for multiple lengths (2/3/4/5/6 stud lengths). Basically the opposite of this style: <a href="https://i.sstatic.net/J9ZTB.jpg" rel="noreferrer"><img src="https://i.sstatic.net/J9ZTB.jpg" alt="enter image description here" /></a></p>
  <p>I would also be looking for the same concave shapes, which would go underneath, similar to this: <a href="https://i.sstatic.net/cC12i.jpg" rel="noreferrer"><img src="https://i.sstatic.net/cC12i.jpg" alt="enter image description here" /></a></p>
  <p>The first example is a graduated curve, the bottom seems to be more of a constant curve. I would prefer graduated if possible, but in the concave direction, with the shallower slope at the bottom, steepening towards the top.
  If not, does anyone know anybody that makes custom shapes or pieces?
  <a href="https://i.sstatic.net/VJNI3.jpg" rel="noreferrer"><img src="https://i.sstatic.net/VJNI3.jpg" alt="enter image description here" /></a></p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-07-02T10:15:08.210Z
Comments.Text: For ready-made pieces, see the answers below. But you can also emulate a concave slope by combining straight slope pieces of different angles.
Comments.UserDisplayName: Sir Cornflakes
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-07-02T13:24:44.693Z
Comments.Text: Trying to avoid using any straight slopes at all. Wondering if anyone can custom make a piece.
Comments.UserDisplayName: Bruce West
Tags: <slope>
Title: Do any concave slopes or curves exist? Any brand
UserDisplayName: Bruce West
ThreadText: # Do any concave slopes or curves exist? Any brand
  
  (Asked by: username_0 on 2020-07-01)
  
  Do you know if anyone has ever made any concave slope pieces? Looking for multiple lengths (2/3/4/5/6 stud lengths). Basically the opposite of this style: [![enter image description here](https://i.sstatic.net/J9ZTB.jpg)](https://i.sstatic.net/J9ZTB.jpg)
  
  I would also be looking for the same concave shapes, which would go underneath, similar to this: [![enter image description here](https://i.sstatic.net/cC12i.jpg)](https://i.sstatic.net/cC12i.jpg)
  
  The first example is a graduated curve, the bottom seems to be more of a constant curve. I would prefer graduated if possible, but in the concave direction, with the shallower slope at the bottom, steepening towards the top.
  If not, does anyone know anybody that makes custom shapes or pieces?
  [![enter image description here](https://i.sstatic.net/VJNI3.jpg)](https://i.sstatic.net/VJNI3.jpg)
  
  **Tags:** slope
  > **Comments:**
  > **username_1**: For ready-made pieces, see the answers below. But you can also emulate a concave slope by combining straight slope pieces of different angles.  
  > **username_0**: Trying to avoid using any straight slopes at all. Wondering if anyone can custom make a piece.  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_2 on 2020-07-02. Score: 9
  
  [Part 18653 Brick, Arch 1 x 3 x 2 Inverted](https://www.bricklink.com/v2/catalog/catalogitem.page?P=18653&idColor=63#T=P&C=63)
  [![Part 18653 Brick, Arch 1 x 3 x 2 Inverted](https://i.sstatic.net/xnRJW.png)](https://i.sstatic.net/xnRJW.png)
  
  [Brick, Arch 1 x 5 x 4 Inverted](https://www.bricklink.com/v2/catalog/catalogitem.page?P=30099&idColor=63#T=P&C=63)
  [![Brick, Arch 1 x 5 x 4 Inverted](https://i.sstatic.net/LazNO.png)](https://i.sstatic.net/LazNO.png)
  
  And [a few other inverted arches](https://www.bricklink.com/v2/search.page?q=arch%20inverted#T=A)
  
  > **Comments:**
  > **username_0**: 18653 is close, but too tall. Hoping for more of a gradual slope for the edge chines.  
  
  ---
  
  ### Answer by username_3 on 2020-07-02. Score: 5
  
  There's also these large pieces used in some Sports sets.
  
  [Sports Arena Section / Skateboard Ramp](https://www.bricklink.com/v2/catalog/catalogitem.page?P=43085#T=C):
  
  [![enter image description here](https://i.sstatic.net/dF0xn.png)](https://i.sstatic.net/dF0xn.png)
  
  [Sports Arena Section / Skateboard Ramp Corner](https://www.bricklink.com/v2/catalog/catalogitem.page?P=43086#T=C)
  
  [![enter image description here](https://i.sstatic.net/xwDjs.png)](https://i.sstatic.net/xwDjs.png)
  
  
  ---
  
  ### Answer by username_1 on 2020-07-02. Score: -2
  
  For the concave shapes that go underneath, there are a lot of [bridges and archs](https://www.bricklink.com/v2/search.page?q=arch%20%20-pattern#T=P&P=3) from LEGO.
  
  
  ---
  
  