Answers.Body: <p>Before I attempt to come up with an answer, let me share how I think through problems like this, as it might make it easier for others to solve problems like this in the future.</p>
  <p>We can see that the gap itself is 30 LDU, as modules are 20 LDU, so 1.5 modules is 30 LDU. Some quick rules of thumb:</p>
  <ul>
  <li>Multiples of 20 LDU can be made with regular bricks horizontally</li>
  <li>Multiples of 8 LDU can be made with bricks, plates, and tiles vertically</li>
  <li>Multiples of 4 LDU can be made with clever use of brackets and Erling bricks</li>
  <li>Other numbers require the use of fairly odd pieces</li>
  </ul>
  <p>We see that 30 LDU is not a multiple of 20, 8, or 4, so we'll need some special pieces for this. If we had an element that was 6 LDU thick, we could then make up the difference using 3 plates (30LDU - 6LDU = 24LDU = 8LDU * 3) or one brick vertically. Thankfully, at least one such element exists in the <a href="https://rebrickable.com/parts/3185/fence-1-x-4-x-2/15/" rel="noreferrer">classic fences</a>:</p>
  <p><a href="https://i.sstatic.net/QTJml.png" rel="noreferrer"><img src="https://i.sstatic.net/QTJml.png" alt="Fence 1x4x2" /></a></p>
  <p>We can stack 3 plates or one brick on the center section to perfectly fill our 30 LDU gap:</p>
  <p><a href="https://i.sstatic.net/VbBBZ.jpg" rel="noreferrer"><img src="https://i.sstatic.net/VbBBZ.jpg" alt="parts" /></a></p>
  <p><a href="https://i.sstatic.net/LinN0.jpg" rel="noreferrer"><img src="https://i.sstatic.net/LinN0.jpg" alt="fence and brick together" /></a></p>
  <p><a href="https://i.sstatic.net/tP265.png" rel="noreferrer"><img src="https://i.sstatic.net/tP265.png" alt="final build" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-14T20:53:02.747Z
Answers.Text: Very nice. I remember seeing fences mentioned I'm the unofficial advances building guide online. Maybe Ldraw has a database of dimensions that can be searched through?
Answers.UserDisplayName: qwr
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-14T21:38:41.200Z
Answers.Text: The LDraw parts library is effectively a database of very detailed part dimensions, but I'm not aware of an easy way to search it from something like this.
Answers.UserDisplayName: jncraton
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-14T23:20:37.263Z
Answers.Text: I guess I can also go through stud.io and look for interesting parts. Most are a standard size.
Answers.UserDisplayName: qwr
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-15T17:54:27.960Z
Answers.Text: If you are looking for a smaller part, the minifig neck brackets might work.
Answers.UserDisplayName: jncraton
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-18T04:31:15.773Z
Answers.Text: https://i.sstatic.net/4QLiI.png the neck bracket looks ever so slightly too wide. Given Lego tolerances it probably would work in a real build. Can you add this to your answer?
Answers.UserDisplayName: qwr
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-18T15:49:52.217Z
Answers.Text: @qwr I don't think that will work. You'd need 2 neck brackets + 3 plates (neck brackets are 3LDU I believe)
Answers.UserDisplayName: jncraton
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-21T03:57:27.473Z
Answers.Text: https://i.sstatic.net/OYEsf.png ok it works if I have neck brackets on both sides. But there's still some horizontal gap.
Answers.UserDisplayName: qwr
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-21T13:11:59.340Z
Answers.Text: @qwr It certainly seems challenging to fully fill a gap using neck brackets, even though they provide the needed thickness.
Answers.UserDisplayName: jncraton
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-14T18:08:27.940Z
Answers.LastActivityDate: 2020-08-14T18:34:22.393Z
Answers.LastEditDate: 2020-08-14T18:34:22.393Z
Answers.UserDisplayName: jncraton
Body: <p>How can a vertical 1.5 stud wide gap be filled, for example between this brick on a jumper plate and regular plate? I can achieve ratios multiples of 1/3 and 2/5 with sideways plates, but some trickery (perhaps with headlight brick) has to be used to achieve this 1/2 stud ratio.</p>
  <p><a href="https://i.sstatic.net/2UHwD.png" rel="noreferrer"><img src="https://i.sstatic.net/2UHwD.png" alt="enter image description here" /></a></p>
  <p>(almost right)</p>
  <p><a href="https://i.sstatic.net/0N06U.png" rel="noreferrer"><img src="https://i.sstatic.net/0N06U.png" alt="enter image description here" /></a></p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-08-14T08:55:44.057Z
Comments.Text: The gap between the bricks is 7.5 units (1.5 bricks wide). And that ".5 unit" is the real issue here. There's a small number of parts with 1 unit in size that are somewhat usable. However I cannot think of any 0.5/1.5/2.5/... unit sized parts.
Comments.UserDisplayName: Alex
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-08-14T09:50:42.687Z
Comments.Text: I might have to give up and leave it. The 0.5 unit is 0.8 mm which can probably be overlooked.
Comments.UserDisplayName: qwr
Tags: <building><snot>
Title: How to fill a vertical 1.5 stud wide gap?
UserDisplayName: qwr
ThreadText: # How to fill a vertical 1.5 stud wide gap?
  
  (Asked by: username_0 on 2020-08-14)
  
  How can a vertical 1.5 stud wide gap be filled, for example between this brick on a jumper plate and regular plate? I can achieve ratios multiples of 1/3 and 2/5 with sideways plates, but some trickery (perhaps with headlight brick) has to be used to achieve this 1/2 stud ratio.
  
  [![enter image description here](https://i.sstatic.net/2UHwD.png)](https://i.sstatic.net/2UHwD.png)
  
  (almost right)
  
  [![enter image description here](https://i.sstatic.net/0N06U.png)](https://i.sstatic.net/0N06U.png)
  
  **Tags:** building, snot
  
  > **Comments:**
  > **username_1**: The gap between the bricks is 7.5 units (1.5 bricks wide). And that ".5 unit" is the real issue here. There's a small number of parts with 1 unit in size that are somewhat usable. However I cannot think of any 0.5/1.5/2.5/... unit sized parts.  
  > **username_0**: I might have to give up and leave it. The 0.5 unit is 0.8 mm which can probably be overlooked.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2020-08-14. Score: 18 | Accepted answer
  
  Before I attempt to come up with an answer, let me share how I think through problems like this, as it might make it easier for others to solve problems like this in the future.
  
  We can see that the gap itself is 30 LDU, as modules are 20 LDU, so 1.5 modules is 30 LDU. Some quick rules of thumb:
  
  * Multiples of 20 LDU can be made with regular bricks horizontally
  * Multiples of 8 LDU can be made with bricks, plates, and tiles vertically
  * Multiples of 4 LDU can be made with clever use of brackets and Erling bricks
  * Other numbers require the use of fairly odd pieces
  
  We see that 30 LDU is not a multiple of 20, 8, or 4, so we'll need some special pieces for this. If we had an element that was 6 LDU thick, we could then make up the difference using 3 plates (30LDU - 6LDU = 24LDU = 8LDU \* 3) or one brick vertically. Thankfully, at least one such element exists in the [classic fences](https://rebrickable.com/parts/3185/fence-1-x-4-x-2/15/):
  
  [![Fence 1x4x2](https://i.sstatic.net/QTJml.png)](https://i.sstatic.net/QTJml.png)
  
  We can stack 3 plates or one brick on the center section to perfectly fill our 30 LDU gap:
  
  [![parts](https://i.sstatic.net/VbBBZ.jpg)](https://i.sstatic.net/VbBBZ.jpg)
  
  [![fence and brick together](https://i.sstatic.net/LinN0.jpg)](https://i.sstatic.net/LinN0.jpg)
  
  [![final build](https://i.sstatic.net/tP265.png)](https://i.sstatic.net/tP265.png)
  
  > **Comments:**
  > **username_0**: Very nice. I remember seeing fences mentioned I'm the unofficial advances building guide online. Maybe Ldraw has a database of dimensions that can be searched through?  
  > **username_2**: The LDraw parts library is effectively a database of very detailed part dimensions, but I'm not aware of an easy way to search it from something like this.  
  > **username_0**: I guess I can also go through stud.io and look for interesting parts. Most are a standard size.  
  > **username_2**: If you are looking for a smaller part, the minifig neck brackets might work.  
  > **username_0**: https://i.sstatic.net/4QLiI.png the neck bracket looks ever so slightly too wide. Given Lego tolerances it probably would work in a real build. Can you add this to your answer?  
  > **username_2**: @username_0 I don't think that will work. You'd need 2 neck brackets + 3 plates (neck brackets are 3LDU I believe)  
  > **username_0**: https://i.sstatic.net/OYEsf.png ok it works if I have neck brackets on both sides. But there's still some horizontal gap.  
  > **username_2**: @username_0 It certainly seems challenging to fully fill a gap using neck brackets, even though they provide the needed thickness.  
  
  ---
  
  