Answers.Body: <p>The part is <a href="https://rebrickable.com/parts/73878/window-round-3-x-3-x-2/" rel="noreferrer">Window Round 3 x 3 x 2 (73878)</a>.</p>
  <p><a href="https://i.sstatic.net/O0UZF.png" rel="noreferrer"><img src="https://i.sstatic.net/O0UZF.png" alt="73878" /></a></p>
  <p>It was a new mold for 2021, and one of its first uses was as windows on <a href="https://rebrickable.com/sets/41449-1/andreas-family-house" rel="noreferrer">Andrea's House (41449)</a>.</p>
  <p><a href="https://i.sstatic.net/ul3Bb.jpg" rel="noreferrer"><img src="https://i.sstatic.net/ul3Bb.jpg" alt="Andrea's House" /></a></p>
  <p>This piece can be used on buildings anywhere you'd like a curved window. It is easy to imagine how it could have been used on earlier sets, such as the &quot;curved&quot; windows on the Pet Shop:</p>
  <p><a href="https://i.sstatic.net/iCbtN.png" rel="noreferrer"><img src="https://i.sstatic.net/iCbtN.png" alt="10218 Pet Shop" /></a></p>
  <p>This part introduces opportunities for curved windows, but it continues to use existing window glass. It uses the <a href="https://rebrickable.com/parts/60601/glass-for-window-1-x-2-x-2-flat/" rel="noreferrer">1x2x2 glass (60601)</a>:</p>
  <p><a href="https://i.sstatic.net/wjbae.png" rel="noreferrer"><img src="https://i.sstatic.net/wjbae.png" alt="60601" /></a></p>
  <p>This means that the part is also compatible with other window panes, such as the <a href="https://rebrickable.com/parts/38320/bars-for-window-1-x-2-x-2/" rel="noreferrer">1x2x2 bars</a>:</p>
  <p><a href="https://i.sstatic.net/M75D7.png" rel="noreferrer"><img src="https://i.sstatic.net/M75D7.png" alt="38320" /></a></p>
  <p>These parts are paired together to create the curved window seen in <a href="https://rebrickable.com/sets/76389-1/hogwarts-chamber-of-secrets/" rel="noreferrer">Chamber of Secrets (76389)</a>:</p>
  <p><a href="https://i.sstatic.net/CDqIn.jpg" rel="noreferrer"><img src="https://i.sstatic.net/CDqIn.jpg" alt="76389 Tower Window" /></a></p>
  <p>Like most parts, there's plenty of ways to use it. It shows up as fences in <a href="https://rebrickable.com/sets/41447-1/heartlake-city-park/" rel="noreferrer">Heartlake City Park (41447)</a>:</p>
  <p><a href="https://i.sstatic.net/bvASe.png" rel="noreferrer"><img src="https://i.sstatic.net/bvASe.png" alt="https://rebrickable.com/sets/76389-1/hogwarts-chamber-of-secrets/" /></a></p>
  <p>It even gets used to create a water wheel in <a href="https://rebrickable.com/sets/31120-1/medieval-castle/" rel="noreferrer">Medieval Castle (31120)</a>:</p>
  <p><a href="https://i.sstatic.net/WszmW.jpg" rel="noreferrer"><img src="https://i.sstatic.net/WszmW.jpg" alt="31120 water wheel" /></a></p>
  <p>I played around a little with this part at microscale and put together a Mars research station based around the idea of round pods:</p>
  <p><a href="https://i.sstatic.net/o7SL6.png" rel="noreferrer"><img src="https://i.sstatic.net/o7SL6.png" alt="Mars Research Station" /></a></p>
  <p><a href="https://i.sstatic.net/9X5jD.png" rel="noreferrer"><img src="https://i.sstatic.net/9X5jD.png" alt="Mars Research Station top" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-07-26T20:55:57.780Z
Answers.Text: The curved window brick would not have been a good choice for the pet shop: half-hexagonal bay windows were a common feature of the architecture of that period; curved ones were unheard-of.
Answers.UserDisplayName: Mark
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-07-25T20:44:02.573Z
Answers.LastActivityDate: 2021-07-25T20:44:02.573Z
Answers.UserDisplayName: jncraton
Body: <p>I recently came across this piece:</p>
  <p><a href="https://i.sstatic.net/NmDw2.png" rel="noreferrer"><img src="https://i.sstatic.net/NmDw2.png" alt="73878" /></a></p>
  <p>What piece is it, and how can it be used?</p>
  
Tags: <part-identification><piece-usage><activity-support>
Title: What can this curved brick with square holes be used for?
UserDisplayName: jncraton
ThreadText: # What can this curved brick with square holes be used for?
  
  (Asked by: username_0 on 2021-07-25)
  
  I recently came across this piece:
  
  [![73878](https://i.sstatic.net/NmDw2.png)](https://i.sstatic.net/NmDw2.png)
  
  What piece is it, and how can it be used?
  
  **Tags:** part-identification, piece-usage, activity-support
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2021-07-25. Score: 18 | Accepted answer
  
  The part is [Window Round 3 x 3 x 2 (73878)](https://rebrickable.com/parts/73878/window-round-3-x-3-x-2/).
  
  [![73878](https://i.sstatic.net/O0UZF.png)](https://i.sstatic.net/O0UZF.png)
  
  It was a new mold for 2021, and one of its first uses was as windows on [Andrea's House (41449)](https://rebrickable.com/sets/41449-1/andreas-family-house).
  
  [![Andrea's House](https://i.sstatic.net/ul3Bb.jpg)](https://i.sstatic.net/ul3Bb.jpg)
  
  This piece can be used on buildings anywhere you'd like a curved window. It is easy to imagine how it could have been used on earlier sets, such as the "curved" windows on the Pet Shop:
  
  [![10218 Pet Shop](https://i.sstatic.net/iCbtN.png)](https://i.sstatic.net/iCbtN.png)
  
  This part introduces opportunities for curved windows, but it continues to use existing window glass. It uses the [1x2x2 glass (60601)](https://rebrickable.com/parts/60601/glass-for-window-1-x-2-x-2-flat/):
  
  [![60601](https://i.sstatic.net/wjbae.png)](https://i.sstatic.net/wjbae.png)
  
  This means that the part is also compatible with other window panes, such as the [1x2x2 bars](https://rebrickable.com/parts/38320/bars-for-window-1-x-2-x-2/):
  
  [![38320](https://i.sstatic.net/M75D7.png)](https://i.sstatic.net/M75D7.png)
  
  These parts are paired together to create the curved window seen in [Chamber of Secrets (76389)](https://rebrickable.com/sets/76389-1/hogwarts-chamber-of-secrets/):
  
  [![76389 Tower Window](https://i.sstatic.net/CDqIn.jpg)](https://i.sstatic.net/CDqIn.jpg)
  
  Like most parts, there's plenty of ways to use it. It shows up as fences in [Heartlake City Park (41447)](https://rebrickable.com/sets/41447-1/heartlake-city-park/):
  
  [![https://rebrickable.com/sets/76389-1/hogwarts-chamber-of-secrets/](https://i.sstatic.net/bvASe.png)](https://i.sstatic.net/bvASe.png)
  
  It even gets used to create a water wheel in [Medieval Castle (31120)](https://rebrickable.com/sets/31120-1/medieval-castle/):
  
  [![31120 water wheel](https://i.sstatic.net/WszmW.jpg)](https://i.sstatic.net/WszmW.jpg)
  
  I played around a little with this part at microscale and put together a Mars research station based around the idea of round pods:
  
  [![Mars Research Station](https://i.sstatic.net/o7SL6.png)](https://i.sstatic.net/o7SL6.png)
  
  [![Mars Research Station top](https://i.sstatic.net/9X5jD.png)](https://i.sstatic.net/9X5jD.png)
  
  > **Comments:**
  > **username_1**: The curved window brick would not have been a good choice for the pet shop: half-hexagonal bay windows were a common feature of the architecture of that period; curved ones were unheard-of.  
  
  ---
  
  