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26 August 2025

Brick Round Corner 2 x 2 x 1 (5924) from LEGO® Sonic the Hedgehog™

Posted by Tom Loftus
yellow curved lego bricks

Despite being released in January 2025, Brick Round Corner 2 x 2 x 1 (5924) has been surprisingly absent in sets – but why? Today we try to answer just that, as we analyse the latest member of the macaroni family.


Products in this article were gifted by The LEGO Group; the author's opinions are their own.
This article contains affiliate links to LEGO.com; we may get a small commission if you purchase.

77002 Cyclone vs. Metal Sonic

  • Release date: 1 January 2025
  • Pieces: 290

Price

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Lego Sonic the Hedgehog 77002 Cyclone vs. Metal Sonic

 

Geometry and techniques

3 pictures comparing the new 2x2 curved macaroni with a standard 2x2 macaroni brick and a tile

5924 has the same footprint and reinforced underside as a modern 2 x 2 Macaroni Brick (85080) and 2 x 2 Macaroni Tile (27925). 


the curved slope macaroni next to a straight piece with a matching curved slope

Its other radius matches curved bricks such as this 1 x 2 x 1 Curved Top Brick (37352) – no surprises there either.

Lego Sonic the Hedgehog 77002 Cyclone vs. Metal Sonic
©2025 The LEGO Group

 What is a bit perplexing is that, for a new element as of January, it has only appeared in yellow (6533524) in 77002 Cyclone vs. Metal Sonic. Upcoming sets will change that though – so far we've spotted it in:

Black

White

Light Bluish Gray


Buy Brick Round Corner 2 x 2 x 1 (5924) on Pick A Brick


Why only yellow?

Nine months is a significant hiatus for a new element that isn't even specialised.

4 of the new 2x2 curved slope macaroni in a circle, compared to a similar single 4x4 dome piece. The slope is identical, but the dome has a centre to it.

One possible explanation for its initial scarcity is it's similarly to Brick Round 4 x 4 Dome Top with Round 2 x 2 Recess (79850) – at least when using them in a circle. After all, why use four elements when one would do?


2 constructions showing possible ways to fill the inner curve of the macaroni curved slope

Another possibility is that filling the 1 x 1 quarter round cut-out can be a bit cumbersome. One option is to use parts with 1 module radius such as a 2 x 2 round brick (3941, 6143 – pictured in green above right). Alternatively there's the humble tap (4599, shown in red on the left) with a quarter-tile on top – more compact, but a tad elaborate.


the 2x2 curved macaroni slope compared to 2 other lego curved corner bricks

Its close-ish relatives are comparatively easier to work with, and each sport similar rounded corners:

  • Brick Round Corner, Curved 2 x 2 x 1 2/3 Quarter Dome with 1 Cutout (5906)
  • Brick Curved 2 x 2 x 1 1/3 Curved Top, Corner (67810)

the 2x2 curved macaroni slope alongside a 1x1, a 3x3 and a 4x4 version which all already exist. Together they are arranged like the wifi signal icon.

Minor integration hurdles aside, it's great to see the curved macaroni Wi-Fi icon complete. 


the same 4 sizes of macaroni slope arranged in a spiral

Together the four macaroni make a rather lovely Fibonacci-like spiral.

How about a build that is a bit more substantial?

Micro Slave 1 MOC

Here I used 4 x 5924s for the shoulders of a tiny Slave 1. It's the perfect element for that area of the ship at this scale, so I'll be surprised if we don't see it used in an official set at some point – of course it'll need to be in dark green for that.


the slave 1 patrially disassembled to reveal its construction

Connecting the curved corners was harder than I expected, though admittedly that was mostly due to my choice of windscreen, Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (5489). I ended up pinching them together with rubber bands which, looking at those wands, I'm staggered to say isn't even the most illegal technique I used!

Search PaB for
part 5492
Lego element 6533524

Buy individual pieces from 77002 on LEGO® Pick a Brick

Buy set 77002 on LEGO.com

Lego Sonic the Hedgehog 77002 Cyclone vs. Metal Sonic

 

READ MORE: Build process and play functions of LEGO® Ideas 21360 Willy Wonka & the Chocolate Factory

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3 comments:

  1. Amazing moc, even with these "limit-to-illegal" rubber bands !

    ReplyDelete
  2. they need to make a 1 x 1 quarter cylinder like 68013
    also half and quarter circle plates with studs...

    ReplyDelete
  3. Hah, Slave 1 MOC is so cute. Awesome shapes at this scale. Amazing!

    ReplyDelete