Lego Challenge #21: Oversized Lego bricks

Today’s challenge: Build a couple oversized Lego bricks (using normal-sized Lego bricks)


I’ve learned about a lot of different Lego building techniques in the last couple weeks, but I have also learned about an interesting sub-genre of Lego projects – building popular models at a much larger scale. At the most basic level, folks build each “brick” of a larger model out of many normal-sized bricks. For example, this is a 3x rendition of 924 – Classic Spaceship. The most popular oversized scale seems to be 6x, around which there is a fan community who builds popular official Lego sets at this massively oversized scale. The best example I’ve found is this 6x rendition of the classic 1978 set, 375 – Yellow Castle, one of the first sets to feature the new Lego “Minifigures”. (6x scale really means 6x in all three dimensions – 216 times the overall volume.)

Original Set (left) and 6x model (right).  Photos from Gizmodo.

Original Set (left) and 6x model (right). Photos from Gizmodo.

After completing my project, I found that there is actually a page in the Unnoficial Lego Builder’s guide showing examples of a brick at 4x, 6x, 10x and 12x.

My Project

There aren’t nearly enough bricks in the Architecture Studio set to build a large-scale model of anything beside building a couple simple bricks.

Based on the underlying proportions of the common Lego brick which I determined in challenge #18, I determined that it would only be possible to build a true scale Lego brick with walls and studs of the right proportions if we use a scale which is a multiple of 5. I chose 10x scale, as it was the easiest method I could think of to get the stud height to scale too. I planned to build the walls of the oversized brick normally and build the top stud sideways.

10x scale brick and plate (I used different designs for the studs)

10x scale brick and plate (I used different designs for the studs)

This resulted in an accurately proportioned brick, but the stud isn’t pretty and it’s an important part of the Lego brand. Upon completion of these massive bricks, I understood why people gravitate to 6x scale even if it isn’t perfectly proportioned – you can use pre-existing 4-stud diameter bricks as the stud!

Big brick, small brick

Big brick, small brick

I decided to also try the 6x scale, and I agree that this is a nicer scale to work with. The stud on top looks better since it is actually round. This also allows normal rotation of a brick attached to just one stud. It also uses many fewer bricks to build each brick. I captured a couple photos from this approach as well.

6x scale bricks and plates are more manageable to build.

6x scale bricks and plates are more manageable to build.


This was another good opportunity to think about scale, and reconfirm my understanding of the basic SI units of Lego. I can see why building a *small* set at 6x scale would be fun, although a 6x scale build of something like the Yellow castle would be daunting (and expensive!)

project time: 1.5 hours, since I built them at two different scales.

Today’s post is part of my Lego Architecture Studio 30-day Challenge

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