Introduction: Lego Menger Sponge

Picture of Lego Menger Sponge

An intriguing fractal shape, build from Lego. This guide is in response to the comments I've received from the original posting on my Lego Menger Sponge page.

Step 1: First Layer

Picture of First Layer

You will need to underpin this layer with flat bricks, to ensure it holds itself together.

Step 2: Second Layer

Picture of Second Layer

Note the rotational symmetry of the pieces.

Step 3: Third Layer

Picture of Third Layer

Step 4: Fourth Step

Picture of Fourth Step

This is the easiest bit, since the towers are all identical.

Step 5: The Fifth Layer

Picture of The Fifth Layer

The top part of the sponge has an identical pattern to the bottom three layers. However, because it must stretch across the gaps, different pieces are often used. Note the 1x8 pieces.

Step 6: Penultimate Step

Picture of Penultimate Step

Step 7: Final Step

Picture of Final Step
And now it's all done!

You can the video of how this look in 3D:


SartiAlyssa (author)2012-12-06

How many bricks are there?

I can't remember, but counting the bricks I guestimate 182. (there's several flat pieces to hold the base together which aren't visible)

Welsh is best (author)2011-12-20

looks cool!.........what is it

SteevAtBlueDust (author)2011-10-27

I was also featured on LEGO Punk! yay!!

rotteneggsaresmelly (author)2007-09-20

Why is it called a sponge if it doesnt soak up water

u can reply 2 urself wow

rotteneggs is awesome

Rock on dude

what does your name mean any way

wait are you weasel

oh I thought you meant my bad. I thought your name was talking shit about my favorite site.

okey dokey im bored

13th =P

erm... congradulations

oh and ur 12th lol u cant count lol

lol my bad ;-\

hehe lol

Seems like an interesting shape, If I had the peices on me i'd try it out. Oh, btw, trying to see how far i can stretch this.

me 2

I wonder how small this gets

its tiny already is this the longest stretched 1 on instuctibles?


hey it cut me off


yummy lol

how yummy?

awwwww it just pushes to the side now

aw. still its crazy cool ..... eggs

dis is kool

Mr Random (author)masterochicken2007-12-14

so why is this shape so special? tihs has to be some instructables record:P

yea i hope so

This could stretch the page

why is your name masterochicken

oh i get it u luv chicken

im happy to say, this is the LONGEST post in instructables :-D!!! P.S. Eat More Manderin Oranges...

woh i was just watching tv eating 2 mandarins freaky huh?

LOL nice :-).

woah... trippy...

masterochicken (author)yutzwagon2007-12-15

I just ate a fried water chicken.

whats a fried water chicken?

a chicken fried in water (not oil)....euk!


It's from a game called Jungle Cock. It's completely racist but hilarious. You play an African-American gentlemen who goes around trying to have intercourse with white women. At one point in the game he expresses his love of fried chicken, then watermelon, then says "mmm fried water chicken"

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