LEGO® Answers Stack Exchange
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1500 questions
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Is there a good way to build a dome on the top of a building?

How can I build a dome on top of a building, similar to a state capital or something similar? The building has a base of 16x24 studs.
calboy
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Is there a functional difference between bricks w/ and w/o bottom tubes?

For instance: 3040a - Slope 45° 2 x 1 - without Bottom Tube and 3040b - Slope 45° 2 x 1 Are both of these always interchangeable? If not, what are the cases where you would absolutely need no bottom tubes?
Patrice Gahide
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Is this LEGO an authentic original?

I found this LEGO piece in a second-hand LEGO stock. I have never seen a brick like this, and I can't even find the LEGO write on it. Is this LEGO brick original, maybe vintage or some kind of special edition or is it just fake?
Simone Chelo
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Custom Power Functions plug design

I'm considering the possibility of making my own Power Functions-compatible sockets for a project. I'm designing a module board for a single-board-computer with motor drivers and would like to encase the SBC and module board in a 3D-printed…
Shadocko
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What about these old houses?

I recently inherited two old Lego buildings. Unfortunately I have virtually no information about the history of them other that they been part of the inventory of an old hardware store closed a decade ago. By the look of them I would guess they are…
UlfR
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What are the differences between the two available pizza elements?

In the "Buy pieces" section of the Lego website, I looked up the pizza element. It turns out there are actually two of them! Element 6102555 costs $0.41/piece and 81867 costs $0.37/piece, but they have identical images on the website. What are the…
Thane Brimhall
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What is the "Module" of a LEGO gear?

Module, m this indicates the tooth size and is the number of mm of pitch circle diameter (p.c.d.) per tooth. For gears to mesh, their modules must be equal. Gear ISO standards and design methods are now normally based on the module. EG a gear…
user2813274
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Is LEGO Junior compatible with regular LEGO?

Does LEGO Junior fit with regular LEGO? Say for 8-12 year olds? I want to make sure it is not obsolete and can be used as the child grows alongside the LEGO collection.
Michelle
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Best way to match minifigs and tell what set they are from?

What is the best way to match minifig torsos, legs, heads? Is there a listing of all LEGO minifigures? I have a lot of minifigs with torsos and legs but have no idea which head goes with it. Sometimes I can't even match torsos with legs :). Is there…
Kayla
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Strongest LEGO structuce - (1) Pillars

What is the strongest LEGO structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest LEGO structure" question. Using the structures in…
midnite
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How to build a limited slip differential?

Lego provides a couple of ways for building a differential, such as this: and also provides a limited-slip gear like this: http://www.brickowl.com/catalog/lego-technic-differential-with-one-gear-28-tooth-bevel-with-open-center-62821 What's the…
user2813274
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Brick labels to be printed

I am new to the LEGO "business". But I am building up my inventory, getting close to 100.000 pieces now, and before shooting off, I want to have my "system" organized. That also includes print off labels for every small part, to glue on the separate…
Bjorn Kaupang
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1 answer

Is my Lego Star Wars "Jabba's Sail Barge" set a one of a kind?

Back in 2006 or 2007 I bought a Lego Star Wars "Jabba's Sail Barge" set. When I opened it and took out the instructions, it had an additional piece of paper. It showed that the piece 4299023 had been replaced with a normal solid piece. I am writing…
Julian
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Can I share/download a wishlist on Bricklink?

I have a whole set in a wishlist in BrickLink and I would like to share it with some friends. Can I either: Share the list via BrickLink so they can use it directly. Download it in XML so they can upload it to their wishlist. If I can do them,…
Ander Biguri
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Which BIONICLE combiner sets do official instructions exist for creating?

There is a diversity of BIONICLE combiner sets (sets made by combining multiple individual sets together) for various groups including Toa, Matoran, Bohrok, Rahkshi, Dark Hunters, and a number of Rahi species, listed here. They're encountered in the…
LegoSonicBoy
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