18
votes
4answers
22k views

What are the dimensions of a LEGO brick?

What are the real world dimensions of bricks? (starting with 1x1 brick) Plates? Studs? Does LEGO think of this in metric or imperial units or something else?
18
votes
5answers
6k views

How can I use more than three motors with one NXT brick?

I'm building Caterpillar Excavator with my NXT, and at the moment I'm trying to control 4 points of motion: 2 Caterpillar Tracks - These should be controlled independently to allow for cornering, ...
18
votes
2answers
2k views

What is an Erling brick?

I have seen people refer to the "Erling brick" or "headlight brick" on LEGO forums. What kind of brick are they talking about?
18
votes
3answers
591 views

What piece is this ARC-170 Starfighter cockpit?

I got these with the ARC-170 LEGO Starfighter: I'd like to get more if possible. They are a part of the cockpit. (I apologize for the poor quality pictures)
18
votes
3answers
3k views

When did Lego decide that it was okay to put a stud into a technic hole?

At one point, Lego didn't really support putting a stud into a Technic hole, stating that it caused too much stress on the bricks. And for a while, there were no sets where that's the case. However, ...
18
votes
2answers
447 views

What is “micro-scale” building?

I have seen references to "micro-scale" building in LEGO documentation. How is this different than the "normal" LEGO building scale?
18
votes
2answers
963 views

Why are LEGO slope bricks textured?

Why is the slope part of bricks textured instead of the usual flat & glossy edge? Are there any non-textured forms of these bricks?
18
votes
3answers
23k views

Where are LEGO parts made?

Are all LEGO parts made in a single factory, or are there multiple factories? Where abouts is it/are they? If there are several, are there different factories for different pieces/sets, or do all ...
18
votes
1answer
893 views

Why are old LEGO bricks more brittle than new ones?

My vintage LEGO sets (circa 1980) are difficult to unbuild. Some pieces are prone to break. Did the plastic recipe change with time or are the bricks simply degrading?
18
votes
1answer
2k views

Why does LEGO state the number of parts on US boxes, but not in Europe?

I was reading Huw Millington's review of set 70700 Space Swarmer on brickset, in which he states: The box is almost square and this being from the USA, like all US boxes but unlike European ones, ...
18
votes
1answer
219 views

Do tools exist to help me translate a real world object to a LEGO design?

It can be a big challenge to create a design for a large object. Are there techniques or tools to simplify this, and to help estimate numbers of blocks required?
17
votes
6answers
1k views

How can I easily remove a jumper plate without a brick separator?

How can I easily remove a jumper plate? I find a it very difficult to remove this kind of brick with a brick separator.
17
votes
3answers
1k views

What causes these 'bite marks' that appear consistently on new bricks?

I purchased a set (second hand) which has the following defects on the 75°-sloped, inverted 2x1x3 blocks: I assumed they were teeth-marks and asked the seller for replacements, and he found and ...
17
votes
5answers
979 views

Can an axle be removed from this 'brick paradox'?

This blogpost on Technic Bricks briefly explains a few 'brick paradoxes' or dead ends. This particular model seems impossible to disassemble by hand: How can I remove the axle without ...
17
votes
3answers
6k views

How many different colours of LEGO bricks are there?

Excluding translucent pieces, how many colours of official LEGO bricks are there?
17
votes
2answers
8k views

What does the acronym MOC stand for?

This is a common acronym used in the Lego community - what does MOC mean?
17
votes
4answers
5k views

How to calibrate NXT motors to travel the same distance?

The motors included with the NXT are not all created equal - when given the same input power level, they do not always go the same distance or turn at the same rate. I measured this by creating a ...
17
votes
2answers
834 views

What are the practical bounds of a minifigure?

I want to make some minifigure-scale vehicles and devices, but I am wondering what the smallest possible minifigure enclosure might be. I know minifigures are not perfectly square. Their arms and ...
17
votes
4answers
28k views

What is different between the EV3 Home and Educational sets?

The newly announced LEGO Mindstorms EV3 sets for home and education have some differences, but it isn't clear to me what they are, specifically. It seems that have different sensors, perhaps ...
17
votes
1answer
496 views

Is there a convention for part and/or set numbers?

Is there any rhyme or reason to the way LEGO part are named? Failing that, is there any other sort of taxonomy that we can use to find specific parts? Along the same lines, my impression is that ...
17
votes
1answer
2k views

How can I determine the name of a brick?

Over the vast years of collecting bricks of various sizes and sets, I find that during my free builds I run low on a specific type. How can I go about identifying what the brick is named and what ...
17
votes
4answers
8k views

As of November 2011, should I buy the NXT 2.0 now, or wait and buy the NXT 3.0 later? [closed]

I have played with the original RCX when I was in school, and I'm so in love with it. Now I have just got my first job and I would like to get an NXT robot. However, I saw in this Wikipedia article ...
17
votes
1answer
2k views

Are transparent neon Lego bricks made from a different plastic than usual?

There are several colors of transparent, fluorescent Lego bricks. In particular, "trans neon yellow" and "trans neon orange", introduced in the early 1990s, exist in a variety of specialized shapes ...
17
votes
3answers
943 views

How would you make a good pivot-arm suspension?

I once tried to make a 4 wheeled Lego robot using a pivot arm suspension system. The robot was motorized using 2 Mindstorm (2.0) motors (one one each side). I can't find and original picture but it ...
16
votes
3answers
1k views

How do I build a sloped roof with a 60° rake?

I've seen the sloped roof on the "Winter Village Post Office" and similar using plates, and I want to build a roof with a similar angle: What should I use to ensure they are well attached?
16
votes
4answers
816 views

Which hand is this minifigure extending normally?

I remember more than one argument with a friend over which way LEGO minifigures' hands should be oriented to be correct (with the thumb pointed upward/inward, like a human hand's neutral position). ...
16
votes
5answers
1k views

Useful machines built with LEGO

I am looking for examples of useful machines built with LEGO (probably Technics, NXT etc.). There are many fun project examples and proofs of concept, such as a Rubik cube solver and a Turing machine. ...
16
votes
3answers
4k views

Why does LEGO have a maximum age limit?

I am wondering why do LEGO boxes have a maximum age limit printed on them? My girlfriend has just gifted me LEGO Starfighter (8088) and it has an age range of 8-14. Why not just write 8+? Are there ...
16
votes
5answers
2k views

How can I motorize City-scale wheels?

I'd like to build city-scale (6 studs wide) vehicles motorized with either PF motor or clockwork. The primary problem right now is connecting wheel(s) to motor. Are there small enough LEGO wheels with ...
16
votes
3answers
4k views

What is the largest Lego kit commercially available?

I believe the Imperial Star Destroyer is the biggest in terms of size, at 58.8 cm by 50.5 cm by 21 cm, and the Death Star in the number of pieces, at 3803. Are there any newer, bigger models?
16
votes
5answers
928 views

Are there any health concerns with letting children use old LEGO kits?

I have a hoard of LEGO kits that passed from me to my nephew, and now to my son. Some of the kits that are included with the set date back to the early 1970's. Are there any health risks with passing ...
16
votes
8answers
1k views

How can a sticker be removed?

In my younger days I may have placed a few stickers on my bricks. Including some that covered multiple bricks. Now my daughter has the tendency to do the same thing :) How can I best remove the ...
16
votes
4answers
3k views

Why are minifigure head studs now hollow?

Comparing my childhood minifigure heads to my post dark age ones, there is now a hollow stud at the top vs the solid ones I grew up with. At what point did this change happen and what was the reason ...
16
votes
5answers
860 views

Technic axle corrosion? What happened here?

I got my LEGO from storage from when I was a kid (1980s) and while almost all bricks are in good condition, the Technic axles are in a pretty bad shape. They seem to have corroded(?). Please see the ...
16
votes
2answers
501 views

Minifig rotatable legs on a stick - what is this?

What kind of piece is this? Emboss says "(c)2003 The LEGO Group" and there is a 4303 number below. I browsed Peeron a little but didn't find anything similar. There are two red handles, one rotates ...
16
votes
1answer
2k views

How can I make a working pin tumbler lock?

I'd like to make a working pin tumbler lock out of LEGO bricks. I have already designed a key I'd like to use that should be compatible with five cylinder lock.
16
votes
4answers
4k views

How do you store your built models for long-term display?

My wife and I recently started to re-enjoy Lego and had a lot of fun building the Grand Emporium and a few other pieces but now they're collecting dust and we're lucky enough to have a few spare rooms ...
16
votes
3answers
2k views

Can you program Lego Mindstorms with the Scratch programming language?

My child is learning programming using Scratch in school. Can she program her Mindstorms using Scratch?
16
votes
3answers
26k views

In what ways are LEGO and Megabloks incompatible?

I know that the basic bricks of LEGO and Megabloks fit together, but was wondering if other elements do too. Such as: Plates Rods (Ones Minifigures can hold, not Technic) Right angle (such as ...
16
votes
1answer
882 views

What is LEGO Cuusoo?

Can anyone explain the origins of LEGO Cuusoo project? There isn't a lot of information on the site. It seems to have started in Japan as a way of suggesting ideas for sets but is officially ...
15
votes
4answers
4k views

Are LEGO bricks recyclable?

Yes, I know that it is kind of a dumb question, as no one would want to dispose of LEGO bricks. But it's a curiosity thing: are Lego bricks recyclable?
15
votes
3answers
3k views

Lego set for 17 year old

This might sound a little bit silly, but I'm 17 and I've never built a LEGO toy, so I was looking for a first one, to see what it's about. What sets would you recommend I should look at, that are ...
15
votes
10answers
2k views

What pieces are prone to breaking?

I've had a few pieces break over the years, which was a real bummer as I was not expecting them to. What are some commonly used pieces that are prone to breaking? Pieces that should be handled ...
15
votes
4answers
4k views

How to get started with Mindstorms?

I want to introduce my 8 year old son to Lego Mindstorms. Where should I start? Is there a starter kit which is the best starting point?
15
votes
4answers
4k views

Are all the Magnet minifigs now glued on and how should I remove them?

A couple of years ago (around 2010 I think), I bought a number of the Star Wars magnet sets, as they looked like a (slightly) economical way of buying a number of specialist characters (including the ...
15
votes
4answers
701 views

How many minifigs have actually flown in space?

I want to know how many have been to space (they don't have to have returned.)
15
votes
2answers
718 views

What are the arched things above a wheel called?

I have a bunch of second hand bricks and some are "wheel wells" for the lack of better words. I would like to find out how I use them for example at bricklink, but then I need to find the name for ...
15
votes
2answers
4k views

What is LUGBULK?

I have heard that LEGO have (or had) a programme called LUGBULK whereby clubs can purchase bulk lots of LEGO components direct fom LEGO. Is that true? If so, is it economical and how can I get ...
15
votes
2answers
13k views

How do I print images onto minifig body parts?

I have seen a few custom minifigures out there with images on certain body parts never produced by LEGO. What is the best way to achieve this? I have heard of some people printing out the image on ...
15
votes
3answers
551 views

How should I store unused stickers?

What is the best way to store stickers for future use? I have some unused LEGO sticker sets in plastic bags. The one on top in the bag has become brittle and is flaking.

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