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27
votes
4answers
43k 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 ...
27
votes
2answers
29k views

What does the acronym MOC stand for?

This is a common acronym used in the Lego community - what does MOC mean?
27
votes
1answer
4k 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 ...
26
votes
5answers
16k 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, etc....
26
votes
2answers
24k views

How are LEGO bricks categorized?

What are the names and categories of LEGO bricks? Is there a consistent naming scheme? Does Lego have an official name or identification for different pieces?
25
votes
5answers
76k 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 Erling)...
25
votes
2answers
9k views

How do you repair yellowed or faded Lego blocks?

In particular, I've had white blocks that have yellowed in places. Can the colour consistency be restored? Or at least improved? I'd be more interested in people's actual experiences rather than ...
25
votes
1answer
497 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?
24
votes
9answers
32k views

Is it safe to wash LEGO pieces in the dishwasher?

I've heard from a lot of people that LEGO can be washed in the dishwasher, but I'm concerned about warping, losing stickers, wearing off of painted pieces, etc. Is it safe to actually wash them in the ...
24
votes
5answers
1k views

How do you plan large structures for easy and safe transport to shows?

Imagine I am building a large display that will cover many square feet and have both tall buildings and lots of small details. What are some techniques for making these things modular? Is it safer to ...
23
votes
6answers
5k views

What sets have been named in a punny way?

I heard speculation that set 40358 "Bean There, Donut That" is the only set that LEGO ever produced where the name of the set is also a joke. Is that true? Or are there other sets names that contain ...
23
votes
3answers
856 views

What piece is this ARC-170 Starfighter cockpit?

I got these with the ARC-170 LEGO Starfighter (archived): I'd like to get more if possible. They are a part of the cockpit.
23
votes
4answers
3k views

What is the male:female ratio of gendered minifigures?

For many years now, Lego has provided more detail on the face and bodies of minifigures. One of the effects of this is that the usually visually gender-neutral minifigures of my childhood (with the ...
23
votes
2answers
19k views

How much heat can LEGO bricks withstand?

I was thinking on making a decorative LEGO candle holder. It would be made out of regular ABS LEGO bricks, but also transparent ones. Because there will be an open flame involved, I want to make sure ...
23
votes
2answers
1k 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?
23
votes
2answers
2k 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?
23
votes
4answers
48k 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 ...
23
votes
1answer
2k 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?
22
votes
19answers
14k views

My poor minifig's head is stuck in his helmet!

Recently I made a LEGO race car with a driver who wore a helmet. Unfortunately, after the race, I tried to take off his helmet and his head came off inside the helmet. Any suggestions about getting it ...
22
votes
9answers
6k 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 ...
22
votes
6answers
3k views

Can an axle be removed from this Technic '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 damaging/...
22
votes
5answers
9k views

Why do some minifigs have yellow heads and some are flesh colored?

When did the flesh colors start and why? It seems yellow heads are here to stay too?
22
votes
1answer
28k views

What different types of lego train tracks exist?

I would like to purchase some used lego train tracks off ebay. I am not, however, very familiar with the different choices of track systems are out there that I might come across. So I would like to ...
22
votes
3answers
9k 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 ...
22
votes
1answer
2k views

Did LEGO recently change Millennium Falcon with a smaller kit?

I have been interested in a Millennium Falcon kit but was holding back because of the price.(It was about €500) This was about two years ago. Recently I saw another, cheaper Falcon for about €150, ...
22
votes
1answer
1k 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 ...
22
votes
1answer
684 views

How does LEGO decide it needs a new element?

Aside from the need to add licensed series specific pieces, how does LEGO decide it's time to introduce a new shape to the element palette?
22
votes
1answer
3k views

Where and when did the straight block letter LEGO logo appear on brick studs?

The LEGO logo that appears on the tops of brick studs has had several styles over the years. In the US, when Samsonite began manufacturing LEGO bricks, they apparently made some alterations to some of ...
21
votes
10answers
12k views

How can I efficiently pick up bricks off the floor?

My floor is covered in bricks. My bare feet can't take much more abuse. Is there a way of collecting up the bricks easily, or should I just get on my knees and start scooping them up with my hands?
21
votes
6answers
1k views

What is the basis of purism in LEGO building? [closed]

LEGO purism is the idea that LEGO constructions should be made with only with official Lego blocks with no modifications. Other bits of plastic, papercraft, metal supports, and so on are frowned upon. ...
21
votes
7answers
45k views

Is there a reliable way to determine what minifigure is in a LEGO Minifigures series package?

I would love to have one of each minifigure from the various LEGO Minifigure series. Unfortunately, as you receive a random minifigure in each package, this is more difficult than it should be. I ...
21
votes
3answers
7k 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 ...
21
votes
2answers
1k 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 ...
21
votes
1answer
3k 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.
21
votes
2answers
2k 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 ...
21
votes
3answers
7k views

What is the difference between the NXT and the RCX?

What is the difference between the NXT and the RCX? I know that the NXT is newer, but what features does it have that the RCX doesn't have, and vice versa (if the RCX has features that the NXT doesn't)...
21
votes
3answers
44k 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 ...
21
votes
1answer
3k views

What are LDUs and how do they relate to LEGO bricks?

What are LDUs? I see technical people talking about plans and designs in terms of LDUs. I understand it's a measurement unit. What does it mean and how do LEGO bricks relate to them? Why are they ...
21
votes
1answer
1k views

Why aren't LEGO bricks cubic?

The height of the 1x1x1 LEGO brick is 6/5 times its width. Is there any particular reason for these proportions? And especially why not making a cubic brick (it would have made SNOT building easier)?
21
votes
3answers
6k views

How can I build a functional gearbox?

I'm looking for a fully functional (manual) transmission / gearbox for my Technics motorized vehicle. How can I build this?
21
votes
1answer
597 views

Why do some sets contain parts of an unrelated colour that are hidden on the final model?

With recent and current sets, I noticed that some contain parts of a totally different colour than the rest of the set. An example is 8200-1: Radiator Springs Lightning McQueen, which contains a blue ...
21
votes
1answer
5k 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, ...
21
votes
2answers
1k views

Which sets can be built in the bag (all the parts are in one bag)?

I've had the chance to participate in some "build in the bag" contests at some events. The idea is simple: each contestant gets a small set (usually provided by LEGO for the occasion), and everybody ...
20
votes
3answers
2k 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 ...
20
votes
5answers
3k 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. ...
20
votes
15answers
6k 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 ...
20
votes
5answers
3k 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 ...
20
votes
4answers
9k views

Why does LEGO now use studless technic designs?

It seems to me that sometime between 1998 and 2006 (between the Mindstorms RCX and NXT), LEGO switched from using studded technic bricks (like this:) to studdless beams (like this): In my experience,...
20
votes
4answers
5k 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 ...
20
votes
2answers
4k views

What is the name/number of this LEGO brick, used to make “cat eyes”?

Could anyone please tell me the name/number of the LEGO component used for the cat's eyes?

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