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Questions tagged [piece-information]

For questions asking for information about a known LEGO element/brick. Please include the [part-identification] tag (or another appropriate tag) for questions about unknown elements.

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89 votes
7 answers
243k 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?
Erik Olson's user avatar
  • 4,231
47 votes
2 answers
38k views

How do I identify a LEGO part?

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 of brick. How can I go about identifying what the brick is named and ...
Marco Ceppi's user avatar
27 votes
2 answers
1k 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 ...
SQB's user avatar
  • 1,156
36 votes
2 answers
10k 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?
user avatar
13 votes
1 answer
2k views

Quick way to inventory parts

I have a rather large collection of LEGO elements that are not sorted in any way, and I'd like to keep track of them. There are a few other posts about ways to keep track of elements, and I've looked ...
rivermont - Will B.'s user avatar
33 votes
1 answer
41k views

What different types of LEGO train tracks exist?

I would like to purchase some used LEGO train tracks off of 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 ...
Jessica Brown's user avatar
30 votes
1 answer
6k views

How does the LEGO Super Mario figure know which power up is attached?

The LEGO Super Mario theme includes an intelligent brick that interacts with various other elements present in the sets: There are several Power-up sets available that provide Mario with additional ...
jncraton's user avatar
  • 38.8k
25 votes
2 answers
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 ...
RedRiderX's user avatar
  • 1,399
17 votes
1 answer
8k views

What does imprinted information inside bricks mean?

I just randomly checked the imprinted information inside some of the bricks in my Lego sets and found that it varied. I found several different types of information: Most pieces have Lego copyright ...
Tien Do's user avatar
  • 529
15 votes
5 answers
4k views

Are companies producing custom molded LEGO pieces legally entitled to do so?

We have seen (or I have seen, given I am a member of a few popular BIONICLE fan sites) an uproar from custom molding companies -- that is, companies that create their own LEGO pieces. My question is ...
Purag's user avatar
  • 251
9 votes
1 answer
2k views

What is inside the LEGO Powered Up M motor?

What is inside the M motor in the new Powered Up system? How is it different from the older Power Functions motor?
jncraton's user avatar
  • 38.8k
9 votes
2 answers
2k views

What are LEGO rubber bands made of?

I have noticed that LEGO rubber bands (along with just about everything else LEGO) are fantastically durable. They last ages without getting crusty and dying like most commonly available rubber bands....
PGmath's user avatar
  • 393
3 votes
2 answers
1k views

Part Identification - bricks with posts

I have two unusual lego pieces that came from a collection of used legos that mostly seem to date from the 1970's that I am unable to identify using LDraw's ldfind app. What are these parts, and if ...
Jessica Brown's user avatar
41 votes
5 answers
29k views

What is the largest single LEGO piece?

What is the largest single LEGO piece ever produced? This does not include LEGO affiliates like Duplo. Clarifications It must be a purchasable block. By largest, I mean largest by Volume/Weight of ...
fredley's user avatar
  • 3,204
35 votes
3 answers
11k views

What is inside the "weight element" brick?

I own a few bricks that contain a weight inside of them. 52g according to Lego. What exactly is inside of these bricks that makes them heavy?
Pubby's user avatar
  • 5,206
16 votes
3 answers
876 views

How to find out if an element is out of production

Is there a way to know if Lego has officially stopped making a certain Lego element? As an example, from the 580 Lego set, I haven't seen this conveyor belt (along with those wheels and the "Legoland"...
LarsTech's user avatar
  • 1,793
13 votes
2 answers
2k views

In what set is this brick used?

In which set is this LEGO brick used? There is no number in it and it's original LEGO. The only number on it is "A 1".
Henry's user avatar
  • 131
12 votes
4 answers
1k views

Where to find this green transparent brick?

Where can I find this lego brick? I have one but I want some more of them for a project.
user avatar
8 votes
2 answers
580 views

Connected flexible 2 x 2 white plates - what set?

I'm going through my old Lego collection and trying to identify the original sets they're from. The bulk of the Lego is from the 70s and 80s. I have a piece that is two white 2 x 2 plates joined ...
Scott Smith's user avatar
7 votes
1 answer
1k views

What is this upside down roof peak or boat hull?

Here's another mystery piece from my collection. I'm not 100% sure it's genuine LEGO, but I would love to know whether it is, and if so, what part. It attaches to the bottom of a 2x8 brick securely. ...
Jessica Brown's user avatar
5 votes
1 answer
2k views

When and why were pieces 3651 and 3652 discontinued?

Bricklink has piece 3651 as Axle and Pin Connector, while piece 3652 is Engine Piston Square 2x2. You could attach them to each other to form a piston. Service pack 5260, Connecting Rods and Stop ...
SQB's user avatar
  • 1,156
1 vote
0 answers
1k views

Middle Size LEGO Bricks [duplicate]

Can you settle an argument? I can only find 2 sizes of bricks, Duplo and Classic. My friend swears there is a middle size of Bricks. Help us settle this or we may come to blows.
Paul W. Thompson's user avatar
32 votes
9 answers
8k views

What is the smallest LEGO component?

When I purchase bulk LEGO bricks, one of the first things I do is to tip the whole lot into a mesh bag and give them a good soak in the bath (of course, I remove all the electrical bits etc. first). ...
Kramii's user avatar
  • 9,081
30 votes
3 answers
3k 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?
Pubby's user avatar
  • 5,206
23 votes
18 answers
11k 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 ...
21 votes
3 answers
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 ...
sblair's user avatar
  • 313
20 votes
2 answers
31k views

What are the exact dimensions of a DUPLO brick?

The dimensions of LEGO brick are documented well, but what about DUPLO bricks? If have only found the general statements that DUPLO is twice as large as LEGO but no exact numbers. What about the ...
Jakob's user avatar
  • 1,278
19 votes
9 answers
10k views

What is the rarest LEGO production element (colour/shape combination)?

What is the rarest LEGO element according to the following criteria: Genuine LEGO elements, not those available through third party vendors or otherwise modified elements. (So nothing from Brickarms....
mcqwerty's user avatar
  • 3,518
19 votes
3 answers
5k views

Ø in LEGO part names

Many LEGO part names use a Ø character in the name, for example, Armor For Hand W/Ø 3.2 Shaft (28803) or Beam A 4M Ball/Cup Ø10.2 (90611). Can anyone explain what the Ø means?
Bob's user avatar
  • 191
16 votes
1 answer
2k views

Why does the Erling brick have a ridge below its outward facing stud?

Why does the Erling brick (#4070) have a ridge below its outward facing stud? Whereas the more versatile and less common #87087 does not? The #87087 piece also has a better use in SNOT usage, as it ...
Ambo100's user avatar
  • 17.6k
14 votes
1 answer
4k views

What is the Travis Brick?

This question uses the term "Travis Brick", but I've never heard it before. What is it, and where does the term come from?
Kramii's user avatar
  • 9,081
14 votes
2 answers
3k views

What are all the different ways that LEGO pieces join together?

Has anyone made a list of all of the different types of connections between LEGO bricks? Obviously there's the stud connection - but there's also the ball and socket joint, the more recent click-...
14 votes
2 answers
4k views

How does LEGO handle the breakage of Hero Factory sockets?

My son has a slowly growing collection of Hero Factory figures, and they have accumulated a consistent problem: socket connector cracking. The tips of the angular part of the limb which connects to a ...
JoshDM's user avatar
  • 779
13 votes
2 answers
2k views

What LEGO brick is available in the most colors?

I've read that the most commonly produced LEGO brick is the 1x2 gray plate. I am at the stage in Lego collecting that I'd like to make a Color Chart. This is easier said than done. My question is ...
sampoerna quatrain's user avatar
12 votes
1 answer
5k views

How many hours of travel does it take to wear out LEGO monorail tires?

I've seen some pretty impressive LEGO tire driven/cushioned monorail displays that put miles of wear on the track and the train cars that ride on it. I'm hoping a monorail expert can tell me (about) ...
Major Stackings's user avatar
11 votes
3 answers
6k views

How is the LEGO plastic different from Megablok plastic?

It's obvious that LEGO has better quality control, but what about the plastic they use? Megabloks look cheap and the parts seem to vary in color in a side by side comparison next to LEGO brand ...
Major Stackings's user avatar
11 votes
3 answers
7k views

What is the purpose of this plate with door rail?

I'm looking at the this piece: Is this piece some kind of a track on which you can build stuff that slides? I see it in sets as a decorative piece from time to time. What does "door rail" even refer ...
mj_'s user avatar
  • 1,119
10 votes
2 answers
1k views

Substitutions for vintage hinges

I've recently gotten back into LEGO and I'm trying to restore old space sets (late 80's era) by buying parts on Bricklink. I've noticed that some of the hinge pieces are extremely expensive (e.g. ...
Dragonspell's user avatar
8 votes
3 answers
441 views

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 ...
Thane Brimhall's user avatar
8 votes
7 answers
7k views

What's the smallest LEGO component, based on its largest dimension?

There's already a question asking what the smallest component is. However, according to its answer, the smallest piece would be the screwdriver. It is pretty small, but its length is over 2 studs, ...
SQB's user avatar
  • 1,156
8 votes
1 answer
287 views

What came first? Print or sticker?

Recently I learned that there seems to be no strategy in the LEGO design about when to use stickers and when to use prints in a given set. My question is what LEGO used first to decorate bricks: ...
Aziraphale's user avatar
  • 2,595
7 votes
1 answer
2k views

What is the function of Duplo part# 38507 RAIL ACCESSORY, NO. 4

Can someone explain to me what 38507: RAIL ACCESSORY, NO. 4 (#6225519) is for? I've got this in the new Duplo Train accessory #10882 and can't figure out what it does :S
Nghia Hang's user avatar
7 votes
2 answers
2k views

Pearl gold vs flat dark gold

I've ordered 4 "pearl gold" pieces of part 92690 on BrickLink. Unfortunately, the seller had to adjust the order as he only had 3 such pieces, he proposed adding two more in "flat dark gold" in ...
Michael Verschaeve's user avatar
7 votes
1 answer
1k views

What is inside the Technic Powered Up XL motor?

What components are inside the new Technic Powered Up XL motor? Is it the same as the PF XL motor, except with a different connector?
jncraton's user avatar
  • 38.8k
6 votes
1 answer
874 views

What electronics are inside the SPIKE Prime angular motors?

Is there any information available about the internals of the SPIKE Prime and Robot Inventor angular motors? What Hall-Sensor is used by the SPIKE motors? To be more precise: I'd like to get ...
user18913's user avatar
5 votes
1 answer
595 views

Why does the pin recess on the Technic turntable continue to the edge of the part?

Here's the part in question (2955): While Technic parts typically have a recess to allow the ends of pins to be flush with the surface, this part (and perhaps others) carry this recess all the way to ...
jncraton's user avatar
  • 38.8k
5 votes
2 answers
738 views

How can I distinguish floating versus sinking LEGO pieces?

My kids enjoy playing with their LEGOs in the pool, and we cannot always predict which ones will float and which one will sink. It appears to me that most pieces do float in the pool, but some, for ...
Giuseppe Biondi-Zoccai's user avatar
4 votes
2 answers
910 views

Please identify these two kinds of Lego bricks (circa 1990's)

I recently bought a lot of Lego that was mostly 1990's bricks, and I had a few things I couldn't identify. One I found on Bricklink, but the other two are baffling me. Here is the first one, a ...
sampoerna quatrain's user avatar
4 votes
1 answer
495 views

What are the structural difference between a minifig and a minifig on a keychain?

Are there any differences in the components or construction of keychain minifigs compared with regular minifigs from sets?
fabian's user avatar
  • 1,285
4 votes
2 answers
1k views

What is the difference between these two Technic half bushings?

While randomly browsing some LEGO sites, I came across a weird (to me anyway) looking bushing. Its part 4265c. Below is one of the images describing it and the left one I recognize, but the right one ...
UlfR's user avatar
  • 568