Questions asking for information about a known LEGO element/brick. Include the [Identification] tag for questions about unknown elements.

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3
votes
1answer
217 views

Are both these slope designs genuine Lego?

Are both of these slope designs genuine? I am reasonably certain that this is just a mold change at some point, but it doesn't hurt to ask. I also have two textured types in dark blue, and one ...
6
votes
2answers
243 views

Which “Real World” Company was the first to have its' name featured in an actual (numbered) Lego set?

Excluding the Lego company, which "Real World" Company was the first to have its' name featured in an actual Lego set?
5
votes
1answer
569 views

How to build a car that stops at a certain distance?

I want to build a small car that is about 200 grams. I want it to run the following course and stop at exactly or about the the finish line. I can't use any controlling devices or electronics. I've ...
6
votes
2answers
491 views

Are those bowls genuine LEGO pieces?

I've been sieving through my video collection and came across a video from 2011. It's part of a series of Ninjago videos giving you tips on fun things you could do with the Spinners. At the end of the ...
2
votes
1answer
498 views

How to efficiently identify bricks and their names? [duplicate]

I've found http://rebrickable.com/myparts linked in one of the answers here on this site and I'd like to list all of the parts I have at home (probably a thousand or two). The problem is, there is a ...
5
votes
1answer
220 views

Why 2M Cross Axle has Groove?

I was sorting axles noticed only 2M has grooves. Why 2M Cross Axle has grooves? Is it for alignment?
4
votes
2answers
517 views

Common, practical use for this piece

I've been digging to some old inventories and noticed that all Bohrok from the Bionicle theme contains this piece: I'm pretty sure I have this piece in my collection, probably from a Bohrok. At ...
4
votes
1answer
318 views

How many standard 2x4 LEGO elements are produced in a single 2x4 mold injection?

Just how many standard 2x4 LEGO elements are produced from a single mold injection? I realize the molds are used over and over again, but how many bricks does a 2x4 element mold produce at a time?
5
votes
1answer
369 views

What is the purpose of the hole in the 12 x 12 boat bow (6051)?

I recently received Renegade Runner (6268), and I noticed that it has a somewhat awkward hole in the bow: The main bow piece has a hole for some reason, but I'm not sure what it is for. Here's the ...
5
votes
1answer
271 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 ...
11
votes
3answers
429 views

Any reasons for the introduction of the new-style raised arch?

The new-style raised arch (to the left, 92950) got introduced in 2009, and has been gradually replacing the old-style arch (to the right, 3455) across the board. However, after four years, not only ...
8
votes
2answers
2k views

Why does Lego restrict the number of colors per shape?

There are many shapes and many colors of Lego elements. Some color/shapes are rare and hard to find. Why does Lego restrict the number of colors available per shape?
8
votes
1answer
962 views

Why was the 1x1 round brick changed?

The first 1x1 round bricks had no lip, just like most bricks: Brick, Round 1 x 1 Old - No Bottom Lip A lip was then added: Brick, Round 1 x 1 Solid Stud Why? Later, a hole was added in the ...
9
votes
1answer
284 views

Can I take an old LEGO winch apart?

I have an old LEGO winch that looks like #73037 It has been "restrung" but it is very stiff and it looks like it has some of the old string stuck between the rotating and non-rotating parts. It ...
6
votes
1answer
310 views

Electric, Plug Holder 4.5V/12V what is it for?

I have seen the Electric, Plug Holder 4.5V/12V on bricklink a few times and have often wondered what it is for. According to Bricklink, it was only ever produced in Light Gray and appeared in 3 ...
10
votes
1answer
2k views

What are the angles used in angle connectors and liftarms?

LEGO makes Technic Angle Connectors, like these: (Here are names and part numbers). They also make angular liftarms, like these: (part 32348). That last part has an angle of 53.5 degrees. ...
5
votes
1answer
278 views

Is there a list of colours currently in production?

Is there a list anywhere of colours currently being used by Lego for new sets? There seem to be lots of comprehensive lists of all colours released ever, but few that relate to in-use colours, for ...
18
votes
1answer
661 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 ...
12
votes
1answer
369 views

Why do the tubes in the Seattle Space Needle Architecture set need to be cut?

I just received the Seattle Space Needle from the Architecture series. There are tubes that the builder is required to cut to a certain length for the model. This is the first time I've encountered ...
4
votes
2answers
286 views

Are there more studs or “antistuds”?

I was reflecting this morning about the recently introduced element Brick 1 x 1 with Stud on One Side and the fact that there is no real counterpart for it; that is, a 1x1 brick with a hollow cavity ...
10
votes
2answers
9k 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 ...
7
votes
2answers
3k views

How to sort complete sets from box of unsorted LEGO

My son has thousands of pieces of LEGO, but he has them all dumped in a box. Is there any way to figure out what sets they went to if I don't remember the names of them?
7
votes
1answer
2k 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) ...
10
votes
1answer
687 views

Which BIONICLE set did this mask came from?

I just unearthed a rather wealthy stash of semi-rare Great Kanohi masks. Never knew I collected them! Anyway, among them was this clear transparent Kaukau (Great Mask of Water Breathing): You may ...
15
votes
1answer
2k 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 ...
7
votes
1answer
302 views

How do they decide when to remove an element from production, and what happens to the molds when they are retired?

We all know certain LEGO elements are no longer being produced. How do they decide when to remove an element from production, and what happens to the molds when they are retired?
5
votes
1answer
193 views

Measurements (LDU) of Lego tracks Set 151

I have an old set of 7851 curved tracks. I want to use the outer tracks (the ones with the bumpy surface). If I was to put one end down on a baseboard so that is tangent/parallel with the grid of ...
16
votes
2answers
1k 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 ...
22
votes
7answers
3k views

Why did Technic bricks have holes in the studs?

Lego Technic (/ Expert Builder) bricks have always had a very different design than the normal Lego brick, with peg holes lining the sides serving fairly obvious purposes, but they also have had (as ...
12
votes
5answers
2k 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 ...
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)? ...
7
votes
1answer
450 views

Are the older (hollow underneath) brick elements considered “collectable”?

I know. I know. All LEGO elements are collectable. I mean are the older, tubeless bricks valued above and beyond the fact that they are still viable pieces to build with?
14
votes
2answers
5k views

Is it possible to change the battery in a 54604 light brick?

I got 4 of these in in a bulk lot of Lego, but the lamp is getting quite dim in a couple of them. Is it possible to change the battery in a 54604 light brick? It looks like the brick should open, ...
11
votes
3answers
522 views

Does the basic 2 x 4 brick have a common nickname?

Some bricks, such as the Erling brick, seem to have common nicknames in the LEGO building community. As the basic 2 x 4 brick appears to be the foundation of the system, it is reasonable to suppose ...
10
votes
1answer
882 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 ...
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 ...
13
votes
1answer
2k views

Is there difference between different colors of LEGO axles?

There are a few different colors of LEGO Technic axles, but not enough to really use for artistic variation - black, grey, some beige, and recently I have started seeing blue. The particular color ...
18
votes
1answer
4k 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 ...