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15
votes
4answers
4k views

How should I go about selling a large number of unsorted LEGO sets?

Here is my problem. Over the years my son had me buy a large number of Star Wars sets (including 10179, 10188, 6211, 7676, 7675) and he built them. Then he traded (or lost) most of the mini-figs ...
15
votes
2answers
4k views

What is this Lego piece - Yellow with handles and an octagonal section?

It clearly says Lego on it, but I have no idea what it is. The only number inside is 4-01.
15
votes
4answers
446 views

How can I fix a flattened gear?

I have an old small gear that somehow got flattened to an oval shape. The axle hole is too narrow to slide a bar through, although it is not completely closed shut. How can I repair this gear?
15
votes
3answers
13k views

Is there any application to keep an inventory of owned sets and pieces?

I'm looking for a desktop application that keeps track of sets and pieces owned. Ideally something that would look up LEGO databases such as Peeron or others in order to add the pieces in a set ...
15
votes
7answers
4k views

How to unplug black friction pin connectors

Black friction pin without slots connectors are common in older Technic sets. Note that these were quickly replaced by the current version with slots that is much easier to remove. vs Especially ...
15
votes
2answers
2k views

Will playing with a PF train motor by hand damage it?

If one pushes a PF-motorized train by hand, will it cause damage to the motor, or any of the other parts (IR Receiver, Battery box)? It is essentially working as a generator when turned by hand, so ...
15
votes
2answers
8k views

Can I use RCX sensors and motors with the NXT brick?

I have a bunch of motors and sensors from the original Mindstorms set. It seems a shame I can't use these with the more recent NXT set. Are there any unofficial modifications that allow you to convert ...
15
votes
2answers
2k views

Where do I find thousands of blue & yellow bricks for an art project?

I'm an artist and I've started a project where I need around 4000 blue and yellow bricks, specifically bricks and plates that are 2x or 1x any length, but the longer the better. Any suggestions on ...
15
votes
2answers
2k views

Are Samsonite gears compatible with modern Technic gears?

Do the old Samsonite gears (above) work with current Technic gears (below) LEGO bricks tend to be backward compatible with older bricks, but since I don't own any Samsonite gears I cannot tell. ...
15
votes
2answers
863 views

Why do official Lego sets sometimes use 1 large part when several would work just as well?

One of the things that makes Lego so great is the ability to rebuild sets into something new and different. However, I know that sometimes TLG uses large pieces to lower costs and/or build complexity. ...
15
votes
1answer
2k views

A piece with no place in Heartlake Stables

I recently bought this set for my niece for her birthday, when we were finished setting it up we noticed a larger orange piece that we couldn't find a place for but was in the set and in the back of ...
15
votes
1answer
769 views

What does SNIR stand for?

I know that SNOT means "Studs Not On Top", but I've also seen "SNIR" used, often in the same context as SNOT, but clearly different - what does it mean?
15
votes
3answers
684 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"...
15
votes
1answer
1k views

What are all the different accessories that I can get for an NXT?

Pretty simple...What are all the different accessories that I can get for an NXT? I know this could turn into a list, but this will be a helpful list, I think.
15
votes
1answer
2k views

How can I make a precise one-way clutch using Technic elements?

I need a mechanism so that if a (NXT) motor rotates forward, it moves one gear, but the other stays still, but if it rotates backwards, the first gear does not move, but the second one does. I found ...
15
votes
1answer
651 views

Why did Lego use the same number for two different sets?

For example, Ricky Racoon on his Scooter from 1979 is a completely different set from House with Garage from 1996, but they share the same number (324). Why did Lego recycle numbers like this? Do they ...
15
votes
1answer
1k views

Under what conditions are the LEGO boardgame dice unfair, and by how much?

For LEGO's board game line, they have moulded a LEGO die, with a 2x2 stud pattern on each side. Obviously, weight distribution is going to be thrown off if you use a full studless plate on one side ...
15
votes
2answers
6k views

Bridge from just basic bricks?

I teach an after-school engineering class using LEGO bricks, one of our classes has the students build a bridge. Each student gets a custom set of about 150 2x4 bricks, about 300 2x2 bricks, and, if ...
15
votes
3answers
13k views

Removing glue from Lego bricks

When I was five my Dad used some kind of a good glue to put together a set together so I didn't loose any pieces. Putting the ethics of that action aside, I want to split the bricks from another and ...
15
votes
3answers
1k views

Which Duplo bricks have practical uses in System building?

Traditional 2x4 and 2x2 Duplo bricks can be used to bulk out models and provide a structural support for landscapes, but have there been any other uses for Duplo bricks of all shapes and sizes in ...
15
votes
3answers
1k views

Is there a way to remotely operate the push-button light brick?

The push-button light brick seems to be popular with Lego at the moment, and included in quite a few sets. I'd like to find a way of being able to operate it remotely, so that I can include the ...
14
votes
6answers
6k views

What is piece 4211642 from 10179 - UCE Millenium Falcon?

I'm working on making sure I have all necessary pieces for 10179: Ultimate Collector's Edition Millenium Falcon (a painstaking process, to say the least). I received the set not entirely complete, ...
14
votes
5answers
8k views

LEGO Safety: Known risks and how to avoid them?

I run an after school program that teaches engineering to kids, mainly Kindergarten through 3rd grade (roughly ages 5 - 9). I'm trying to educate my coaches as to the known safety risks regarding ...
14
votes
5answers
1k views

Does Lego market sets that were designed by fans?

My {son, daughter} read on a LEGO box that the set was designed by a LEGO fan. That is amazing! Is this common and how does my {son, daughter} get into that? What sets were designed by fans so far?
14
votes
5answers
19k views

How can I identify Lego sets from a box of parts?

I am a life long LEGO Maniac, and my kits from when I was a kid were passed down to my nephew, who has just passed them down to my son (40 years of history...). The trouble is that none of my old ...
14
votes
5answers
4k views

What techniques can be used for laying plates at 45° angle?

I've seen a number of techniques for laying individual elements at 45° angles, but I need a consistent method for laying down larger plates at 45 degrees while maintaining close contact with the base ...
14
votes
3answers
1k views

What are the essential resources for learning the fundamentals of LEGO building?

After years of buying and building LEGO sets, my six-year-old son is tearing through the first level of the Master Builder Academy. He's fascinated by micro-building, and generally seems liberated ...
14
votes
4answers
9k views

Is it legal to sell your mocs?

First off, I assume that it's legal to sell used LEGO bricks and it's also legal to sell self-made LEGO instructions and parts-lists. As far as I know, there are people selling LEGO sets of their ...
14
votes
1answer
746 views

Is this element some kind of Technic connector?

I am thoroughly confused about an element I have come across: I have never seen a piece quite like this. It's unlike any Technic connector I've seen, so I doubt if that is what it's for. The two ...
14
votes
5answers
3k 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 ...
14
votes
4answers
53k views

What is the quality of lego replicas on Aliexpress?

Aliexpress sells a lot of Lego replicas, has anyone here bought one? I am wanting to know how the quality compares to Lego? Example products: https://www.aliexpress.com/wholesale?catId=0&...
14
votes
4answers
31k views

What advanced railroad features are possible with the Lego PF train sets?

I recently got my first train set, the Constitution Chase, and it has sparked my imagination for building train layouts. My 3-year-old son has a small collection of wooden trains and we enjoy building ...
14
votes
3answers
4k views

Is there a Technique or Algorithm for Building Spheres?

There are times when I would like to build a sphere or a dome like this one: From Small Lego Sphere Project While this example is great, I find it difficult to scale it to another size, whether ...
14
votes
5answers
1k views

Where can I find examples of everyday objects built in Lego?

Suppose for example I am interested in creative ways people have made trees, or minifig scale furniture, or just architectural details like windows. Is there some encyclopedia that organizes pictures ...
14
votes
4answers
7k views

How to build a steerable remote-controlled vehicle with just 1 motor?

In WeDo 2.0 set there is only 1 motor, which can be remotely switched on and off by using the iPad app (by writing a Scratch program). Also motor rotating direction can be toggled remotely. As an ...
14
votes
3answers
672 views

Brick-built alternative to “Door 2 x 5 x 5 Swivel, Bracket Base”

I am trying to make a brick-built alternative to the swivelling door piece that's frequently used to provide secret entrances in castle sets. Example: this combination (images from Bricklink) The ...
14
votes
2answers
2k views

Is it possible to obtain a replacement part for a collectible minifigure?

My son's latest collectible minifigure purchase was missing its legs. Is it possible to get a replacement set of legs?
14
votes
1answer
1k views

What are these Technic “Zapfen” (“stoppers”) called in English?

What are these pieces called in English? Google translator doesn't help in this case...
14
votes
5answers
26k views

How to use Power Functions with Mindstorms EV3?

Having learned that Mindstorms EV3 doesn't work directly with Power Functions, Q: Can you use Power Functions motors with the EV3 programmable brick? A: No, the connector does not match. I ...
14
votes
4answers
2k views

Is “public transport” train compatable with Lego City track?

Among other things, set 8404 contains a train but it doesn't come with any track pieces (see set 7499). Is this train compatible with these Lego City tracks? I see where it's more of an electric ...
14
votes
2answers
3k views

Where can I get 'classic' Lego heads from?

The new heads with expressions are all well and good, but I for one prefer the expressionless 'classic' faces. Are they available anywhere?
14
votes
3answers
318 views

Any way to make this setup “tighter”?

I'm trying to build a robotic arm, and I had the following built so that there was the minimum possible movement created by the gear wheel (that connects to the worm). However, there is still play, ...
14
votes
3answers
3k views

Are there any great LEGO designers that are well-known?

I know that many designers work for LEGO but I was wondering if there was some 'Star Designers' that we should know by name. Of course, I would also like to know what they are famous for.
14
votes
3answers
5k views

Can I remotly control the points on PF train tracks?

I'm interested in investing in power functions based trains, but want to automate switching points. Is this possible? What is the cheapest / easiest way of achieving this?
14
votes
1answer
2k views

Can you identify this bevelled grey 2x1 piece?

I found this incredible MOC of the Ghost In The Shell robot and found a piece I have never seen before. Is it a LEGO piece and, if so, can you help me identify it? Link to the image source: https://...
14
votes
2answers
7k views

Export Lego Mindstorms Code

I was wondering if it was possible in any way to see the actual code that is generated by the Lego Mindstorms IDE. I know there isn't a direct 'export to code' option within the tool but I wondered ...
14
votes
2answers
8k views

What is the difference between Shuttle Adventurer (10213) and Shuttle Expedition (10231)

Beside the age 16+ designation for the Shuttle Adventurer vs the 14+ age designation on the Shuttle Expedition and some different photography they look identical except they don't sell the Shuttle ...
14
votes
1answer
1k 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 ...
14
votes
2answers
2k views

Can you identify these 20 year old LEGO sets?

We have boxes of LEGO which our children used to play with but now the grandchildren want to build things. Can anyone recognize which sets we might have so we can look up the instructions?
14
votes
3answers
392 views

How can I keep LEGO winches from becoming tangled?

I have some LEGO winches/strings with hooks. Putting these away inevitably results in tangled strings (the next time I take them out). Even winding them up doesn't help. Storing these in drawers and/...

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