7
votes
2answers
2k 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 ...
7
votes
1answer
742 views

Is there a way to convert a 3D model into a lego sculpture?

After researching this question for a few days, I want to post it here so I can share what I learned in an answer, and hopefully learn some new techniques too. If anyone has found another way to do ...
7
votes
2answers
247 views

What is the brown ship in the Star Wars 2012 advent calendar?

The brown boxy ship is shown in the ad, but I have no idea what it is? My son was waiting all day for me to get home and tell him, but I can't figure it out!
7
votes
2answers
2k views

Good LEGO CAD Design Software with Technic elements and animation

I'm taking computer engineering in Gr. 11 right now and our final project is to create a robot with the first version of Mindstorms. My partner and I are making a sumo robot for the class competition. ...
7
votes
1answer
308 views

Can I repair a broken LEGO brick with glue?

I have a dump truck hinge piece that snapped in half when it got bent backwards too hard. Is there a type of glue that would be appropriate to repair the piece? Would superglue be a good choice? ...
7
votes
1answer
1k views

How does the Super Awesome Micro Project work?

I've recently read an article about a car which is made entirely of LEGO and it runs on air. I'm curious about how it works. Can someone explain the details of it? Here is the car: These are all ...
7
votes
2answers
1k views

What is known of the capacities of the MINDSTORMS EV3 when it comes to interconnection with a network (WiFi, bluetooth)

What is known of the new MINDSTORMS EV3 capabilities when it comes to netwoked functions. What type of interface can be plugged to interact with a PC or portable device (smartphone/tablet)? In term ...
7
votes
1answer
288 views

Mechanical auto-unblocking mechanism

I have a GBC module1 which is quite simple but blocks regularly because a ball happens to be at just the wrong place at the wrong moment. Per se, it's not a problem as a Technic Gear 24 Tooth Clutch ...
7
votes
2answers
549 views

Lego-compatible suction cups?

I'm looking for suction cups that are compatible with the Lego pneumatic system. I've seen people who have built things with them (on youtube videos, etc), but haven't found anything on eBay or ...
7
votes
4answers
2k views

How to make Mindstorms respond differently, depending on which sensor is triggered?

I am new to Mindstorms (but in my day job I am a programmer). I want to make my robot do one thing if the touch sensor on port 1 is pressed, and do something different if the touch sensor on port 2 ...
7
votes
2answers
3k views

How do I make my own LEGO stickers?

I'd like to make my own stickers like the ones produced for LEGO sets using a design I've made in Photoshop. What do I need to make stickers for LEGO, what kind of printer do I need? Will the ...
7
votes
1answer
180 views

How well does the new interior lighting system intergrate into a new build?

I enjoyed the interior LEGO lighting I saw at Brickcon 2011. How does the lighting system affect the fit of the LEGO elements involved?
7
votes
1answer
120 views

Why do some sets contain parts of an unrelated colour?

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 ...
7
votes
1answer
253 views

What is the maximum distance between fixed train wheels?

I'm working on a train, and I'm curious what the maximum distance is between fixed wheel sets in order to properly navigate all of the different types of track (straight, curved, switch, flex, etc). ...
7
votes
2answers
1k views

Homemade methods for interfacing a Servo with LEGO bricks

I'm looking for non-destructive way to structurally attach a standard servo with LEGO bricks. I'm interested in answers for either Large, Medium or Small size servos. I'm using LEGO ...
7
votes
1answer
646 views

Is it unethical to distribute 3D models of Lego bricks?

So say that I use LeoCAD to export some brick models to Blender. Would it be unethical to modify the models in various ways (tris to quads tool, subsurfacing, textures, rigging, etc.) and then ...
7
votes
3answers
2k views

What was wrong with monorails?

From this answer: Then there's the whole problem of parts which are simply not in production any longer, and for which the cost of reproducing them would offset the potential benefits of reissuing ...
7
votes
3answers
513 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 ...
7
votes
1answer
2k views

Are nanoblocks compatible with other building bricks?

Recently I have found Nanoblocks, a Japanese brick toy, in American stores. How compatible are these with other building toys? They look to be approximately the same scale as Modulex.
7
votes
1answer
291 views

LEGO and fuel company commercial relationship?

Over the years LEGO has used a number of real-world fuel company names on its products: ESSO Shell Exxon. I'd be interested to understand the commercial relationship between LEGO and these ...
7
votes
1answer
983 views

How can I catalog my LEGO pieces?

I have a fairly large LEGO collection, but not large enough that I can build anything and everything, given instructions. It's already organized quite well, but how can I catalog the pieces I have so ...
7
votes
1answer
251 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 ...
7
votes
1answer
242 views

NXC Saturation algorithm for limiting motors?

What is a good algorithm in NXC for control saturation? I want to make sure my motors don't turn past a certain angle, or they will break the model. I could do something like: if (angle > 45) ...
7
votes
2answers
391 views

Why does this program work in LabView when targeted to computer but not to NXT?

I have a program written in Labview for my LEGO Mindstorms NXT 2.0. When the target is set to the computer, the program works just fine. However, when I set the target to the NXT, the program doesn't ...
7
votes
3answers
197 views

How can I preserve opened Lego packages?

For some reason I keep my old Lego boxes (since the 1980s), and my son's old Lego packages. Because they are quite large, they take up a lot of space in my house, even if they are put one into ...
7
votes
1answer
426 views

How to simulate Lego Mindstorms programs written in C#?

I am going to do some programming for Lego Mindstorms in C# using http://www.mindsqualls.net/ and have a question. Is there any good simulator to see result of my program without uploading the code ...
7
votes
1answer
358 views

Lego with hollow posts underneath - dates?

When did TLG change the small posts on the underside of the modern bricks and plates , eg 1x6 and 1x4, to hollow ones?
7
votes
1answer
913 views

How do the train wheels turn so smoothly?

After assembling a train or its companion wagons, I'm always impressed at how smoothly the wheels glide over the track. When putting them together, it's just a metal axle with two wheels on each end ...
6
votes
2answers
379 views

What is this yellow hinge piece named?

Recently, I've been flipping through a scan of the March 1995 edition of the LEGO Mania Magazine. Something in the corner of page 11 caught my eye: This is the 5th step of the "Flip & Build" ...
6
votes
2answers
665 views

Damage Boiling LEGO Bricks

I bought some LEGO bricks from shop on Bricklink and received them yesterday. In order to make sure that the pieces were nice and clean (they were used) so that my two year old can play with them, I ...
6
votes
3answers
647 views

Why are there no faces drawn on the black heads?

There were two black heads in the Star Wars 2011 advent calendar and neither had a face drawn. Is that because there was no face necessary since it was going to be covered with a mask anyway or is ...
6
votes
2answers
311 views

What part(s) can I use to connect technic liftarms at a 90 degree angle?

Is there a way to connect the two beams in this angle and still keep the connection strong and keep the rotation the same?
6
votes
2answers
1k views

How does the cost of a LEGO railroad compare to a traditional scale railroad layout?

How do the costs compare between a railroad layout constructed with LEGO trains and a nearly identical layout using traditional scale models, such as HO?
6
votes
2answers
225 views

How well do LEGO assemblies hold water?

Water is commonly represented with blue pieces, but what if I tried adding real water to a setup? For example, I create a simple blue base with a rectangle making a sort of pool. If I fill that ...
6
votes
2answers
785 views

How to Make a Lego Claw Arm?

I am trying to build a lego claw arm to pick up stuff that is out of my reach and I need some ideas on how to design it. I would like a mechanism to be able to open and close the claw from the ...
6
votes
3answers
874 views

Simplest approach for rail sets automation

How would you tackle the automation of a lego rails set. I am looking for a solution that can be achieved with available parts. From the answer I will chose either to invest into lego rail sets for ...
6
votes
2answers
579 views

Does Toy 'R Us (or more expensive-than-average) retailers have more extra parts than average?

I haven't bought LEGO sets for a while, as my kids are just getting old enough to make the sets, but I am assembling the LOTR sets which I find impossible to resist. I bought Gandalf Arrives (9469) ...
6
votes
1answer
345 views

Whose Head is this?

I've found this kind of cool looking minifigure: Apologizes for the poor picture. :( But after some research, I think I have determined that this body would have come from set 6584 - Extreme team ...
6
votes
1answer
336 views

What is the true angle of a cheese slope?

What is the true angle of a cheese slope? Bricklink lists it as "Slope 30 1 x 1 x 2/3" while LDraw and Peeron list it as "Slope Brick 31 1 x 1 x 2/3". Why do these sources disagree, and what is the ...
6
votes
5answers
362 views

Which brands (fictional and non-fictional) have appeared in the Town/City theme?

A few years ago I wrote an article about the fictional organisation logos found in the City theme. I'd quite like to revisit this, as I'm sure I must have missed some. I also only focused on the ...
6
votes
2answers
934 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?
6
votes
4answers
585 views

Are these trees LEGO parts?

I've come across some trees from some bulk purchases I've made, and I can not determine if these are LEGO or "compatible" parts. Any ideas? The tree on the left is an official tree but the one in the ...
6
votes
4answers
3k views

How can I convert an image's pixels to actual LEGO colors?

The LEGO Group released a few "mosaic" sets a while back, which came with clear baseplates and a bunch of 1x1 bricks. I have been wondering recently if it is possible to use an image as a reference ...
6
votes
2answers
325 views

What set is this brown (wall?) element from?

While sorting out some old Lego finds, I stumbled across this piece: I have absolutely no idea what this element could be for other than some kind of wall part, and even then I have never seen ...
6
votes
1answer
249 views

How many styles of element separators has LEGO produced?

I used to use other LEGO elements to separate tightly bound pieces in my collection. My thumb nail and I were quite pleased when I first discovered an actual brick separator LEGO introduced to ease ...
6
votes
3answers
5k views

What are some examples of advanced train layouts possible with the 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 ...
6
votes
3answers
454 views

Are there SNOT models with instructions for beginners?

I would like to introduce SNOT building to my daughter. I have used this method only a few times myself and when I did, I was just messing around. I feel it would be simpler and less frustrating for ...
6
votes
2answers
4k 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 ...
6
votes
2answers
2k views

Are there any African American LEGO minifigures besides the ones from the “Sports” basketball series?

I was wondering if there were any African American LEGO minifigures besides the ones from the sports basketball series... I got a brown head from a LEGO Stormtrooper set instead of a black one. I then ...
6
votes
1answer
506 views

What changes were made to Maersk blue?

I read that Lego recently changes the color of Maersk blue. Is this true? If so, why the change?

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