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Questions tagged [building]

Interested in building techniques? Then this is the tag for you.

2
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1answer
52 views

Building advice for “hunched” mech design?

Another mech based question, let me clean up as best I can... So, in LDD, I'm working on an Evangelion Unit from the popular manga and anime, Neon Genesis Evangelion, and have decided to build EVA ...
4
votes
0answers
36 views

I'd like to build a mechanism to press buttons on a remote control. What is a good basic approach to use?

I have a small remote control like device with about 11 buttons. The centers of each button are placed about 1.1cm apart, and each are about 0.7cm in diameter (this means about 0.4cm between the edges)...
0
votes
1answer
83 views

My Lego Technic 42082 wheel stuck and can't move [closed]

After I finished my 1st manual book, I found out that my crane wheel can't move. May I know which part that I did incorrectly?
5
votes
2answers
110 views

How can I assemble 2 opposing gears so that the axle rotations are perfectly parallel?

Due to the way all the modern LEGO gears are perfectly quarter-turn symmetrical, there doesn't appear to be any way to assembly 2 opposing gears such that I get a 2 perfectly parallel axles. This ...
1
vote
0answers
50 views

What can I do with all my brick separators? [duplicate]

Since LEGO has started adding a brick separator to each of their larger sets, I have more brick separators than I know what to do with. Due to inflation, they also aren't really worth anything to try ...
4
votes
2answers
89 views

What are some good purist rotacaster / omni wheel designs?

In robotics, rotacasters or omni wheels are often very useful. It's possible to buy LEGO-compatible ones from some third parties, here's one random example: Unfortunately, LEGO has yet to make any ...
5
votes
1answer
161 views

Building technique for plate at near 45 degree angle

Trying to construct an octagon shaped hallway and trying to attach plates at a near 45 degree angle, but have no idea how to do this. Are there any techniques for attaching plates at a near 45 degree ...
4
votes
1answer
94 views

LEGO color discrepancies and tint variations

While building my copy of set 21310 - Old Fishing Store, I noticed that there are several shades of Sand Green amongst the many tiles of this set. The picture below shows just the 1x4 tiles included ...
6
votes
1answer
104 views

How to place minifigure legs into normal LDD bricks, like a 1x2 brick?

Let me clear up the confusion surrounding this question to the best of my abilities I'm currently in the final steps of finishing of a mech project I started some time back, finishing now at the ...
9
votes
2answers
392 views

Identifying Parts Used For The Escape Hatch of Sariel's Tiger XL Model

I am working on a similar model of Sariel's Tiger XL in prep for my own designs of a few other German WW2 tanks, and need some help identifying a part or two. Does anyone know what are the two parts ...
5
votes
1answer
201 views

Pattern for oscillation with LEGO Technic

I would like to simulate an oscillation movement of 120/100 degrees around a fixed point. Something like this one: Basically, I want to rotate a gear around its axis, but only have a partial ...
7
votes
1answer
106 views

Stuck on 42066 Air Race Jet model B

I've successfully built model A of the Air Race Jet but with model B I've got stuck on page 7, instruction 8. How do you do that?
10
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1answer
207 views

Why do some LEGO City vehicles have tiles in their chassis?

While building 60150 Pizza Van, I noticed that the first few steps of building the eponymous vehicle have you place lime green 1x2 tiles in specific positions and black 1x2 plates in others: These ...
7
votes
1answer
127 views

How can I firmly attach a triangle to a turntable?

I found a couple good technic triangle designs over on brickengineer.com. For example: How can I firmly attach a triangle to a large turntable? Details: Really I only need to attach ...
2
votes
1answer
116 views

Extra pieces in 76112 Batmobile

I've been building the new app-controlled Batmobile. As far as I can tell, step 34 shows many more elements in the parts list than are actually used in the build. What is going on here?
2
votes
1answer
74 views

How do I connect part 62113 together to form a ladder?

I am looking to build a ladder. I saw part 62113 and was wondering if its possible to connect part 62113? Here's what that part looks like:
2
votes
2answers
160 views

How do you support upper floors in tall buildings?

When I build a skyscraper out of LEGO and the floor above is weak do I remove the flooring from above and a pillar underneath and then put the floor back or something?
6
votes
3answers
188 views

How can you pin the Penguin Suit Guy down?

I like penguins and so I was really amazed to find the Penguin Suit Guy in Collectible Minifigures Series 16: But despite coming with the 88646 tile he won't stick to it because of the skates: There'...
1
vote
1answer
114 views

How to visually search for specific parts in a 3D model?

For an missed/loose piece that needs to be reattached, I plan to check all the steps where the piece was used. If I can also get an overview of the possible piece locations from the existing 3D models,...
5
votes
1answer
365 views

Fan door does not close completely - Air Race Jet

After completing the Air Race Jet, I found that the upper fan door does not close completely (stopping short by about 1/2 inches) when I switch from VTOL to Flight mode. The attachment points to the ...
1
vote
1answer
106 views

Problem assembling wings as shown for LEGO Air Race Jet (Technic 42066)

On Page 158 (Step #231) of the assembly instructions for the Air Race Jet, two red rivet bricks are shown being inserted into a wing. But the pieces in question will simply fall through the holes in ...
3
votes
1answer
110 views

How to ship a LEGO sculpture to a contest?

I am planning to participate in an art contest that allows paintings, sculptures, or video clips. I have a LEGO sculpture in mind that would fit the idea of the contest, but it would have to be ...
8
votes
1answer
444 views

How many 2x4 Lego bricks would it take to build a real skyscraper?

As an exercise designed to communicate the scale of plastic waste in the oceans, which was estimated at 268,940 tons in 2014, I'm trying to describe how many life-size buildings one could construct ...
7
votes
3answers
304 views

Problem with “warping” of LEGO water

I am new to Bricks.StackExchange, but not to StackExchange, nor to LEGO bricks. I have run into a problem and was hoping for some ideas. I was trying to imitate the cool water technique of Legopard ...
4
votes
1answer
153 views

Is there any reason behind fancy bricks in invisible places?

In set 60080 there is a blue bick with pretty fancy shape. There are also hardly visible bricks in other places. Is there any reason? Why are these bricks used? Any official or semi-official ...
3
votes
1answer
71 views

Principles of D.I.Y. Minecraft microworlds

Lego released 4 Minecraft microworlds which more or less fit together with each other in some meaningful way. Just to impress my boys I've been making my own worlds on 6x6 plates or wing pieces. I'...
7
votes
1answer
72 views

Are there any wheels or rings that fit in clips?

I  was experimenting with Lego part 16091 Vehicle Steering Wheel Small and various clips, mainly the ones that fit onto bars. To my frustration I found that the clips do not engage at all with the ...
10
votes
2answers
234 views

How are these transparent stairs made?

What techniques and bricks are used to support the transparent pieces? Can anyone work it out?
6
votes
1answer
160 views

Connecting “out of system” roads?

I've been trying to figure out how to connect SNOT road models that are at varying angles to one another. You can see my efforts in this thread. Are there any interesting methods of connecting roads ...
5
votes
2answers
241 views

What's the fastest way to rebuild different sets that have been brought together

My mom did something to my LEGO. When I was a kid I loved playing with them. Frankly I have no interest in it anymore. She broke down all them sets, and put them all in a huge box. I still can ...
4
votes
2answers
151 views

Building a more-efficient water propeller?

I enjoy making Power Functions-controlled boats to race (in water) in various LEGO convention competitions (which require 100% genuine LEGO pieces). Usually, these boats end up being paddle boats, ...
10
votes
2answers
406 views

How can I build a brick-built monorail track?

LEGO haven’t released a new monorail set since the 90s, and the track parts that were made are very expensive and hard to find. I am interested in building a brick-built alternative. I am ...
10
votes
1answer
362 views

What is the largest jump in LEGO instructions?

What is the largest gap in LEGO instructions in terms of build time needed to complete a step? For example, Skyline (5526) includes this step: That is quite a leap between steps 14 and 15. I'm ...
2
votes
2answers
125 views

Lego identification help!

What does this build? Can anyone help me with the instructions link?
2
votes
1answer
178 views

Which LEGO set is best suited to build robots?

My goal is to build some educational robot kits for kids and so I'd like to know if there are any LEGO sets that let you build almost anything or can you only can build the specific model that the ...
7
votes
2answers
307 views

Does a 1x3 Lego technic liftarm with two round holes and one axle socket exist? (for tank suspension usage)

I have been searching for some time for parts like these (with no success): But with two holes (instead of three) and one socket for Lego axles at one side. Likewise two holes (instead of one) and ...
1
vote
1answer
219 views

How can I fix this gap in the Ghostbusters Firehouse roof?

We built the LEGO 75827 Ghostbusters Firehouse which was good fun. But despite being pretty sure we have all of the pieces where they are supposed to go, there is a gap in the roof: Yet it goes into ...
4
votes
2answers
600 views

How to best transfer power at 90 degrees for high torque applications

So, I am building a tank model and this is the transmission I have been working on: Description: There are two gear pairs for gearing up (16t to 8t gears) and one gear pair for gearing down (worm ...
8
votes
1answer
1k views

42042 Crawler Crane: conversion to remote control

After many years of "Lego drought", I have decided to reinvest in some. Amongst a lot I have purchased is a Crawler Crane, half built, with all the parts to complete the build. However, instead of ...
9
votes
0answers
223 views

Step 160 on carousel 10257

I'm struggling with step 160 where I use white "hinge" connectors to connect the carousel platform sections. It seems to create too much pressure and the platform breaks apart. Grateful for any tips.
3
votes
1answer
151 views

Build-A-Bricks Building Set

When I was a boy - 1940's-50's - I had a plastic building set called, Build-A-Bricks, or some such. It was for modeling brick houses. The pieces were similar to LEGO but larger and there were ...
5
votes
1answer
290 views

Sharks with frickin’ laser beams attached to their heads

The Lego Movie does not only feature sharks and lasers but also laser sharks: However, a Lego shark only has one place where other pieces can be attached and that’s located on its belly. Hence, I am ...
3
votes
1answer
146 views

Clutch gear test

I have two white 24t clutch gears, one marked as 2.5-5Ncm and another unmarked - how can I assembled them in a way to test which one "gives" first ) i.e. has torque before it slips - I was thinking to ...
3
votes
1answer
142 views

Why the use of different colors for the inner bricks? [duplicate]

I'm currently building the set 10221 and it's not the first time I notice that the colour of bricks used for the inner parts (parts that aren't visible) of the set are different from the main colour ...
6
votes
2answers
516 views

How big to make a perfect cube? And how to build it

I want to make a model, that involves many cubes. I want to make many individual cubes, then connect them together. I don't want my cubes to be that big. That leads to my first question: What is the ...
51
votes
5answers
11k views

How do I center a 2x2 plate on a 3x3 plate?

I want to be able to center a 2x2 plate in the middle of a 3x3 plate - specifically to put minifig on. Another option would be to center a 2x1 plate on a 3x1 plate.
6
votes
2answers
385 views

How can I make a spiral staircase with basic blocks at right angles?

Quite simply, how do I make a spiral like a staircase, but with only these blocks? There is also a 8x2 block, but my brother has it. Because it is quite an old set, I need a spiral staircase without ...
8
votes
4answers
859 views

How can I make my robot heavier?

I'm building a 3kg LEGO EV3 sumo robot and I need to make it as small as possible. Which LEGO items do you recommend to add more weight on it? (tires, plates, wheels, blocks, minifigs etc.)
8
votes
1answer
293 views

Technic 8858 alternate model impossible to build?

I don't mean "difficult", I mean it appears to have an actually impossible instruction. Or am I missing something obvious? Here's the deal (pardon my lack of standard names for parts): I recently ...
6
votes
1answer
365 views

Brick-built sails for a pirate ship

I am building a Sea-Cow(70810)-like ship that of course needs sails. The sails should be larger than the Technic fairings used in the LEGO movie set, but I want to avoid cloth sails and strings. My ...