Questions tagged [building]

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

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How can i connect an external speaker to a Lego NXT?

How i could connect an external speaker to an NXT like the one in this video?
sam's user avatar
  • 1
2 votes
1 answer
151 views

Is it possible to angle the wheels on Speed Champions?

I have got quite a few Speed Champions sets and I like building MOCs to photograph them in. However, I feel like the photos would look more dynamic if I could angle the front wheels, to look like some ...
LC1983's user avatar
  • 153
5 votes
1 answer
2k views

Why doesn't this Technic bar fit?

Why doesn't this yellow Technic bar fit?
Technic Axlerod's user avatar
4 votes
1 answer
113 views

Getting started creating LEGO kinetic sculptures

I’m brand new here and fairly new to LEGO. I’m an adult artist who wants to make LEGO-based kinetic sculptures. Can anyone point me in the right direction? My experience is very limited — as a child ...
ShyPlatypus 's user avatar
3 votes
0 answers
155 views

Building technique for modelling Thomas the Tank Engine faces

I'm building Thomas the Tank Engine trains, and I'm looking for techniques to build realistic faces. I'd like the trains be able to run on standard LEGO rails, so I'm targeting 8-wide engines. This ...
jncraton's user avatar
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0 votes
1 answer
176 views

Has anyone had problems fitting the stalactites and stalagmites in the 76252 Lego Batcave?

I have got to stage 403 and, whilst I have had problems fitting the pieces together previously, at this stage I simply cannot get the stalactites or stalagmites to fit into the studs - they seem to ...
Mike P's user avatar
  • 523
17 votes
3 answers
2k views

Technique for connecting a tile vertically next to a brick

I'm trying to create this effect, where a 1x1 half-circle tile seems to 'stick out of' a 2x2 brick at 90 degrees: This is easily achieved with a 1x1 tile with light attachment, as seen here from the ...
jqno's user avatar
  • 271
8 votes
1 answer
177 views

How is this setup created?

From https://www.newelementary.com/2018/10/lego-35787-tile-modified-2x2-triangular-45-cut.html midpage there is this setup: Can anyone provide more details how the parts are connected? Preferably so ...
Michael Verschaeve's user avatar
3 votes
2 answers
183 views

Salt Lake Temple: window bordering

I'm trying to replicate the stonework above the arched windows on the main side of the Salt lake temple. my current approach is to use a combination of 1x2 SNOT brick to face outward 1x2 jumper plate ...
Monte Gardner's user avatar
6 votes
1 answer
586 views

How can I add 1x4 tile stairs to my octagonal gazebo model?

How can I add 1x4 tile steps to the bottom of the front opening in the gazebo model below? The base of the gazebo is a 10x10 octagonal plate (part 89523). I have tried using wedge and round plates ...
Flux's user avatar
  • 345
3 votes
2 answers
775 views

How can I build a Lego slope of a rough 50 degree angle with preferably legal building techniques?

I am currently building a functional Lego minifigure-scaled escalator that can transition from flat platforms to stairwell. My first iteration for its guiding rail includes a slope of ~39.5 degree ...
Duy Vuong Quang's user avatar
4 votes
1 answer
232 views

Change Mario Yoshi pose

I'm returning to Lego as an adult and struggling with what I thought would be a small project. Please tell me if this is off topic but as it has a hard answer of no or this is how I though it would be ...
Skeith's user avatar
  • 193
10 votes
1 answer
1k views

How does the play experience work in the City Missions sets?

I recently saw one of the LEGO City Missions sets: According to the box, these sets are "built with stories, not instructions". How does this work in practice?
jncraton's user avatar
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5 votes
1 answer
218 views

Is there a way to keep fragile models together?

My late husband built a number of Lego models that I would love to keep together. However having a 5 and 2 year old around this is proving difficult and parts keep getting knocked off. Is there any ...
Barbara's user avatar
  • 51
-1 votes
4 answers
228 views

Are there any flat plates with beveled or sharp edges?

I'm currently making a functional minifigure-scaled escalator that ideally move like this. Progress has been made on both the stair slope and staircase design (both respectively pictured below), and ...
Duy Vuong Quang's user avatar
3 votes
1 answer
658 views

Lego 21327: How do I attach the typewriter segment to the body?

Typewriter build step 312. Red arrows point to two upraised open connectors. What part of the segment snaps into them? If snapped to the rod outside of the two gray mid-rod spacer pieces (step 309), ...
Ray Montgomery's user avatar
2 votes
1 answer
275 views

Lego 21323 Grand Piano - After setting up app on page 110 of instruction, the gear is turning anti-clockwise instead of clockwise as shown

After completing all builds till page 108 of the instructions, I installed the app. But when I press play on a song the gear move for a quarter turn anti-clockwise but the picture on page 110 shows ...
IndranilC's user avatar
5 votes
1 answer
191 views

Mistake with hook holder (steering arm with round socket) on Technic Helicopter 42145

I made one small (but costly) mistake in my otherwise very satisfying build for the Airbus helicopter: at step 66, I connected the grey piece "steering arm with ball socket" the wrong way. ...
SeismicVibrations's user avatar
3 votes
1 answer
285 views

Salt Lake City Temple: Temple doors

I'm building the lds temple in Salt Lake City in lego. I'd like to represent the temple doors as seen here: My current plan is to use the stockade as the base door: ...and probably put a plate over ...
Monte Gardner's user avatar
8 votes
1 answer
145 views

Best method for building large by assembling modules?

I am about halfway in building a 16 foot high tower made of simple bricks. It is basically a hollow skyscraper 6 inches square, with the walls two studs thick. To steady it, it is built around a steel ...
Kevin Kelly's user avatar
6 votes
2 answers
2k views

Can one connect two technic pins end-to-end?

Who hasn't tried following some MOC instructions only to discover problems? This TIE Outlander build (free instructions) is neat but has several issues, the biggest of which are steps 44-46. The ...
Taejang's user avatar
  • 171
2 votes
1 answer
139 views

In the Ferrari 42143 build at Stage 85 should the yellow assembly be loose?

I have gone beyond step 85 but the yellow assembly installed then is still loose, not connected to anything and can be pulled out. I want to make sure this is right as I do not want to go much further ...
Mike P's user avatar
  • 523
2 votes
1 answer
181 views

Salt Lake Temple: Downward facing triangles

Another question in my SLC temple series: How can I replicate the downward facing triangles in the stonework of some of the spire/columns. Currently I'm planning on just using cheese slopes but those ...
Monte Gardner's user avatar
7 votes
2 answers
696 views

Converting Nanobocks builds to LEGO

Had anyone attempted and had any success in converting a nanoblocks build to use LEGO bricks? On the horizontal plane, the nanoblocks bricks seem to be half the size of LEGO bricks (4mm x 4mm versus ...
Neil Tarrant's user avatar
2 votes
1 answer
217 views

Lego D11 ripper cylinder

I'm building the Lego set 42131 D11 bulldozer and my back ripper cylinders (linear actuators) are in the complete up position and it's keeping me from completing the build. How do you get them to go ...
Daniel Jones's user avatar
4 votes
0 answers
101 views

Question about "Arch 1 x 2 Inverted" [duplicate]

So, I'm creating round windows for my temple build. My current approach uses 2 1x4 arches (the stubby kind) with one of them upside down and some complicated mechanisms for keeping it in place. ...
Monte Gardner's user avatar
14 votes
2 answers
940 views

How to build this flower?

I found this picture of a flower in a book and would like to build it. I'm wondering what's inside the white bloom?
PhilippC's user avatar
  • 143
6 votes
1 answer
367 views

Is a huge box of old unsorted Lego and non-Lego pieces with no instructions or boxes of any value?

I have an old big bin of at least 20,000 Lego and Lego-like pieces. I never kept the boxes or the instructions when I was finished building sets and I have Lego pieces from at least 50 different sets, ...
David Smith's user avatar
4 votes
2 answers
179 views

Salt Lake City Temple : Spires

I'm trying to plan the tops of the spires for a lego replica of the salt lake city LDS temple. Here's a picture: I figure I can use a technic ball joint for the round parts, or a ski pole for the ...
Monte Gardner's user avatar
3 votes
1 answer
1k views

Has anyone else had problems with the tail rotor drive shaft on the Lego Airbus Model 42145?

I am partway through this build and at step 565. I have found the drive mechanism to be very tight and have tried to loosen the drive elements as much as possible. I have found what I think is a ...
Mike P's user avatar
  • 523
4 votes
2 answers
236 views

Salt Lake City Temple : side tower windows

I've been challenged to build the Salt Lake City LDS Temple. I've made some progress on the main wall, but the side towers are a bit difficult. Can I get some tips on how to make the dark slit in ...
Monte Gardner's user avatar
1 vote
1 answer
107 views

Falcon Shield Attachment

If I want to attach the Falcon shield to a wall, what kind of attachment do I need? I suspect I need a horizontal clip but I'm not sure.
Monte Gardner's user avatar
8 votes
0 answers
122 views

How to effectively attach mirrored stickers to an interior curved surface?

I'm working on 10283, Space Shuttle Discovery and I've reached pack 13 step 282 where I'm assembling the cargo bay doors. These doors have reflective stickers that attach to the insides of the curved ...
Catija - too's user avatar
7 votes
2 answers
3k views

Help with Lego Typewriter 21327 - can't get the carriage mechanism working

Two AFOLs here who are stuck on the Lego Typewriter build. We have built large and complex sets before, but this one has us stumped. We have now rebuilt Sections 5-7 twice, but we can't get the ...
Joy's user avatar
  • 71
1 vote
1 answer
5k views

Cat D11 LEGO set won't start the calibration process

As soon as I start the calibration process in the app, the gearbox jams. It doesn’t do anything, just clicks and clicks (stripping the gears). Any ideas what the cause might be?
Haircutterman's user avatar
1 vote
0 answers
89 views

42131 Bulldozer Testing [duplicate]

Got to the testing page and everything is working correctly except the left track is going in the opposite direction to the app animation. Should I start again?
Louisa Frisby's user avatar
5 votes
2 answers
320 views

Plate perpendicular to bottom of square brick/plate: is this connection legal?

This is closely related to the question about jamming plates underneath 2x2 round bricks, (and indeed prompted by a comment there), with differences explained later. It is possible to attach a plate (...
IvanSanchez's user avatar
  • 8,659
11 votes
1 answer
526 views

Plate perpendicular to bottom of 2x2 round: is this connection legal?

I've played enough with 2x2 round plates and 1-stud-wide plates to know that it's possible to attach a plate underneath a 2x2 plate and perpendicular to it, like so: The same connection is possible ...
IvanSanchez's user avatar
  • 8,659
2 votes
0 answers
108 views

I just finished the typewriter set and everything works fine but the type-bar is a little higher than it should be. Is there any way of fixing it [closed]

The typewriter works perfectly fine. The only problem is the typebar being a little higher than it should be.
nando g.'s user avatar
3 votes
1 answer
647 views

Technic pin on a pole: is it an illegal technique?

I have two 2714b pieces that I want to put together to make a longer pole. Is sliding the technic pin of one pole over the end of another pole illegal? (If it is, how else could I make a long and thin ...
Toomany Bees's user avatar
4 votes
1 answer
2k views

I am building the LEGO 42131 D11 dozer and some of the parts are moving in reverse when testing

I am building the D11 dozer and some of the tests like 2 and 4 are moving the parts in the opposite direction that they are supposed to be going. I took apart the entire build and rebuilt it and the ...
Aidan's user avatar
  • 41
1 vote
0 answers
106 views

Power from single XL-Motor to both rear and front axles [closed]

I have a single XL motor and I would like to make my small car a 4WD one. Currently, it is just front-wheel drive. Any good instructions on transmitting power to rear wheels as well?
Ali Ok's user avatar
  • 111
9 votes
1 answer
374 views

5x3 Half Round Problem

How can I hide on top of this with tile pieces? To make it like this: Edit: Thank @jncraton for the solution Before answering I made it like this: But now it looks way better and it will be more ...
UranMaster's user avatar
5 votes
1 answer
566 views

42082 crane boom doesn't engage

At the top of the sleeve part of the boom is a gear and that is supposed to turn against a rack of teeth all along the inner slide part of the boom extension, to make the boom longer or shorter. ...
JDługosz's user avatar
  • 231
4 votes
1 answer
180 views

Lego rough terrain 42082, page 57 book 1 - how does it connect internally

Is the dole meant to connect to another cog inside so all the gears rotate the big round cog on top (Image from brickinstructions.com)
Jason's user avatar
  • 41
5 votes
1 answer
706 views

How do I build my LEGO slope so it connects to the flat top without any notable ridges?

I'm currently building a functional LEGO escalator that is minifigure-scaled and with staircases transitioning from flat platform to stairwell to flat platform. Here's my progress so far: Here's the ...
Duy Vuong Quang's user avatar
18 votes
6 answers
37k views

Estimate building time for a given LEGO set

I'd like to be able to estimate better how much time a LEGO set will take me to build. Are there any resources online that indicate average or fastest building times for a given set? I suppose it also ...
Michael Verschaeve's user avatar
4 votes
1 answer
1k views

Piece in Lego 21327 Typewriter Step 26 can’t be flush as depicted in the illustration

When sliding part #6327028 down the left three rods as depicted in step 26, that piece becomes snug with the gray spacer piece from Step 25, but there’s a gap on the two left rods. The 1x5 black ...
Sickbrick's user avatar
10 votes
0 answers
331 views

How To Ensure Only One Brick is Fed Into a Lego Sorting Machine at a Time?

In this video, they create a machine that can take a bunch of legos put on to a conveyor belt and, using a camera, sort them into a number of categories. I am building a (smaller) version of this, and ...
Brendan R.'s user avatar
11 votes
1 answer
2k views

Cargo bike brick identity

Looking to identify the box pieces here:
Timothy Pulleyn's user avatar

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