Questions tagged [building]
Interested in building techniques? Then this is the tag for you.
320
questions
-3
votes
0
answers
48
views
Lego XOR gate WITHOUT else gates [closed]
Is it possible to try to make an XOR gate with LEGO without using other logic gates?
And if it is possible can you tell me how to build it?
- 1
0
votes
0
answers
52
views
What are these Lego bags [closed]
I tried to upload an image but it will not work the bags have these numbers on them
333 go
243g9
333go
333go
529g1
116g1
333go
230g1
429g
251g8
And I have two more bags that have a number 6&5 no ...
5
votes
1
answer
441
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.
...
- 231
4
votes
1
answer
138
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)
- 41
5
votes
0
answers
271
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 ...
- 167
16
votes
6
answers
3k
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 ...
- 8,948
3
votes
1
answer
234
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 ...
- 31
10
votes
0
answers
190
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 ...
- 101
11
votes
1
answer
2k
views
3
votes
0
answers
118
views
Attaching a laptop to a table
I want to give my minifigs a few laptops. Specifically, 62698 "minifigure utensil, laptop"s:
I've seen laptops in sets and MOCs, but always either (a) closed, being held in a minifig hand ...
- 3,788
-1
votes
3
answers
240
views
Why does this "useless machine" use out of production parts?
I found this new video. It uses out-of-production parts like the transmission parts. So when I tried to buy these elements in new Technic sets, I didn't find some of them. Any suggestions please?
- 194
18
votes
4
answers
2k
views
How can I get my motor to line up with a linear actuator?
I am very new to Lego, and I want to create a simple horizontal sliding door. I'm using a medium linear motor to drive a linear actuator which is attached to the door. The problem is the motor does ...
- 181
5
votes
1
answer
216
views
Saturn V build step 124
Step 124. Having some difficulty from the diagram figuring out how to orient each of these four pieces. Can't figure out if the light grey nozzle is suppose to snap into the bracket shown in step 123. ...
user19400
8
votes
2
answers
521
views
Align 2xX plate on "sandwiched" brick (height of 5 plates)
I'm using "baseplates" for my builds which are built by using two 16x16 plates with one brick height between them (to connect multiple baseplates with Technic bricks and pins).
Now I'd like ...
- 345
19
votes
1
answer
2k
views
How is the roof on this bridge town formed?
I recently came across this build from Markus Rollbühler:
It includes many great details and building techniques. I'm curious how the conical tower roof is formed, though:
It's obviously made using ...
- 34k
5
votes
1
answer
437
views
LEGO Bugatti Issues
This is my first post and my first LEGO set.
I recently built LEGO Bugatti Chiron with all the features working.
I am however having an issue with the rear axle/wheels.
The rear brake calipers fall ...
- 51
2
votes
1
answer
173
views
Box seals: Two arrows instead of 4-digit manufacturing code, is this a fake?
I have bought a lego architecture 21001 "John hancock" from a website.But as the title, there is no 4-digit code on the sticker. Could you guys help check if the stick is not the original ...
- 21
-2
votes
1
answer
194
views
Creating client logos and buildings
My colleague and I are looking to give our smaller customers a custom built company logo out of LEGO, and our 3 largest customers a model of their entire building. Can you give us some pointers on ...
8
votes
2
answers
2k
views
Insert a gear into a turntable?
Is there a way to insert a 24 tooth gear into a turntable of the 48452cx1 type?
-->
Is there any model to feature any tooth gear (even smaller) used inside this turntable?
This specific ...
- 503
6
votes
2
answers
238
views
How can I build the windows depicted in this image?
I am trying to figure out the building technique used in these windows. Does anybody know how to achieve those? Unfortunately I do not have pictures of the lower part.
Edit: I only want it to look ...
- 61
9
votes
2
answers
491
views
How can I build a Lego slope of this exact angle with ideally only legal techniques?
I'm currently building a functional Lego escalator that is minifigure-scaled and with staircases transitioning from flat platform to stairwell. Here's my progress so far:
But with the design of the ...
- 167
2
votes
1
answer
156
views
Where should the 76139 Batmobile roof pins land?
Lego Batmobile 76139.
Could someone please advise whether the pins installed in step 445 should rest on top of or just in front of the stanchions installed in step 417 ?
- 211
4
votes
1
answer
205
views
What is this right angled piece with clip and how can it be used?
What element is this? What can it be used for?
- 34k
14
votes
1
answer
1k
views
How does the LEGO Typewriter mechanism fit?
My wife is building the LEGO Typewriter set (21327). When she installs the gearbox mechanism at step 210, the whole thing jams when pressing the keys.
I am trying to help her and have "unbuilt&...
- 211
5
votes
1
answer
93
views
Question about Batmobile 76139 build
What's the purpose of the hinge plates in Step 133?
I ask because it got in the way when installing the side sections in Steps 222 and 231. I simply pushed it out of the way and everything was OK. ...
- 211
8
votes
3
answers
576
views
Alternative ways of attaching roller coaster wheels
While doing a bit of research about a mine track related question, I noticed that part 24869 "Wheel Roller Coaster" is meant to be used only with part 26021 to form a form a specific ...
- 3,788
8
votes
2
answers
966
views
Minimal mine track
I want to create a mine scene on a 32x32 baseplate. I want to run a train track across the front, and then about 12 studs into the mine. Then, I want to build a couple simple mining carts on the ...
- 4,177
3
votes
1
answer
167
views
Building a window with the tie-fighter round dish
Is there an elegant way to build a round window with the Radial Cockpit Window? I've tried experimenting with vertical clip plates but it just ends up looking odd.
- 4,177
5
votes
2
answers
111
views
What does 18853 (Friends flower) connect to besides 37695 (Plant stem with 3 leaves) or 11609 (Friends accessories star)?
What does 18853 (Friends flower) connect to besides 37695 (Plant stem with 3 leaves) or 11609 (Friends accessories star)?
Is there a good way to attach it to common plant stems (3741) like this one:
- 474
19
votes
1
answer
3k
views
Can the new road plates be used to build ramps or hills?
I have the new LEGO City road plates, and I'm wondering if they can be used to create ramps or hills. Here's the road plate system I'm referring to:
Ramps and hills weren't easy to create with the ...
- 34k
5
votes
1
answer
978
views
Grand piano page 269 of instructions - are the gears suppose to stop after a quarter turn or keep going when reversing directions
The directions show the gears are suppose to move counter clockwise. When I follow the directions on page 268-269, and push the reverse button on the Lego power-up app for the Grand Piano, the gears ...
- 51
2
votes
2
answers
163
views
Automating rotation of a block on a track
How do I rotate a block 180 degrees after an item (like a car or train) passes a certain point in a track?
- 21
19
votes
3
answers
4k
views
Is there a catalog of Lego building techniques?
As a Lego noob watching Lego Masters, I spot certain techniques being used time and again, without any real explanation (Lego Masters is great for entertainment, but offers little to no instruction). ...
- 351
13
votes
3
answers
545
views
In LEGO: How to build a revolving magazine rack for 2x3 tiles?
I've been trying for months to come up with a design or parts for a 4-sided spinning magazine rack, like the old wire-style you would see in book stores. I need it to be fairly stable so I can put in/...
- 113
0
votes
1
answer
735
views
Are there any cases of Illegal Building in an official lego build?
I am defining illegal as it is in this answer, specifically the following
Studs-on-side bricks cannot have their side stud in the hole of a
technic brick
Bricks mounted SNOT style onto Ehrling/...
- 119
12
votes
3
answers
450
views
Train level crossing using 2021 road plates
I'm interested in integrating a train level crossing into a city layout using the new road plates, but I've been struggling to figure out the best way to do this. Here's an example level crossing for ...
- 34k
7
votes
0
answers
195
views
Digital tool for roller coaster physics
I'm currently working on a roller coaster MOC with a looping. I started physically building the MOC but quickly recognised that it is quite a mess to build something, tear it down rebuild it, etc. ...
- 549
4
votes
1
answer
155
views
Question about the lantern pieces in the Winter Toy shop set
I have a question about the lanterns in the Winter Village Toy Shop. I'd like to just buy the parts to make a few of the street-lights in that set. However, from reading the instructions (steps 4 and ...
- 4,177
7
votes
2
answers
646
views
Connecting an axle to a stud on the ground for railings
I'm trying to build railing using axles and connectors and am not finding an easy way to get the axles that go to the ground to connect in a way that would be best for my design. Three options I've ...
- 173
14
votes
1
answer
3k
views
Is this an error in the updated Harry Potter Diagon Alley build/instructions?
In the book 1 directions for the 2020 Diagon Alley set (see pp. 43ff), I've run into the following issue:
In building the back of Ollivander's shop, we seem to be building some type of shelving unit:
...
- 253
5
votes
1
answer
223
views
What all fits into 4532 "Container, Cupboard"?
On Bricklink, the entry for 4532 (a container) lists several parts that fit, but it currently doesn't even list 4536 (a drawer). What else fits into 4532? Better yet, what are some "illegal" ...
- 474
4
votes
1
answer
128
views
Wall Sconce Light
I'm trying to plan a few wall sconces for lighting as in this picture:
One thought I had was to put a transparent 2x2 round halfway into the wall with half of it hanging out and then put 2 quarter ...
- 4,177
8
votes
2
answers
757
views
How can I complete the build of this Lunar lander from the Space and Airport Set (9335)?
We recently got Space and Airport Set by LEGO® Education (9335) for our four-year-old who loves space and really loves his Duplo. He's been enjoying putting together the different parts of the kit but ...
- 181
2
votes
3
answers
259
views
What are the arguments for and against an adult tackling a complex LEGO Technic kit as their first (and possibly only) build?
Suppose I want to get an overall view of LEGO as an adult and can afford to buy an expensive kit.
I have the following abilities
Good eyesight with glasses
Good hand-eye coordination and ...
7
votes
2
answers
510
views
How to integrate hardware/embedded button with LEGO?
I have two different buttons B3F-1000 and 3a250vac switch which i want to integrate into a lego "machine" which i'm powering with an arduino. Since the rest is integrated into lego plates, ...
- 817
11
votes
1
answer
333
views
How to fill a vertical 1.5 stud wide gap?
How can a vertical 1.5 stud wide gap be filled, for example between this brick on a jumper plate and regular plate? I can achieve ratios multiples of 1/3 and 2/5 with sideways plates, but some ...
- 831
10
votes
1
answer
202
views
Creating arrow patterns
What methods are there to creating convincing looking arrow patterns on walls and floors? (Without stickers or printed pieces)
My current solution is to use "relief" building with slope ...
- 831
2
votes
1
answer
121
views
Securing vertical hinge
In this construction, I want the vertical hinge to be in this location, centered in a 3 brick wide area. On top of it is two plates and layer of studs that match the 5:2 ratio, so in theory the hinge ...
- 831
4
votes
1
answer
255
views
What is the power of Lego Powered Up motors (M, L, and XL) and the Move Hub motors?
I am trying to build a setup that includes two propellers that can pitch up and down. I am debating whether I should use two motor to power each propeller and the other two to act as servos for each ...
- 207
9
votes
2
answers
1k
views
Elevator on rails
I'd like to build an elevator for my apartment building. My plan is to use rails and grooves to allow the elevator to slide up and down. This means I have to build the elevator with the studs ...
- 4,177