Questions tagged [building]

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

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Way to build LEGO spaceship with regular bricks [closed]

How do I build a spaceship without buying a spaceship set? With a limited amount of bricks, like, say 300 2x4, 100 2x2, and about 20 2x1 bricks. I'm looking for instructions.
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  • 111
3 votes
1 answer
295 views

How to fix a broken LEGO Star Wars Corellian Defender set

I was playing with my Corellian Defender which took me up to 4 days to build. It broke unfortunately and I am very sad since I love it very much. I need some tips to rebuild it back.
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  • 39
11 votes
1 answer
886 views

Lego Escher structures

How are these done? Is it trick photography? With some kind of giveaway background it should be obvious, but I notice they are not us telling that.
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  • 273
12 votes
4 answers
13k views

Are BanBao bricks compatible with Lego?

Does anyone has experience with BanBao bricks? BanBao World Are they compatible with Lego bricks? They have basic sets and plates which are at a good price.
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7 votes
1 answer
226 views

What is the best system for lifting things without pistons?

I am building a big walker thing. It has a mining laser at the bottom that can be lifted on one half, and the other is attached to the vehicle. However, I can't seem to find a way, because the hooks ...
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  • 119
6 votes
3 answers
1k views

Is there a way to set a flat plane at an angle to horizontal of less than 22.5 degrees, but more than 0?

I am building an airplane with a wing dihedral (the wings angle upwards from the fuselage), but I am using parts 44302 and 44301 interlocked as designed: Unfortunately, one click up is about 22.5 ...
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  • 161
15 votes
5 answers
707 views

What's the most effective way to align 1x1 tiles?

There are a number of sets (e.g., the Farnsworth House and the Parisian Restaurant) that use a field of 1x1 tiles to represent a tiled floor. I have found aligning these pieces such that they are all ...
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  • 2,858
2 votes
1 answer
898 views

Can I download ldraw instructions from Lego Digital Designer?

Can I download ldraw instructions from Lego Digital Designer? Is there a collection of simple examples for my youngsters. I was thinking of: houses, small animals, simple airplane, simple car, tree, ....
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4 votes
2 answers
549 views

Where can I find LDraw files to download for basic figures?

I would like to have a collection of simple examples for my youngsters. Only for basic LEGO bricks. Not Technics or complex and complete space stations, just some step-by-step instructions for the ...
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1 vote
1 answer
273 views

Some LEGO elements not attaching as usual

I am building a tank made of purely normal LEGO elements, which means no gears or axles or that type of stuff. I am trying to attach a 6x6 LEGO plate onto the base for support, but it is not working....
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3 votes
1 answer
101 views

Variable stick lengths and angles at nodes of building bricks

Is it possible to build 3D toys connecting several LEGO Bricks sticks/rods to make polyhedrons? Lengths and angles between sticks should be variable.
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7 votes
1 answer
1k views

Building a 45 degree brace

I'm trying to reproduce my own house in Lego, and attached is a photo of the porch above my front door that is supported by a 45 degree wooden brace: At my current scale, the vertical white wood with ...
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  • 225
9 votes
2 answers
1k views

How is this brick attached to the pregnant minifig?

While Google-image-searching pregnant minifigs (don't ask) I came across this fig, and other variations on it, but I can't figure out how the 2x2 round brick is attached.
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4 votes
2 answers
408 views

Question about a Lego Compatible brand with "B L" logo

My son has a small orange and grey space ship building set. It has two astronauts with it. The logo on the bricks shows the letters "B L" on them. We're trying to find instructions online so that he ...
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8 votes
4 answers
3k views

Representing pregnancy on LEGO minifigs without a dome

So far for pregnancy I have tried a fetal carrier that I put on the minifig's back but this limits her movements. Specifically she can't bend too far in either direction and also she can't lay down ...
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  • 181
4 votes
2 answers
857 views

Creating ski gondolas/tramway with Duplos

I've got a three year old who just came home from a ski vacation where he was enamored with the gondolas (like below). I want to make one with Duplos for him. I'm most of the way there, but have a ...
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  • 183
2 votes
1 answer
195 views

70728/2 Ninjago piece too short?

My son is putting together the 70728 set and the grey tall pieces in book two at step 8 seem to be too short, they leave a gap. By about a mm. Has anyone else had this experience?
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  • 21
8 votes
6 answers
39k views

Lego remote controlled cargo train not working

I've helped my son put together the Cargo Train set (60052) but now we can't get the remote control to work. It all looks like it's been assembled correctly with new batteries put in, but it doesn't ...
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  • 81
11 votes
4 answers
806 views

City scale connection for five-bladed helicopter rotors

I want to build a Super-Puma helicopter in city minifigure scale and form, I have the basic design planned, but I am not familiar with any five-sided technic connectors, which I will need for the ...
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  • 2,018
3 votes
1 answer
302 views

How to connect chain links to the axle

In my project I want append two 21 chain links to the axle 12. Is this any axle connector with knob ending?
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  • 33
7 votes
1 answer
539 views

Is it possible to create your own wheel?

After my other question, i pretty much have a bicycle design all planned. My problem now is with wheels. None of my LEGO wheels are big enough to work on a bike. And, the biggest ones are all pretty ...
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5 votes
2 answers
3k views

How many ways can six 8-peg lego blocks of six different colors be combined?

I have seen the number quoted as > 650 billion. The quote is from a Danish mathematician, Soren Ehlers. Intuitively, this does not seem correct to me. Any mathematicians/statisticians out there who ...
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  • 51
6 votes
2 answers
817 views

Gearing down a PF XL

I'm looking for the best way to gear down a Power Function XL. I need to achieve a very slow output RPM (less than 1-2 RPM). I've tried a 625:1 gear (trough 40:8 gear). Can someone link to a well ...
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  • 61
8 votes
2 answers
964 views

Any way to create a gear+chain, like for a bike?

I would like to create a LEGO bike. I can imagine how most of it would work, but i'm stuck at the chain. I need a way for the turning pedals (at one spot) to cause the wheel (in the back) to spin ...
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15 votes
3 answers
928 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 ...
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3 votes
2 answers
175 views

Resources to learn useful common Mindstorms mechanical construction patterns

I'm currently working on building a small scale CNC-like (X-Z, no Y axis) machine to cut glass mosaic tiles. I decided to give it a go using my EV3 set and I'm having some trouble with the Z-axis ...
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  • 131
5 votes
2 answers
219 views

Lego Motor for cycling a tool

I am curios to know if I can utilise the Lego Power range to rotate a transducer to a set point and return to its original position and if so is it able to cycle the movements repetitively? Ideally I ...
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9 votes
1 answer
263 views

Preparations for outside display

I am thinking of using LEGO to make some outside yard art, (large minifig scale castle) and wondered what I should do to prepare them for being outside in variable weather conditions (in the Seattle ...
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  • 1,871
14 votes
4 answers
639 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, ...
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13 votes
2 answers
2k views

What elements do I need to create a smooth multi cheese slope ramp?

I love cheese slopes, but I am having issues when I try to produce a smooth gradient using several in succession. I end up with a gentle saw tooth effect at each junction. What combination of elements ...
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4 votes
2 answers
4k views

What is the best way to make a staircase?

I have built a Bat Cave from some bookcases and lego base plates. ( http://alice-yarns.co.uk/blog/2013/11/17/the-batcave-part-i/ ) I want to add staircases for the characters to move between each of ...
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7 votes
1 answer
450 views

How can the "Bar Holder with Clip" part be used?

I'm wondering whether the "bar holder" end of this element (http://www.bricklink.com/catalogItem.asp?P=11090) can be used as a stud. In other words, would it have enough clutch power to hold e.g. a ...
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  • 263
2 votes
1 answer
166 views

Link 1 x 6 with Stoppers Part 2739b

Will Link 1 X 6 connect to Liftarm 2 Axle Holes and Pin / Crank (Part 33299)? The Link will be attached to a coke can, that needs to drive a crankshaft. 2739b from Peeron 33299 from Peeron
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16 votes
1 answer
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 ...
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  • 263
7 votes
2 answers
3k views

Help identifying Lego Set from bags!

I visited Toyrus in Paris recently and bought several lego sets for my son. Mostly, Star Wars sets. In each case, we brought the manuals and the cardboard boxes so that he could assemble them. ...
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5 votes
1 answer
224 views

Need help fudging a group in 8039

So, I'm building "8039 Venator-class Republic Attack Cruiser ™ Star Wars TM" and I've hit a snag. I need help fudging the instruction from page 76 of book 1 for that set (see picture below). I'm ...
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  • 587
24 votes
7 answers
11k 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 ...
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  • 703
1 vote
1 answer
507 views

Cell phone holder [closed]

Is there build instructions for an interesting cell phone holder that can be placed on a table? The holder needs to hold the phone upright and allow it to be charged at the same time.
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3 votes
2 answers
12k views

Where can I find LEGO Digital Designer projects for Lego Technic MOCs?

I have LEGO Technic pieces collected from multiple sets and would like to find projects on the web which I can view and build models step by step. Please advise sources where I can find these.
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10 votes
2 answers
19k views

How can I build a Lego rubik's cube?

How can I build a LEGO Rubik's cube, I have 2 of them, and I've built them several times, but how can I build a LEGO Rubik's cube.
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6 votes
4 answers
12k views

How to put LEGO together upside down

I'm building a truck. For the transmission, I want to make it all even and symmetrical. To do that I need the pieces to stay together but they have no studs connecting so they will just fall apart. ...
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  • 61
10 votes
1 answer
2k views

Alternative for Technic, Gear Rack 1 x 7 with Axle and Pin Holes?

We are trying to build a MOC which requires Technic, Gear Rack 1 x 7 with Axle and Pin Holes and we don't have that. Could we build it? Or are there any alternatives? FYI we do have Technic Gear ...
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  • 203
4 votes
1 answer
757 views

Extra pieces in my set - Eiffel Tower

I recently purchased a Eiffel Tower Architecture kit and I found it having 9 extra pieces. I know it is normal to have extras but I think the amount is a bit high. Any ideas or explanations? Does ...
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5 votes
2 answers
287 views

What is the purpose of the Technic Axle 6 in set 6847?

In set 6847 (Space Dozer, http://www.peeron.com/inv/sets/6847-1) there is a black Technic Axle 6 that has no structural or cosmetic function in the set. I don't have the original instructions or box, ...
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  • 999
5 votes
1 answer
2k views

Has Lego Box 5508 been discontinued?

The Lego Deluxe Box 5508 seems to be out of stock everywhere in the UK. I was hoping to get this set for my kids for Christmas, but it is nowhere to be found. Has it been discontinued? Or do they ...
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7 votes
8 answers
44k views

LEGO ideas (with traditional bricks)

I would like to find a large catalog of LEGO designs/ideas that can be built with "traditional" LEGO bricks (both normal and DUPLO). I have found many nice designs in the web, but most of them ...
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  • 173
3 votes
1 answer
454 views

What pieces do I need to make suit swappers from the Lego Batman video game?

My son has asked Santa to bring him Lego Batman suit swappers to use with his minifigures, both Batman and Robin versions. Can anyone advise as to what pieces are needed for these? All help is very ...
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  • 31
3 votes
2 answers
2k views

Suspension bridge building techniques

I am working on a suspension bridge with my sons and have encountered two problems. Our technique: 8x6 plates for the roadway 1x8 bricks (with side-holes) underneath each side of the roadway to ...
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  • 587
4 votes
2 answers
336 views

Lego MOC joining query

I have a building query. As you see the picture (attached). I really don't know how the creator can attach the "3829c01" steering wheel to the "4070". I try so many rod like parts can't get through ...
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3 votes
1 answer
268 views

Using motors to ring a bell?

I would like to create a motor set up so I can use it to ring a bell inside a small tower. Since I haven't used any of the current LEGO motors was wondering what the group would suggest. which motor ...
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