Questions tagged [moc]

In the LEGO community MOC stands for 'My Own Creation'. Use this tag for questions regarding issues with constructing various features beyond simple structures.

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32 votes
2 answers
35k views

What does the acronym MOC stand for?

This is a common acronym used in the Lego community - what does MOC mean?
mlambie's user avatar
  • 481
25 votes
1 answer
4k views

Is it possible to build a working 100% LEGO glider with the Technic Catamaran sails?

In the past I've tried to make working LEGO gliders but since all the LEGO sails were either too small or the wrong shape the only thing that ever kinda worked was using paper over Technic beams (in ...
Alexander O'Mara's user avatar
18 votes
4 answers
19k views

Is it legal to sell your mocs?

First off, I assume that it's legal to sell used LEGO bricks and it's also legal to sell self-made LEGO instructions and parts-lists. As far as I know, there are people selling LEGO sets of their ...
LarissaGodzilla's user avatar
18 votes
4 answers
26k views

Is there a standard scale for building "minifig scale" creations?

I've seen many impressive models built to "minifig scale" (e.g. the enormous USS Harry S. Truman aircraft carrier), but is there a standard (or at least widely adopted) scale e.g. 1:60 that these ...
Matt Grum's user avatar
  • 783
18 votes
3 answers
12k views

Looking for a site with custom instructions

I'm looking for a website that has some cool custom model instructions. I have a LEGO store near me and I'm able to buy pieces individually. I'm looking for more of a sci-fi ship kind of instructions.
Jason's user avatar
  • 181
17 votes
2 answers
3k views

Simplest/cheapest way to build a tensegrity model?

My daughter saw some beautiful and interesting tensegrity (tensional integrity) LEGO models on the Internet: and she would like to get one for her birthday. We've got a few Harry Potter LEGO sets at ...
Eric Duminil's user avatar
16 votes
1 answer
2k views

Can you identify this bevelled grey 2x1 piece?

I found this incredible MOC of the Ghost In The Shell robot and found a piece I have never seen before. Is it a LEGO piece and, if so, can you help me identify it? Link to the image source: https://...
pcantin's user avatar
  • 13.5k
15 votes
3 answers
9k views

What's the best way to link two (or more) LEGO Power Functions (PF) train motors together?

Last Christmas I built an extended Emerald Night train to run around the tree. To get it to work I had to add a second Power Functions motor. I tuned both IR receivers to the same frequency and slowly ...
craigmoliver's user avatar
  • 1,759
13 votes
3 answers
695 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/...
LEGOSam's user avatar
  • 113
12 votes
1 answer
2k views

Motorized speedboat from Technic Catamaran alternate model?

The alternate model for the 42105 Technic Catamaran set looks a lot like a remote-controlled speedboat. This set doesn't actually come with any motors, or even propellers, so obviously this model isn'...
Alexander O'Mara's user avatar
11 votes
8 answers
10k views

What will happen if I submerge LEGO in water?

I'm thinking of using real water in my LEGO City and putting the Atlantis and deep sea exploration sets at the bottom of the tub of water, but I don't know what will happen to LEGO when put in water. ...
DatLegoguy7's user avatar
11 votes
3 answers
3k views

How do you construct odd-angles on buildings

I was thinking of building a model of the famous Castillo de San Marco located in Saint Augustine, Florida. A small bit of research shows that Legoland has a replica (flickr link) and that there are ...
Sam's user avatar
  • 597
11 votes
1 answer
1k views

What is a "MOD" and how does it differ from a "MOC"?

In this imgur post, one of the images is captioned "MODs and MOCs - Ocean Beach, Kingsman Tailor shop, Sanctum Santorum." If a "MOC" is a "My Own Creation," what is (the most commonly used definition ...
Quuxplusone's user avatar
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 ...
Naveen's user avatar
  • 203
9 votes
1 answer
1k views

Help in identifying elements used on LEGO Batman movie's Daleks

I've been working on making a replica of the Dalek from LEGO Batman. I've worked my way through this video tutorial and the author identifies some differences between their (awesome) effort and the ...
MadProgrammer's user avatar
9 votes
3 answers
1k views

MOCs: A question about using LEGO trademark

I recently made a MOC using LEGO bricks that I would like to sell. I know that, since this is my own construction I have the rights to do that, but my question is about the LEGO trademark. I want to ...
Valentino's user avatar
9 votes
2 answers
1k 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 ...
Duy Vuong Quang's user avatar
8 votes
3 answers
797 views

How tall is the Saturn V set in LEGO units (studs, bricks etc.)?

I'm building a MOC to scale with the Saturn V set and am having trouble figuring out how tall the 1st stage engines are but the entire thing would be really helpful! Thanks!
th4t gi's user avatar
  • 83
8 votes
1 answer
147 views

Are there any wheels or rings that fit in pin 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 ring ...
user1876058's user avatar
7 votes
3 answers
1k views

What is the official term used for building MOC models?

I know that MOC means "my own creation" as noted here. What I would like to know is do you call the actual act of creating a MOC, "MOC building", or is there another official term? I wanted to build ...
Lynnea Taylor's user avatar
7 votes
1 answer
583 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
  • 355
7 votes
1 answer
2k views

New ways of connecting levels of multi-story modular buildings

Compare these two instructions from the Green Grocers and Pet Shop modular building and you may notice (other than the background colour) that the top of the walls of the buildings are both arranged ...
Ambo100's user avatar
  • 17.6k
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
6 votes
2 answers
13k views

Tips for getting enough bricks to make a MOC with unified style

In the past, I made MOC's out of my LEGO Star Wars sets. At this point in my life, I don't really want to take those apart for pieces and I'd much rather have them on display. Recently, I have been ...
Jedi_Maseter_Sam's user avatar
6 votes
2 answers
268 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 ...
HodorKing's user avatar
6 votes
1 answer
366 views

How deep can the axle go in the Powered Up L motor?

I am trying to make a MOC but I can't decide how long the axle could be so it can go fully into the motor but not extending out of the other side. Could you tell me how long the axle can go in?
user39178's user avatar
  • 217
6 votes
1 answer
1k views

Simple way to build large circular plates?

I was wondering if there is a simple way to create a large circle or circular plates. I want to build a MOC of the Hero Factory assembly tower (In LDD first) but most of the pieces that form circles ...
Medicinal Man's user avatar
5 votes
2 answers
870 views

The Coffee Chain

I have been looking all over the internet, since I first came upon the Larry the Barrista minifigure(got into mini figs kind of late), for the coffee chain logo. I love the takehome cup that comes ...
Chris's user avatar
  • 51
5 votes
1 answer
537 views

Is this black and red speedboat model from an official set or a MOC?

Please help me: is this from an official set or an MOC?
fabian's user avatar
  • 1,285
5 votes
2 answers
925 views

Going from LDraw/LeoCAD to Physical Set

Once I've designed a MOC using either LDraw or LeoCAD where can I go to get the bricks I need to then build that set in the real world? I've been poking around forums for an hour now trying to get ...
Andrew Johnstone's user avatar
5 votes
1 answer
1k views

Resources for building MOCs with pieces entirely from single sets

On most websites I've found, people post MOCs that use a random (or seemingly unlimited) supply of pieces. However, I'm interested in building MOCs using only pieces entirely from one set. (For ...
jamaicanworm's user avatar
5 votes
2 answers
476 views

What's the circle piece in this MOC?

I saw a moc from here. But have no idea what the piece it use on the arms of the robot, and on the guns.
Recca Chao's user avatar
5 votes
1 answer
203 views

How can I emulate this wheel from the mowing unit of a ride-on mower?

I am trying to build a model of a specific ride-on mower with Lego and I cannot find a satisfying solution for the wheels supporting the mowing unit. This is what they look like on the original: ...
Wrzlprmft's user avatar
  • 2,174
5 votes
2 answers
275 views

Are there any existing (or upcoming) aftermarket PoweredUp hubs?

I bought the Mindstorms v4 / advanced hub (in set 51515). It's a good set, and the Hub has some great features - notably a rechargeable battery, the ability to run "live" off of USB power, ...
some bits flipped's user avatar
5 votes
1 answer
431 views

Can 9V train motors be linked and work together via the top power stud connection?

I'm building a MOC based on the 10219 Maersk Train, but going for the classic track power 9V system given the removal of need for batteries and slowly increasing availability of new 9V parts from ...
Jazzyamx's user avatar
  • 153
5 votes
1 answer
691 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
5 votes
0 answers
740 views

MouldKing set 13132 - Original design, alternate build or cloned MOC?

It seems that Chinese clone brand Mould King will be producing a new set that looks a bit like LEGO's Disney Castle set (71040). It has two times as many parts, however, and unlike LEGO's Disney ...
John Slegers's user avatar
  • 1,105
4 votes
3 answers
1k views

Best Places to show MOC online?

Well, I finally finished one of my projects. Is there a friendly place online where I can post a few pictures of it for people to see?
Monte Gardner's user avatar
4 votes
1 answer
448 views

Examples of LEGO Rubber Bands Used For Friction Enclosure?

I'm working on a variant design for a MOC that includes a cover over an open area. The new design is based on a suggestion for a "cookie jar" style design made in another of my questions, LEGO ...
G_Hosa_Phat's user avatar
4 votes
1 answer
582 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 ...
user39178's user avatar
  • 217
4 votes
2 answers
340 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 ...
user3091's user avatar
4 votes
1 answer
103 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
4 votes
1 answer
154 views

The route a power line takes through a neighborhood

I have a small Lego town built. I want to add power lines. However, I don't know how to route the power lines through the neighborhood. Should I create one line that snakes between all the houses? ...
posfan12's user avatar
  • 263
4 votes
0 answers
322 views

Europe based printing services for low quantity high quality custom printed tiles

I've found many websites providing a service for custom printing of LEGO tiles : United Bricks Brick Engraver BrickSanity Fab-Bricks Citizen Brick EclipseGrafX Minifig Madness BrickTactical ... I ...
John Slegers's user avatar
  • 1,105
4 votes
1 answer
451 views

How to power up MOC-0308, based on Technic 8297 Off-Roader?

I have built the following MOC, with details here and here. It is pretty complete, although I would have tried some servo motor for steering. But after I've finished it, I've got into trouble: ...
mike's user avatar
  • 503
3 votes
2 answers
298 views

How do I robustly tilt a strength-1 wall?

Background I am still working on my model of a ride-on mower, which has a seat that looks like this: As you can see, the seat is mounted onto an inclined surface, which I realised to my satisfaction ...
Wrzlprmft's user avatar
  • 2,174
3 votes
2 answers
752 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
3 votes
1 answer
529 views

Linear Actuator Clicking

I have just finished working on a mock-up landing gear deployment mechanism, keeping it as simple as possible of course. However one thing that I cannot seem to get rid of, is the small linear ...
42043's user avatar
  • 31
3 votes
5 answers
2k views

How can I make Custom Instructions for my MOC?

I'm a huge AFOL and recently have quit my job in order to take my part time job of selling Lego to the next level. However, there's a new venture I'm having difficulty with and I would greatly ...
DanTheLegoMan's user avatar
2 votes
3 answers
6k views

draw program for LEGO MOC models?

I want to design a MOC digitally. I can do this with ldraw, but are there any drawing programs better than ldraw to make models of LEGO ? kind regards, Peter
pwghost's user avatar
  • 31