Questions tagged [ldraw]

Questions about the freeware LDraw 3D design program.

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What are the differences between Studio 2 and LDcad when working with Technic and EV3?

Information regarding different software has come up over the years, but I am looking for something current. My goal is to create instruction books for some of my designs. Previously I used LDD, which ...
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5 votes
2 answers
249 views

Export an object from Blender to LDraw

I have modeled a custom part in Blender and I would like to get it into LDraw format for use in LDCad and LPub3D. I don't know much about 3D formats, but Blender can export collada, alembic, fbx, gltf ...
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  • 181
5 votes
0 answers
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Connectivity graph for a digital model

I'm looking for a way to take a digital representation of a model (e.g. an LDD or LDraw file) and extract from it a representation of the model that describes which pieces are actually connected to ...
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5 votes
2 answers
500 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 ...
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2 votes
1 answer
86 views

Submodel does not show properly in LPub3D

I am new to digital LEGO models and building instructions with LPub3D. In order to find my way around submodels I have created this very simple dummy ldraw model: 0 FILE new model.ldr 0 Name: new ...
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2 votes
1 answer
629 views

How to include submodel into main model in LeoCAD?

In LeoCAD I can create multiple submodels. But how do I merge them or integrate one into the other? The release notes suggest that this is possible, but I can't seem to find out or find resources ...
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1 vote
1 answer
424 views

Where to place your own ldraw pars

I just started designing LEGO instructions. I used LeoCAD to built the model and Web Lic to create the instructions. Being a Linux developer, Windows is hard to use and access. It seems bricks ...
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  • 175
1 vote
1 answer
251 views

Importing 3ds file in ldraw (LeoCAD)

I designed a model in LDraw/LeoCAD and exported it as .3ds file. I thought that I can import .3ds file to edit it later. Now I want to edit the model but I don't see any option to import the .3ds file ...
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3 votes
4 answers
978 views

Is there a current source for the LGEO parts library?

I'm working on a povray render of a model. I've seen the LGEO (not a typo) part library referenced in various places, but I haven't been able to find a working download link. Is there a current ...
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  • 34k
1 vote
0 answers
51 views

Help regarding importing into LDraw

I just have a quick question regarding importing an .obj file into LDraw. I originally put a an .obj file through Brickr and exported as an .obj. Now, I want to import into LDraw in order to visualize ...
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2 votes
3 answers
3k views

Determine assembly steps from LXF file

I’d like to build a MOC of a Technic vehicle that was posted online using the provided LXF file of the completed model. I was able to open the LXF file with both Bricksmith and Stud.io, but, as far ...
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2 answers
830 views

How to import Rebrickable.com parts lists to LDraw?

I have exported all of the parts that I have entered into Rebrickable as a .pbg file. I also have a .xml file from Rebrickable that is for BrickLink. I was told that I could just import the document ...
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3 votes
1 answer
1k views

How do I make instructions from my .ldr/.lxf files on OSX?

I'm on OSX and I've got a bunch of models made in Lego Digital Designer. They look awesome! Now I want to make instructions. Q: how do I get from my .ldr files to images or PDF? I'll take ...
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3 votes
1 answer
4k views

How do I convert an .lxf file to an LDraw file for bricksmith on Mac?

How do I open an .lxf file in LDraw's Bricksmith on a Mac?
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  • 31
2 votes
1 answer
648 views

How to import an unofficial parts archive into LDraw?

I recently created a basic EV3 robot in Lego Digital Designer and exported it as a LDraw file. When I opened the LDView file, the EV3 elements were missing. I then proceeded to download an unofficial ...
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4 votes
2 answers
543 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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3 votes
1 answer
1k views

Where can I find LDraw examples? [duplicate]

Where can I find LDraw files to download? I would like to have a collection of simple Lego examples and want to create step-by-step instructions for my youngsters.
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10 votes
1 answer
2k views

Why is my LDD model incomplete after I export it to LDraw?

I have an LDD model that I exported to an LDraw file. When I opened it in LDView, only part of it was displayed. It looks like some parts were not exported properly. Is it normal? Why does it happen?
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  • 101
5 votes
1 answer
240 views

Do LDraw files describe models, bricks, or both?

Sorry if this is kind of a dumb question, but do LDraw files describe models (with translation and rotation values with references to bricks contained in other files), or do they describe the bricks ...
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  • 884
25 votes
1 answer
5k views

What are LDUs and how do they relate to LEGO bricks?

What are LDUs? I see technical people talking about plans and designs in terms of LDUs. I understand it's a measurement unit. What does it mean and how do LEGO bricks relate to them? Why are they ...
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20 votes
5 answers
3k views

How to make a 1 ldu offset?

LDraw units are defined so that a simple 1x1 brick has a side of 20 ldu and a height of 24 ldu. Using simple building techniques, it's easy to create 2 ldu offset, as illustrated in this picture, ...
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8 votes
1 answer
716 views

Are there LDraw files for the standard Heroica components?

I'm using MLCAD to design and polish some Heroica maps. As I go I've made various LDraw files for the common map components (6x6 tiles with 4 spaces, 4x1 hallways, etc.) as well as some aliases for ...
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