The 2025-08 LDraw Parts Update has been released. This update adds 964 new files to the core library, including 532 new parts and 57 new primitives.

Thanks are due to all the part authors who created or corrected parts for this release. The small, but dedicated, band of reviewers also play an important role in keeping files moving through the Parts Tracker and deserve just as much credit. This update wouldn't have been possible without their dedication and attention to detail.

This update finally releases the train track switches which have been on the tracker since 2009! It also contains the first batch of Modulex parts.

You can preview the new parts in 2025-08 here, and download the zip-file update or Windows install package here.

Thank you to all the testers and parts authors who continue giving feedback on the PT software. This project would not be what it is without your help.

Orion Pobursky
Magnus Forsberg
Gerald Lasser
LDraw.org Parts Library Admins

I'll be at BrickCon in the Seattle area from 4-7 Sep. If you're attending come find me and we can chat. I'm also giving a presentation on Sep 7 at 3 pm. 

P.S. We can still chat if you come as a member of the public, but please let me know when you'll be there as I usually hang out in the non-public areas during public hours.

Orion

Would it be worthwhile to create a vote/mark in addition to "hold" for the purpose of highlighting imperfections that are not ground for a hold?

A reviewer could use it to mark parts that they have processed and found wanting, to prevent it from appearing on self-made todo-lists. A kind of "hide this part" from me until changes have been made to it.

I see two possible uses of such an in-between vote:

1. "Hide this part - I don't want to review it."
   
2. "Signal the author that the part could be improved, yet leaving other reviewers the possibility to certify the part without any changes."
   

How can I search for my (sub)parts that contain rect-primitives on the tracker?

I would like to have part 5188 please

I've been struggling with getting parts 2677 and 2678 to work together (and with other monorail parts) in Stud.IO for a couple of days now, and after thinking something might be wrong with them, I eventually discovered something wrong with part 2772c01 (Monorail Track Monoswitch (2772c02 / 2774)) instead. After examining this part closely in PartDesigner, I realized that the anti-studs at the bottom are actually misaligned. It turns out that part 2774 is sitting slightly too high above part 2772c02 in that assembly. This means that any monorail that includes the Monoswitch is bound to be misaligned, even if all connections along the monorail are perfect.

I can produce a corrected 2772c01, but it's probably better if someone else does it who has more experience with .dat files and can ensure that the resulting part would be perfectly aligned.

Hello! I'm looking to have Item No: 60899, the Bionicle Av-Matoran Leg Section with Ball Joint and Ball Socket added, currently only the Bionicle Arm Av-Matoran with Ball Joint and Ball Socket exists in Stud.io and I would love to see both added.

If relevant information, it comes in the following colours:
Black
Dark Blue
Dark Bluish Gray
Dark Green
Lime
Orange
White

Thats all! Thank you all for your hardwork!! 

I can not seem to find this part in the studio catalog, and I am struggling to locate it elsewhere:

https://www.brickowl.com/catalog/lego-le...1112-13188

Does anyone have the part file for this?

Hi Team!

Just updated my MLCad v3.51 with a few of the latest parts updates (from Parts Update 2025-02 onwards)

I did it the way i normally do:
download zip file
extract to folder
copy parts, s, textures, p, 48, 8 to their relevant folders
run mklist
scan parts in MLCad

This has always served me well in the past.
However this time, there are lots of vacant spots in the part selection menu on the left.
Worse still, every file i load (ldr or mpd) fails to show some of the builds.

I know they are there, because i can make partslists from the file, but i can't view, or select them.
If i select all, then delete, then UNDO, the image shows. But saving this over the old file changes nothing.

Also, if i start a new file by dragging visible parts into the editing windows then all is good, but as soon as i drag one of the NON-visible parts, and refresh view, all the parts disappear.
Same as above, they are still "there" when making a partslist, but i can no longer view or select anything.

I've found this also seems to happen if i download a complete copy of ALL of the parts.

Is it something i'm doing wrong, or am i doomed to using old parts forever?

Thanks in advance.

I need something narrow between a cylinder and custom quads. The sweep is 5-48.

Is it better to create a 5-48 aring or ering?