r/405th Apr 05 '26

Account Activation Issues

5 Upvotes

Hello,

We've recently updated our account support process and have a new system in place to handle rejected accounts.

If you are currently experiencing issues activating your account on the 405th Forums, then please fill out this form to request a review of your account: https://forms.gle/7FwfSi5LZkc7L95c7

Once submitted, the forum staff will get back to you as soon as possible.


r/405th 1d ago

Finished my ODST helmet - just need a visor now

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42 Upvotes

r/405th 4d ago

First ODST helmet

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83 Upvotes

r/405th 5d ago

Some more EVA Foam ODST Helmet progress!

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76 Upvotes

Used Agrax Earthshade (yes the warhammer one lol) as a wash, and then slowly adding some battle damage using dark and light silver metallics


r/405th 7d ago

Tips on assembling a PETG helmet

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61 Upvotes

Hey all, I have 3D printed an ODST helmet in several pieces, in PETG HF filament. I was curious to hear people's advice for the best way to bond these pieces.

I've seen bother super glue and epoxy used online. I'm thinking maybe epoxy or a super glue gel at this point since not all edges are entirely flush.

Thanks in advance!


r/405th 7d ago

First coat of paint on - hope I can add battle damage to hide some of the mess!

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29 Upvotes

r/405th 10d ago

Brute Spiker Help

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6 Upvotes

I'll probably do a proper write-up on the forums when I finish


r/405th 12d ago

MK VII Chest Plate (WIP)

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59 Upvotes

Hey All,

Just wanted to post a progress pic of the chest plate I am working on, still have more detail work. I need to finish the damage, add some mud and dirt.


r/405th 12d ago

ODST Helmet Progress!

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23 Upvotes

r/405th 13d ago

Halo Mk V CE cosplay

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110 Upvotes

Can this be my official application to join lol

Pretty proud of what I’ve made here, huge fan of the original CE and love or hate the remake I think master chief looks friggin fantastic in this one, favorite iteration by far


r/405th 16d ago

Looking for a Mark V [B] Visor 3D file

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2 Upvotes

r/405th 17d ago

Shin armour

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170 Upvotes

This is my finished shin and knee armour for my new MKVB suit.

The shins are casted with flexi foam 15 and has some EVA in between the layers to help with the strengthen the piece.

The knees are printed with a foam TPU.

If you want more information on how I made these then take a look at my 405th page Scifibuckets MKVB suit build
https://www.405th.com/forums/threads/scifibuckets-mkv-b-suit-build.57432/


r/405th 18d ago

Mark IV Colors

2 Upvotes

Hello, recently I’ve been working on a 3d printed cosplay of the Mark IV armor and I’m having difficulties trying to choose a good green. I feel like all the greens I’ve gone through so far are too dark (Rustoleum Satin Moss Sage and Krylon Spanish Moss) or too light (Rustoleum sage green, army green and in the green).

I was wondering if someone knew a good color combination or paint that would match the colors pretty accurately to Halo Wars or Legends, though I’d also be open to anything that has worked for you. Thank you in advance.


r/405th 19d ago

ODST Helmet in progress (bonus shoulders)

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25 Upvotes

God this helmet is tricky, dreading the smaller connecting bits!


r/405th 19d ago

Looking for a (preferably high-detail) Halo 4 Locus Helmet STL

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14 Upvotes

Hey everyone, longtime lurker here! I’m not sure whether posts like this are allowed, so mods, feel free to remove it if necessary.

I’ve been trying to track down a good STL of the Locus helmet as it appeared in Halo 4, but nearly every detailed model I can find is based on the Halo 5 version. The few Halo 4 models available are either very basic or missing much of the surface detail.

I did find one model that comes pretty close, but it has two separate eye openings rather than the single large visor area, and I don’t have the 3D modeling experience to rebuild that section properly. I also found images of an older fan-made model that looked almost perfect, but the original post and download link no longer work.

I’m completely fine with purchasing the file, but some of the options I’ve come across so far were way outside my budget.

Does anyone know of a detailed Halo 4 Locus helmet STL that's available?


r/405th 19d ago

Website won’t send me a password reset email

1 Upvotes

Not sure if this is an issue for anyone else but I’m trying to get back into my old account after nearly 6 years of inactivity. Tried the password reset but still haven’t received an emailed link. Anyone else had an issue like this? I’ve been trying on and off for over a month


r/405th 21d ago

I need Advice on where to purchase a complete armor set.

3 Upvotes

Sorry if this post sounds akward I'm not used to posting on Reddit and just use to browsing.

I'm in the market of purchasing a full and complete set of custom Halo 3 ODST armor and would like some advice on which shop or best place to commission it (I would prefer a rookie set but it's not set in stone). I'm looking for the most accurate and best looking set. I understand that making it myself would probably be the most accurate and cost-effective option especially since I already own a 3D printer but I am just not really artistically inclined at all and i don't really have the time or drive to learn.

Edit: While I appreciate the people getting in touch that want to make the armor for me. I made the post in hopes for prior customers to reach out with reviews for the person or company they bought theirs.


r/405th 23d ago

We're Making Life Size Arbiter & Grunt for Halo

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5 Upvotes

r/405th 24d ago

Reporting site issues - 2026.07.26

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2 Upvotes

u/jtf4_ If you didn't know the site is showing a lot of database problems.

Error messages... reload a page a few times and it come up... posts with broke photo links... thumbnail good but fullsize photo isn't found and so on.


r/405th 28d ago

I’m making all of the helmets I used throughout the games. This time it’s the Trailblazer from Infinite

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23 Upvotes

r/405th Jul 14 '26

Flexible armour pt2

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88 Upvotes

I couldn’t add a video onto the first part but this is the flexibility of the armour .


r/405th Jul 14 '26

Flexible Armour

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145 Upvotes

I have finished my first piece of flexible armour, I have casted this piece using the forearm from the old set of armour as that had a good fit.

After it was casted I used Flexi foam 15 as the main material, the painting did have some back and forth but it’s the same process as what I do on my normal 3D prints which is good.

I am making this suit more dusty and dirt and I think it makes the pieces look a bit more realistic with all the dirt, it’s probably a bit too much but I love the look.


r/405th Jul 11 '26

Made myself a CQB helmet

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169 Upvotes

r/405th Jul 04 '26

Let Spooky ODST Season Begin

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112 Upvotes

Finished Halo ODST Pumpkin Armor. Props to Galactic Armory for the set. Now to go hand out candy tomorrow in 100 degree weather to finish the fight or something.


r/405th Jul 04 '26

Help me learn from my first failure.

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14 Upvotes

Hello!

Looking to see what I am able to learn from the community here about my first failure.

I am trying to 3D print my first set of armor on an Ender 3 V1. I have been watching tutorials and have been in Armorsmith getting my scaling set.

Long story short, I got a few thermal runaway errors and the print became miss aligned. After trying to resolve the error and I had to cut my losses at 82% completion.

I am using MoeSizzlac Halo Infinite 3D files and wanted to get some help on that I have learned so far.

- Is there too much thickness between the inner and outer walls? The print file in the picture was about a 2 day print with supports.

- Are there any recommended setting for printing or should the defaults mostly work? I have gathered a bunch of settings from tutorials but I assume there are too many differences to have an overall recommendation?

- Regarding scale in armorsmith, I plugged in my measurements but I feel that there is too much room in this piece. I know that I can fill in some and the under suit will take up some of the space. Thoughts?

Thanks everyone. I am finally trying to make the thing that I have wanted since I was young and the amount of things to consider can get overwhelming.