Halo 3 Marine Post Build thread + ad ons and H3 Marine Backpack

HoundsOfMeath

New Member
Hey friends first build thread so it probably won't be the most organized. I'm going to try to do this to help myself get back on track to finishing the marine.
I'll include some of the references I used but I'll link the rest to a drive folder for anyone interested. I'll also be including the files I used and links to as much of the retail items I used as I can.
Backstory
I've been working on and off for a while on a Halo ce Master chief but it's no where near finished. Planet Comicon 2023 was coming up and I heard that a large group from the 405th Midwest was going to be there along with many members I've looked up to for a while. I was at the con the year before but with no cosplay. I really wanted to be a part of the community and didn't want to miss the opportunity. So I decided on trying to speed build a halo 3 marine. I started off with the 405th armory files and the AndrewDFT patterns but almost immediately became dissatisfied with the lack of detail, that's when I miraculously found SpiderMonkey60s Marine speed build. I was kindly gifted the files and got to work immediately with only one month before the con. I never want to do that again lol, I did NOT take care of myself during that month. The schedule was work on the armor till 1AM every night, prep for work, sleep, and then wake up at 5:30AM for work. I ended up watching all of Better Call Saul and Breaking Bad during that month. Anyways after gluing the last buckles on the night before the con, it was time. I had a wonderful time with everyone and it was great to meet all of you. I want to thank everyone on the 405th Discord who encouraged me while making this.
IMG_1375_polarr (1).jpg


HUGE thanks to Spidermonkey60 for his halo 3 marine files. They are the best Halo 3 marine files out there IMO and he's given me permission to link them here for you. Another huge thanks to PlanetAlexander who modeled the halo 3 marine rucksack for me!

Please check out these build threads as well, they were a massive help during all of this !
NobleofDeath16s reference thread
Fallens Halo 3 Marine Pilot
TurboCharizards Halo 3 Marine Pilot
SpiderMonkey60s Halo 3 Marine Speed build


Here's how I'm going to try to structure the thread

1. Completed build commentary including: Files used for armor, in progress photos, Post build detail photos, commentary on the build process
2. Ad on plans and fixes including: Files used and progress photos
3.Purchased parts list

Completed build commentary
Starting off with the helmet. I initially used the 405th armory files but they were pretty inconvenient to put together. I instead use the below file made by TurboCharizard.
PXL_20230227_044621488.jpg
PXL_20230227_044629305.jpg
PXL_20230227_044633816.jpg
PXL_20230301_003707139.jpg
PXL_20230228_231608640.jpg




Next would be the chest and back lots of big pieces, but Spidermonkey60s files were superb and very easy to follow making for a very fun build. I used 10mm foam for most of it to keep it pretty rigid.
PXL_20230301_062651870.jpg
PXL_20230301_062642034.jpg
PXL_20230303_061656619.jpg


Here you can see the collar on the back armor was pretty tall. This made the helmet shift pretty badly whenever I turned by head at all, so I cut it down.
PXL_20230302_014305176.jpg
PXL_20230302_014250121.jpg
PXL_20230302_030215950.jpg


Here are some more detailed photos of the back armor post build. The strapping was a lot of fun, I got the inspiration from Dust Factory Makes on Etsy DustFactoryMakes - Etsy
The shoulder straps are made from a the straps off of a USGI Duffle bag , 1" webbing, buckles, d rings velcro. 2" metal slides and 2" to 1" webbing reducers.
The end of the straps are securely velcro strapped to the inside so that the straps can be completely removed if necessary to thread other item and buckles on like the magnetic buckles for the upcoming back pack . The "rivets" were just half fake pearls. I also plan to add a ton of neodimium magnets to the inside of the raised center square on the back.

PXL_20230806_030237146.jpg
PXL_20230806_030446651.jpg
PXL_20230806_030457127.jpg
PXL_20230806_030228139.jpg
PXL_20230806_030521832.jpg

The chest
Pretty fun, first time success build, you'll want to reinforce as much of the under arm connection to the chest plate as possible, there will be a lot of stress there.
I used two sided 2" velcro for the webbing on the chest, it's threaded through the chest so it can be removed if you want to slip pouches with loops on like the perfect horizontal pouch I copped from work. Plus with it being velcro you can attach and infinite number of things to it
I connected the under arm front and back using quick release bike helmet buckles, at the time I only could find red and black ones so I had to paint them black and that paint has quickly faded. In that case I will be linking the all black ones I founds recently.

PXL_20230303_061616792.jpg
PXL_20230303_061629342.jpg
PXL_20230806_030211457.jpg
PXL_20230806_030404045.jpg
PXL_20230806_030417313.jpg
PXL_20230806_030219193.jpg
PXL_20230806_030228139.jpg


Shoulders
These were easily the most challenging pieces to build but I was very satisfied with the result

PXL_20230307_055308001.jpg
PXL_20230307_055315637.jpg
PXL_20230314_034414598.jpg
PXL_20230806_030053098.jpg
PXL_20230806_030100559.jpg

PXL_20230305_204951579.jpg
PXL_20230305_205103614.jpg
PXL_20230305_205124131.jpg

And here is the AMAZING shoulder brace someone on the discord shared with me, perfect for strapping on just about any shoulder armor. You can see it already has velcro on the side strap, all I had to do was sew on some velcro on the top part of the shoulder and Blam perfect. Here's the link to the shoulder harness
Amazon.com


The ab plate was always meant to be a temporary piece so its the lowest quality part of the armor, I just took the ab file from Spidermonkey60 and added the cod flap. From the references I used it appears to be soft armor, perhaps some space age kevlar, when I made it the first time I made the ab part too thick so it likes to stick out pretty far. It's just held in place by the belt and the cod flap is secured to the pants with some velcro.

When I make this again I plan to make the ab section much thinner, ad some ridges to the outline and overlay the whole piece with some dark stretchy fabric to simulate soft armor

PXL_20230310_024304836.jpg
Screenshot (54).png



Butt fanny pack

This was pretty fun. I stole a tightening knob from a saw for the cog on the back and added a zipper so it can open up. Currently it's set up to be able to be removed from the belt with velcro, however that means it pretty loose and can be knocked off easily. So I'll be modifying it to securely attach to the belt, either different looping or possible alice clips
PXL_20230806_030241987.jpg
PXL_20230806_030253907.jpg
PXL_20230806_030255900.jpg
PXL_20230806_030313625.jpg


The thighs were pretty simple but definitely needed some improvements after the first time I wore it out. They're made out of just one layered of high density 5mm foam and worbla. My mistake the first time was actually looping the thigh straps through the slits cut through the pads. Surprisingly only one tore while dance with zero skill at the con, but that was enough to ruin it . So right now I'll just be remaking one of them, adjusting the Hight on the strap that connects to the belt because they sat too low, adding magnets in-between the foam and worbla for props and such, and strengthening the strap attachments. Oh and also adding fake rivets


PXL_20230807_045205617.jpg
PXL_20230807_045200676.jpg
Screenshot (2).png

Knees, calves, and shins

These were pretty easy again thanks to spider monkeys files, however I decided to go with the 405th Armory files for the shins specifically. I liked the more curved nature of those files . I made these at the tail end of con crunch so I don't have any in progress photos. The knees were quick and attached to these knee pads I found at harbor freight. I'll link them for anyone interested.
If anyone has any suggestions for minimalist but secure knee pads I'd love to see them. I had to heavily modify and reinforce the velcro on these .

The calves "WERE" pressure fit but after day one at the con they stretched enough to constantly fall down so I will be attaching them via velcro to the knee pads.

The shins like I said were made using the 405th armory files, just 6 pieces of 5mm foam with the straps sandwiched in between with E600

PXL_20230308_194639635.jpg
PXL_20230806_030145728.jpg
PXL_20230806_030149949.jpg
PXL_20230806_030117359.jpg
PXL_20230806_030122814.jpg

"PAIN"ting

Seeing as I made this is just a month, I was painting till 1 -2AM the last few days before the con just to get it done in time.

All of it was hand painted with liquitex paints. Thankfully their darker green worked perfectly for the marine. Some black here, light grey there. I used Plaid fx shiny and matte blue and purple for the blood.


PXL_20230314_034407866.jpg
PXL_20230316_003910613.jpg
PXL_20230316_033247055.jpg

Ran out of file space
 

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A few more photos of painting,
PXL_20230316_042031656.jpg
PXL_20230806_030700679.jpg
PXL_20230806_030656361.jpg
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PXL_20230806_030649579.jpg


I got a mannequin recently from a generous J.C.Penny manager

PXL_20230602_000610846.jpg

So there you go, That's where the armor is as of now.
So, what's next ?

Next is fixing the bits that broke, better strapping and making new parts
Remaking the thigh pads and adding magnets
Remaking the ab plate, making it look like soft armor
Attaching velcro straps from the calf armor to the knee pads
Making the elbow pads
Making the back pack with the files made for me by the talented PlanetAlexander
Making a Halo 3 Battle rifle, I’ll probably make that a separate thread
Dying the combat fatigues to a light tan
Finally buying extra pouches and soft armor.

I'll be adding the list of links to products in the next few days and a drive link to my mess file of reference images
 

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...only one month before the con. I never want to do that again lol, I did NOT take care of myself during that month. The schedule was work on the armor till 1AM every night, prep for work, sleep, and then wake up at 5:30AM for work...
You sir are actually insane. This is beyond insanity.

You marine looks phenomenal though! Absolutely stellar work!

Where can you buy liquitex paint? Does it crack, or is it flexible? Do you need to apply a primer over the foam first? Did you do a clear coat? I've been experimenting with flexible paint for my new suit but PlaidFX is not applying nicely to my foam. If you would be so kind, can you send a picture of the specific paint tube/bottle you used to get such great results?
 
You sir are actually insane. This is beyond insanity.

You marine looks phenomenal though! Absolutely stellar work!

Where can you buy liquitex paint? Does it crack, or is it flexible? Do you need to apply a primer over the foam first? Did you do a clear coat? I've been experimenting with flexible paint for my new suit but PlaidFX is not applying nicely to my foam. If you would be so kind, can you send a picture of the specific paint tube/bottle you used to get such great results?

Thank you so much. You can find it online, I got all mine from hobby lobby, I used hooker green I think.

And I just put a couple layers of plastidip down and painted it straight on with a fine brush. It only has chipped on one spot I didn't plastidip . It doesn't crack , flexes well and barely wrinkles. There's definitely more professional ways of painting like with air guns and all the stuff NovemberBlack productions is doing , but this worked well for me in a pinch.
 
Here you'll find the zip. for Spidermonkeys marine
https://www.405th.com/forums/attachments/h3marine-zip.334391/?hash=e80f7cee47ded791fb836832500c3490
The elbow and shin I used from the 405th Armory
Finally TurboCharizards CH252 Marine helmet
Here's the links to the stuff I've already bought for the suit that I've used so far, and I'll try to link to some of the stuff I had on hand already.

Here is a drive folder link full of a mess of references images I pulled together

2" silver webbing tri glides
Amazon.com
Helmet padding
https://www.amazon.com/gp/aw/d/B07PGF4CTH?psc=1&ref=ppx_pop_mob_b_asin_title
Western safety knee pads
Glasses
Amazon.com
BDU pants
Amazon.com
BDU Top
Amazon.com
Shoulder brace
https://www.amazon.com/gp/aw/d/B01LE5QYNQ?psc=1&ref=ppx_pop_mob_b_asin_title
Bike helmet clips
Amazon.com
3/4" webbing and buckles
https://www.amazon.com/gp/aw/d/B078P3GMWV?psc=1&ref=ppx_pop_mob_b_asin_title
1" webbing , buckles, tri glides, d rings pack

These are the best packs of straps I've found in one purchase

https://www.amazon.com/gp/aw/d/B08LD8CJ8D?psc=1&ref=ppx_pop_mob_b_asin_title
Double sided 2" Velcro
https://www.amazon.com/gp/aw/d/B00JWU77N2?psc=1&ref=ppx_pop_mob_b_asin_title
Fatigue cap
Amazon.com
1" webbing adjusters
Amazon.com
2"-3" webbing reducer
2

This is the list of things I have to possibly purchase to improve it
New knee pads

https://www.amazon.com/dp/B0B8D48XK...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Wrist pouch for the rolled down sleeps variant
https://www.amazon.com/dp/B081MY8RQ...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Simple tac pouch
https://www.amazon.com/dp/B01I5GSK1...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Wrist shotgun shell pouch
https://www.amazon.com/dp/B07CQ25FG...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Simple map wrist pouch
https://www.amazon.com/dp/B0C3F7XGX...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Fidlock magnetic buckles for the back pack
https://www.amazon.com/dp/B087TMJXK...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Sci Fi esq magnetic buckles for the backpack
https://www.amazon.com/dp/B094D98FQ...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Black Alice pouches
https://www.amazon.com/dp/B001FCAIG...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Simple square cigarette pouch
https://www.amazon.com/dp/B08F7SDZP...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Stylized gloves
https://www.amazon.com/dp/B0B92JP9K...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Black helmet buckles
https://www.amazon.com/dp/B096ZJTT3...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Another simple pouch
https://www.amazon.com/dp/B001KKMIR...5XMG2SLH&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it


There are a few more things to ad to the want to buy list but I haven't researched yet, like the coloring to dye the uniform but if you want to know about that check the other build threads above that I linked which cover that pretty well.
d
I've got some gift projects to finish still, but as soon as those are done I'll post updates on the fixes to the armor and the back pack build her.

- Thanks for reading and to everyone who helped me out with the build
 

Attachments

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  • halo-3-unsc-marine-elbow-foam.pdo
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  • CH252 helmet (halo 3 marine).pdo
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Last edited:
Thanks for all the links! I'll be buying the same helmet pads as you I'm sure.
 
Hey friends first build thread so it probably won't be the most organized. I'm going to try to do this to help myself get back on track to finishing the marine.
I'll include some of the references I used but I'll link the rest to a drive folder for anyone interested. I'll also be including the files I used and links to as much of the retail items I used as I can.
Backstory
I've been working on and off for a while on a Halo ce Master chief but it's no where near finished. Planet Comicon 2023 was coming up and I heard that a large group from the 405th Midwest was going to be there along with many members I've looked up to for a while. I was at the con the year before but with no cosplay. I really wanted to be a part of the community and didn't want to miss the opportunity. So I decided on trying to speed build a halo 3 marine. I started off with the 405th armory files and the AndrewDFT patterns but almost immediately became dissatisfied with the lack of detail, that's when I miraculously found SpiderMonkey60s Marine speed build. I was kindly gifted the files and got to work immediately with only one month before the con. I never want to do that again lol, I did NOT take care of myself during that month. The schedule was work on the armor till 1AM every night, prep for work, sleep, and then wake up at 5:30AM for work. I ended up watching all of Better Call Saul and Breaking Bad during that month. Anyways after gluing the last buckles on the night before the con, it was time. I had a wonderful time with everyone and it was great to meet all of you. I want to thank everyone on the 405th Discord who encouraged me while making this.
View attachment 334263

HUGE thanks to Spidermonkey60 for his halo 3 marine files. They are the best Halo 3 marine files out there IMO and he's given me permission to link them here for you. Another huge thanks to PlanetAlexander who modeled the halo 3 marine rucksack for me!

Please check out these build threads as well, they were a massive help during all of this !
NobleofDeath16s reference thread
Fallens Halo 3 Marine Pilot
TurboCharizards Halo 3 Marine Pilot
SpiderMonkey60s Halo 3 Marine Speed build


Here's how I'm going to try to structure the thread

1. Completed build commentary including: Files used for armor, in progress photos, Post build detail photos, commentary on the build process
2. Ad on plans and fixes including: Files used and progress photos
3.Purchased parts list

Completed build commentary
Starting off with the helmet. I initially used the 405th armory files but they were pretty inconvenient to put together. I instead use the below file made by TurboCharizard.
View attachment 334264View attachment 334265View attachment 334266View attachment 334267View attachment 334268



Next would be the chest and back lots of big pieces, but Spidermonkey60s files were superb and very easy to follow making for a very fun build. I used 10mm foam for most of it to keep it pretty rigid.
View attachment 334269View attachment 334270View attachment 334271

Here you can see the collar on the back armor was pretty tall. This made the helmet shift pretty badly whenever I turned by head at all, so I cut it down.
View attachment 334272View attachment 334273View attachment 334274

Here are some more detailed photos of the back armor post build. The strapping was a lot of fun, I got the inspiration from Dust Factory Makes on Etsy DustFactoryMakes - Etsy
The shoulder straps are made from a the straps off of a USGI Duffle bag , 1" webbing, buckles, d rings velcro. 2" metal slides and 2" to 1" webbing reducers.
The end of the straps are securely velcro strapped to the inside so that the straps can be completely removed if necessary to thread other item and buckles on like the magnetic buckles for the upcoming back pack . The "rivets" were just half fake pearls. I also plan to add a ton of neodimium magnets to the inside of the raised center square on the back.

View attachment 334275View attachment 334276View attachment 334277View attachment 334278View attachment 334279
The chest
Pretty fun, first time success build, you'll want to reinforce as much of the under arm connection to the chest plate as possible, there will be a lot of stress there.
I used two sided 2" velcro for the webbing on the chest, it's threaded through the chest so it can be removed if you want to slip pouches with loops on like the perfect horizontal pouch I copped from work. Plus with it being velcro you can attach and infinite number of things to it
I connected the under arm front and back using quick release bike helmet buckles, at the time I only could find red and black ones so I had to paint them black and that paint has quickly faded. In that case I will be linking the all black ones I founds recently.

View attachment 334280View attachment 334281View attachment 334282View attachment 334283View attachment 334284View attachment 334285View attachment 334286

Shoulders
These were easily the most challenging pieces to build but I was very satisfied with the result

View attachment 334287View attachment 334288View attachment 334289View attachment 334290View attachment 334291
View attachment 334292View attachment 334293View attachment 334294
And here is the AMAZING shoulder brace someone on the discord shared with me, perfect for strapping on just about any shoulder armor. You can see it already has velcro on the side strap, all I had to do was sew on some velcro on the top part of the shoulder and Blam perfect. Here's the link to the shoulder harness
Amazon.com


The ab plate was always meant to be a temporary piece so its the lowest quality part of the armor, I just took the ab file from Spidermonkey60 and added the cod flap. From the references I used it appears to be soft armor, perhaps some space age kevlar, when I made it the first time I made the ab part too thick so it likes to stick out pretty far. It's just held in place by the belt and the cod flap is secured to the pants with some velcro.

When I make this again I plan to make the ab section much thinner, ad some ridges to the outline and overlay the whole piece with some dark stretchy fabric to simulate soft armor

View attachment 334295View attachment 334296


Butt fanny pack

This was pretty fun. I stole a tightening knob from a saw for the cog on the back and added a zipper so it can open up. Currently it's set up to be able to be removed from the belt with velcro, however that means it pretty loose and can be knocked off easily. So I'll be modifying it to securely attach to the belt, either different looping or possible alice clips
View attachment 334297View attachment 334298View attachment 334299View attachment 334300

The thighs were pretty simple but definitely needed some improvements after the first time I wore it out. They're made out of just one layered of high density 5mm foam and worbla. My mistake the first time was actually looping the thigh straps through the slits cut through the pads. Surprisingly only one tore while dance with zero skill at the con, but that was enough to ruin it . So right now I'll just be remaking one of them, adjusting the Hight on the strap that connects to the belt because they sat too low, adding magnets in-between the foam and worbla for props and such, and strengthening the strap attachments. Oh and also adding fake rivets


View attachment 334301View attachment 334302View attachment 334303
Knees, calves, and shins

These were pretty easy again thanks to spider monkeys files, however I decided to go with the 405th Armory files for the shins specifically. I liked the more curved nature of those files . I made these at the tail end of con crunch so I don't have any in progress photos. The knees were quick and attached to these knee pads I found at harbor freight. I'll link them for anyone interested.
If anyone has any suggestions for minimalist but secure knee pads I'd love to see them. I had to heavily modify and reinforce the velcro on these .

The calves "WERE" pressure fit but after day one at the con they stretched enough to constantly fall down so I will be attaching them via velcro to the knee pads.

The shins like I said were made using the 405th armory files, just 6 pieces of 5mm foam with the straps sandwiched in between with E600

View attachment 334304View attachment 334305View attachment 334306View attachment 334307View attachment 334308
"PAIN"ting

Seeing as I made this is just a month, I was painting till 1 -2AM the last few days before the con just to get it done in time.

All of it was hand painted with liquitex paints. Thankfully their darker green worked perfectly for the marine. Some black here, light grey there. I used Plaid fx shiny and matte blue and purple for the blood.


View attachment 334310View attachment 334311View attachment 334312
Ran out of file space
can we have a video chat either on discord or skype? Im currently working on my own Marine armor and I have questions for you please
 

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