Halo 4 Helmet Child Size C

by big_red_frog, published

Halo 4 Helmet Child Size C by big_red_frog Nov 11, 2013
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This is a resize and slight remodel of the adult size Halo 4 Helmet
It has been reduced by 15% and is now a small child size.
There is now also a medium size B version at
To better support detailed instructions and development, now hosting blog like content at hackaday projects which is in alpha, at

There is now a vac form for the visor at http://www.thingiverse.com/thing:217267

This will fit a 4-8 year old.
I thought I should complete this as it was the original intent.
Where practical parts have been combined to fit on a replicator 2 print bed. STL with multiple parts have also been added to aid in quick printing.
None of these parts are compatible with the Adult Size A, all mods for Child Size C will be kept in this model, to prevent confusion.
Photos will be added in due course, print and assembly is well under way.
All parts are correctly oriented in the STL files for printing at medium resolution .2mm, 2 shells, 10% infill. With raft and support.
Do not reorient, trust the "down" face. Do not allow Makerware to auto scale ( where was that thought a good idea to have an option that changes the model, that looks exactly the same as the option to move the model to the bed :-/ )
You can print as many parts as you can fit on your build plate at one time, without warping.
I will update this instance with pictures as I clean up and assemble.
9V battery mount is built into peak. tie wrap mounts are built into the walls throughout to run to led mounts.
Print insert and visor parts in most transparent material you have,
All magnets are placed directly in the parts, without the cups, so you only need the magnets themselves.
Magnets used are 3/8 x 1/10 99K32.03 - 19 off
Tension pins throughout model for assembly are 1/8" x 5/8", which are shorter than the original. 240-008 - 46 off, just buy a box of 100.
A single 9V battery mount is built into the peak, as well as wire guide warts at useful places internally.
Note that the M4 hex head bolts in this version are with 6mm shafts.
Will add parts count and details in due course.

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Jun 2, 2017 - Modified Jun 2, 2017

Hello, Anyone know what the inside dimensions are? I am looking to make this for a stuffed animal as a prop but I think i need it to be smaller and i prefer not to print it without knowing the dimensions first. I am going to glue it together so that is not a problem with the screws being different.


Comments deleted.

Thanks for the helmet. do you have a stl with the hole helmet, full model, not split in parts?

Modelling the helmet down into parts was a process where it was hollowed out from solid, and pins etc added along the way, so there is no viable single piece model in that history.

cool. thanks for the work!

Comments deleted.

Umm could you tell me the total print time? and how much filament?

Please read instructions for full size model A and reduce by ~15%

Also see images for size A that have each parts print time.


Also heavily dependent on your slicer settings and printer behavior.

Halo 4 Helmet Full Size A

any chance you could add the individual files. Most of the parts would fit my bed if they were not grouped.

My kids would love this.

All individual parts should already be in the full download of files as separate stl as well as full plates. If anything appears to be missing, please just ping...

Great resize. Wish I did this for Halloween! Andrew (http://3dhacker.com3dhacker.com)