Halo Magnum Magnetic holster - thigh

Sharkoom

New Member
Hello everyone,


Below is my feedback and experience building a magnetic holster for the Halo magnum.
This is my first post here, so I’m absolutely open to any constructive comments, I really want to keep learning and help this amazing community grow.

First Impressions

At first glance, it doesn’t look very technical:
A magnum pistol held to the thigh with magnets.

I used the excellent model by Peerless Props, which includes a functional magazine and the ability to chamber a round (is that how you say it? ).
I really wanted to keep that level of detail, not very useful at conventions, but it makes a huge difference, gives the piece a lot of charm, and honestly, it’s just way cooler for my own personal satisfaction, yeah !

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The challenge, keeping the Mechanism Functional

Keeping those mechanisms intact severely limits the available spots to place magnets.
I needed to fit 25 kg neodymium magnets (40×10×5 mm), and I needed two to ensure the pistol stays aligned and doesn’t swivel around. A single magnet wasn’t stable enough.

Here’s an important note: I initially used countersunk magnets rated 20 kg, thinking they’d be strong enough.
However, because these magnets were not exposed (they weren’t “naked”), the magnetic force was greatly reduced. Switching to 25 kg naked magnets made a huge difference the grip was immediate and rock solid.

So I created a slot for the first magnet in this area, and the second one… ended up inside the magazine.

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Thigh Installation

Inside the thigh piece, I also added a pair of magnets.
I couldn’t attach any metal plates because the distance between my leg and the plastic armor would reduce the magnetic force too much.

At first, I wanted to glue the magnets directly (ugly, yes, but hidden inside).
Then I imagined a scenario where security at a convention asks me to remove them (why not ?..), so I chose to make them removable instead.

I built two small PLA pockets and welded them inside the thigh armor.
Perfect for sliding the magnet pair in and out. They lock in place, don’t move, and can be removed anytime if needed.

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Final Result

I now have a pistol that snaps perfectly onto my thigh and most importantly doesn’t move around at all.
During 7 hours at a convention, it only fell once… during a rushed bathroom break where I was way too distracted
Otherwise, during hugs, poses, interactions, everything held.


Videos in action

  • Small demonstration of the holster mechanism

  • Behind‑the‑scenes video of the build for Instagram coming soon
 
Welcome to the 405th! First off, what an incredible suit, and magnum to match! That connection looks super solid, and I especially love the magnet sheathes for quick removal. Super smart. When you put the magnets inside the magnum, did you do it mid-print, or just leave a gap where you could slot it in during assembly? I’m especially curious about the one in the magazine
 
Thanks for your feedback!
No, the magnum in the kit is made of multiple pieces. I only removed a bit of material the size of my magnet between the grip and the upper part, then inserted it during assembly.
For the magazine, it was even easier, the magnet fits just right, so I just had to slide it in before closing the parts, and that’s it!

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