how to make a bullet resistant shield!

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how to make a bullet resistant shield!

Рет қаралды 8,354

Күн бұрын

In this project video I cover the construction of two ballistic shields I made, modeled off the BZT-75. the goal was to make one level 3a(pistols) and one level 3 (m80, 5.56, 7.62x39) rated. Ballistic testing will be done over the weekend, so make sure to subscribe! They ended up being quite lightweight and cost effective, so I'm excited to see how they do. material list:
18 OZ Woven Roving fiberglass: www.tapplastic... I used 10 yards for both of the shields, if you were building one of your own you'll only need about 7 yards.
.25 in polycarbonate backer: freckleface.co... This place has the best prices for polycarbonate sheet around!
Resin used: Bondo fiberglass resin, from a hardware store: www.lowes.com/...
Ceramic strike face: cornell Ivory from lowes: www.lowes.com/...

Пікірлер: 90

@Techthisoutmeow 2 жыл бұрын

The ballistic tests are finished! check it out: kzfaq.info/get/bejne/ZrSDatiGkte5eZs.html

@benjamin6194 2 жыл бұрын

Wait... is that symbol the symbol that Constantine had his troops draw on their shields? Cause that would be cool if it were.

@jadenephrite 2 жыл бұрын

Thank you for your video. For those who are unfamiliar with the ☧ symbol on the shield, this is the monogram composed of the two Greek letters X superimposed with P. Its pronunciation is Chi-Rho. ☧ represented Roman Emperor Constantine and his army who defeated Maxentius and his army at the Battle of the Milvian Bridge on the Tiber River on October 28, 312. Thus ☧ is explained by the victorious Latin phrase "In hoc signo vinces".

@jeffhuntley2921 2 жыл бұрын

Can’t wait for the testing. Cool video!

@Techthisoutmeow 2 жыл бұрын

Thanks brother, yeah I'm excited to see how these handle!

@renjimalarky9185 2 жыл бұрын

Great stuff. Consider covering the brittle tile face and edge of the shield with a thin layer of foam or 1/16" polycarbonate/hdpe. That way a simple melee strike from a baseball bat or just dropping it on the ground doesn't shatter the ceramics. Adding a layer of mylar or aluminum window mesh offers protection to the bearer from weaponized microwaves.

@diegoguerra8736 2 жыл бұрын

Microwaves??

@renjimalarky9185 2 жыл бұрын

@@diegoguerra8736 Microwave Active Denial System, THOR directed-energy system, vehicle mounted active denial system (VMADS). Check these out.

@diegoguerra8736 2 жыл бұрын

@@renjimalarky9185 After some research, I've to say, it's just a shield, not a Faraday cage, I think it would not protect

@renjimalarky9185 2 жыл бұрын

@@diegoguerra8736 kzfaq.info/get/bejne/i6ljgplzxLGdhac.html

@gamecubekingdevon3 2 жыл бұрын

4:00 ---> you're welcome bro! glad to have been able to help regarding full measurments deductions :D

@TonyWright-tf5zy 10 ай бұрын

Friction lock straps, that way you don't need custom sewing by Mrs. Tech. They are even load rated for what it is worth.

@evansaw293 2 жыл бұрын

Man hearing them American prices blow my mind. Stuff is soo cheap down there. I tend to wrap a layer of fiberglass around each of my builds. Helps with spall and kinda holds everything together. I usually go 17 or 18 layers of fiberglass and then the last wrap puts one layer in front and two in back..

@jamessouza7065 2 ай бұрын

What kind of resin or epoxy do you use for the fiberglass? I didn't want to buy a little tiny can of bondo resin for 100 bucks I tried aluminite and it dosent get solid 2 weeks my test sample is consistency of almost frozen honey key word being (almost)

@partyzantzwycietegolasu5948 2 жыл бұрын

Great job! I would seriously suggest to cut bottom corners off. To make it no more than shoulder width. Make top 3" of shield see through policarbon. Have a look on police and swat shields.

@Techthisoutmeow 2 жыл бұрын

So more of a square design? I do like making the top transparent though, you could build up those areas with more polycarbonate, acrylic, glass, ect. And get it to a higher ballistic rating

@renjimalarky9185 2 жыл бұрын

@@Techthisoutmeow i have seen some shields that have given up on transparent sections altogether and instead place a camera on the front and a thin tablet screen for it on the back. Then it can benefit from thermal/night vision also.

@elwildo14 2 жыл бұрын

Excellent video

@Techthisoutmeow 2 жыл бұрын

Thanks brother, can't wait to shoot these!

@raam1666 2 жыл бұрын

love the cross and chi-rho!

@lotuselansteve Жыл бұрын

Very interesting video. I bend Polycarbonate by simply clamping to the edge of my bench and applying heat to the bend line.

@Zane-It 2 жыл бұрын

how exciting Another video!!!!

@Techthisoutmeow 2 жыл бұрын

Thanks, I'm trying my hardest to keep in a rhythm and upload every Thursday now!

@firefly6396 2 жыл бұрын

Are those wide corners on the shield awkward through doorways

@Techthisoutmeow 2 жыл бұрын

That's a good question, I'll do some mobility tests before the shooting tests and include it on the next video!

@conniestagg9685 2 жыл бұрын

Those are so cool!!

@highmolecularweightRDX 2 жыл бұрын

Constantinian late Roman Legionary prepares his shield on the eve of the Battle of the Milvian Bridge, 312 A.D.

@Techthisoutmeow 2 жыл бұрын

In hoc signo Vinces brother

@piratewhoisquiet 2 жыл бұрын

*colorized

@jonathanpawlowski3626 2 жыл бұрын

I like the shape. Maybe an attachment to be able to attach an extra on the bottom for either two singles or one full body idk. You always get me thinking with your projects. Thanks for all the tips. The milk jug project of course pulled me in to this channel but it's got me thinking about shields with the milk jug concept... cheap shield. Light. Think it would float?

@Techthisoutmeow 2 жыл бұрын

Yeah the shape was what drew me to the BZT-75 in the first place, it's quite unique. And I like the idea of attachments where needed!

@Techthisoutmeow 2 жыл бұрын

And you definitely could use recycled HDPE for the base! I just got all mine tied up in other projects lol.

@jonathanpawlowski3626 2 жыл бұрын

@@Techthisoutmeowyea different attachments, Maybe even like a knife holster or something! I like the idea of hdpe for the shield for cost..do you think the larger shield size would have the same stopping power as the smaller 6x6 squares?

@aarondavis5535 Жыл бұрын

thank yopu have an easer time bending plastic in the oven

@joshspeed7794 10 ай бұрын

Could alternating the weave by cutting on the bias help stagger the pattern in a way that would better trap the bullet? Like staggering bricks makes the wall stronger. If you cut each layer on a slight rotation, would use more fabric but maybe be worth it by limiting the access of the bullet even more?

@marcusjackson5837 2 жыл бұрын

Maybe polycarbonate in front of the fib glass since the fib glass breaks from sharp angle bends and the plastic would act as a contouring medium

@taylorgarza4539 2 жыл бұрын

Have you looked at making a steel sheet core polyethylene shield?

@Tam-jc8iz 2 жыл бұрын

Ah that's why I'm not getting notifications KZfaq unsubscribed me

@Techthisoutmeow 2 жыл бұрын

Oof, I hate when it does that. Well welcome back!

@Tam-jc8iz 2 жыл бұрын

@@Techthisoutmeow thanks, I'll be in the discord a bit more hopefully

@brokefangmagepunk3685 2 жыл бұрын

Love it. Is the testing coming out tomorrow? Keep it up brother

@Techthisoutmeow 2 жыл бұрын

It is brother! Glad to see you! I'm keeping up with the every Thursday video thing

@brokefangmagepunk3685 2 жыл бұрын

@@Techthisoutmeow thats awesome. Ive been away from KZfaq for quite awhile now so I'm catching on up some vids. Glad to see your going strong. Hope you and your family are well

@darrellhampton5057 2 жыл бұрын

May want to consider getting a roll or two of phenolic coated kevlar. 2 layers will stop a 9mm hp, 4 layers a 9mm ball round. 10 layers will stop ANY conventional pistol round, save for the "cop killer" bullets of the 90's, or obviously any rifle cartridge from an AR/AK pistol.

@elhogon Жыл бұрын

hello. I am from Argentina. please friend. How many fiberglass layers/sheets did you use? great video, ty

@laynelg8762 2 жыл бұрын

in theory would it be better to use HDPE instead of polycarbonate?

@Techthisoutmeow 2 жыл бұрын

For the laminate? Or the backer? Polycarbonate is stronger than hdpe for most applications. As a backer hdpe would need to be thicker, at the same weight. Hdpe biggest advantage is the cost, because it's easier to recycle at home. You could for sure use hdpe, but I would do some things differently.

@laynelg8762 2 жыл бұрын

@@Techthisoutmeow I meant as a backer but you're saying polycarbonate is stronger than HDPE I didn't know that.

@renjimalarky9185 2 жыл бұрын

Might be tough to bond with hdpe. Polycarbonate takes adhesives better

@Muckihito Жыл бұрын

Hey mate, i love your ballistic fiberglas projects! Such an interesting material 👍 Could you tell me, how much polyester resin did you use for your 3a shield? I want to try it out 😀

@0meat 2 жыл бұрын

I've heard about people trying to use night vision dash cams on phone vr. Any thoughts?

@bearshanginon1506 2 жыл бұрын

What’s up with the SUV build?

@theeternalklansmanmaestro5039 2 жыл бұрын

I have never seen these 2 symbols (Px and orthodox? Cross )at the same object, ist this a reference to some franchise like warhammer etc?

@Techthisoutmeow 2 жыл бұрын

The chi rho (px symbol) is one of the oldest Christian symbols, and the orthodox cross( byzantine ☦️ cross) is the main symbol of the orthodox church. I'm unfamiliar with Warhammer off hand, but I know that they use some red on white colors with various symbols.

@Techthisoutmeow 2 жыл бұрын

@@popinmo lol of course you would know about Warhammer, they do use red on white for some of the soldiers right?

@crb7799 2 жыл бұрын

I wonder about using something like cordura fabric

@ChucksSEADnDEAD 2 жыл бұрын

Above 1200D cordura it's classified as "ballistic nylon" if I'm not mistaken.

@SwapyLoL Жыл бұрын

i am fucking invincible!

@larrymyers5858 Ай бұрын

Can I buy a shield from you?

@camarad777 2 жыл бұрын

You are using "Plain Weave" fiberglass. Dose it work to use cheaper fiberglass like "Mat" (i hope i m pronouncing correctly)? Thickness/protection ratio, will have the same number of sheets if i m gonna use cheaper fiberglass?

@piratewhoisquiet 2 жыл бұрын

Unfortunately, to the best of my knowledge chopped strand fiberglass matting is effectively useless for ballistic protection. Fiberglass laminate armors work on a similar principle to Kevlar, they rely on the glass fibers being woven together, so that the tensile strength of every strand is reinforced by the tensile strength of every other fiber it interlocks with. Woven fiberglass is to chicken wire as chopped strand fiberglass matting is to those bead curtains people hang in doorways. One will effectively restrain chickens when properly employed, the other has no chance of restraining anything.

@camarad777 2 жыл бұрын

@@piratewhoisquiet Woven fiberglass like he used in this vid, is too expensive in my country, and by my estimates to make two plates (rifle rated) it will cost me about 500$. The one used in making septic tanks , bathtubs, etc... is about 3 times cheaper, but if its useless for protection , there is no point to try it. Thx for explain g...

@vostpelk1596 2 жыл бұрын

Yoooo is that an orthodox cross on the shield ? Love it !

@Techthisoutmeow 2 жыл бұрын

Yes sir! Gotta be my favorite cross ☦️

@golandanan 2 жыл бұрын

Plese tray silk fabric I watch your work and think you ar hgily analitic mind i lern lot from you tnx

@whyukraine 2 жыл бұрын

I feel like _not_ bending is the better option.

@whyukraine 2 жыл бұрын

Couple reasons for this: _feel_ like, with almost all materials, wrapping the core material multiple times with a fabric intended to absorb the lateral stress & hold the material together, will work better across a flat plane.

@whyukraine 2 жыл бұрын

2nd, the primary advantage of a pavise style shield is the strength of the "ridge". When you melt the poly, it is weakened rather than strengthened.

@whyukraine 2 жыл бұрын

If you really want to make a creased ridge on a shield in a modern ballistic context, better to a) make the shield from 2 pieces, connected by a semi-flexible, springed, hinge, to absorb some impact & allow the 2 pieces to retain integrity.

@whyukraine 2 жыл бұрын

b) offset the shield handle from the impact surface with a center-grip (rather than strapped as shown) to reduce the stress & available target area. Its fine to include the strap option, in fact multiple strap options, for carrying.

@whyukraine 2 жыл бұрын

Think about it this way: with a shield like this, mounted with a bicycle mirror, I could basically shoot around corners. That would be the primary, amazing advantage.