Wednesday, September 23, 2015

Re: Armor Update 2

AR500 is all the rage on the interwebs...  

However, have you thought about using plastic?

Looking at prices of common available plastic sheets, it is close to AR500 and damn sight easier to use.  

Really really simple.  You can design it in CAD, go to your local banner shop and have them print the blueprints full size on vinyl sticker material(or paper and use some spray adhesive)

Use your handy sawzall, jigsaw or even plunge router to cut out on the lines.

One inch of butcher block is level 3 and some is 3A.  

Think bout it.

If your budget is higher think Ultem...


Update:  read this  http://www.partwell.com/polyethylene-the-difference-between

The cheap butcher blocks from ikea are the soft stuff.  Commercial grade sheets are more than likely the 500 grade.

When you buy it ask for the 1000 grade.

The article explains it better than I can.

I do not profess to be an expert at this.  I am on the journey of discovery and bringing you guys along for the ride.

Tomorrow the steel and plastic is finished at water jet. Unfortunately, (or fortunately) I have a sales demo tomorrow of 3D printers and training session.  So I will not be able to pick the samples up until Monday.

We have video and testing being set up, I hope the client will let me share it with you all here and see what people in other countries are doing.

Also I have a friend who does tactical training in Asia, working on getting some action video from that.  He was featured on Discovery Channel maybe a year and half ago.

In addition coming up are guest posts by a world traveling adventurer (and fellow AZ desert rat) with previews of his scout survival training jungle edition.

He is adapting Apache Indian tactics to Jungle terrain.  Previously he spent the last 6 months hanging out in the desert with the Apaches, and now is in the jungle along with several other adventurers preparing to film a new YouTube video series on warfare and survival.  Good stuff.

He also has some good desert bushcraft and scouting books out, of which I will publish some excerpts as soon as he gets out of the jungle and back in cell phone range to finalize the details.







8 comments:

Vincent Kanowsky said...

1" of plastic?
"Butcher block" plastic?

I think I'll pass

Anonymous said...

UHMWPE panels might be IIIA, and meet the technical specs for III, but they won't stop green tip (M855). That can be kind of a deal-breaker when so many people run green tip, and M855 ISN'T in the III spec. But for pistol rounds - you betcha.

Colorado Pete said...

How about a steel/plastic laminate? 1/4 inch of you favorite type steel armor with say 3/4 inch plastic bonded to the front? Or certain thicknesses plastic both front and back of the steel?

I have no idea what kind/how tough certain plastic laminates are, but I wonder if one can get the same effectiveness of 3/8" steel with less weight using the above idea? Any plastics experts out there?

Anonymous said...

What kind of plastic? HDPE?

admin said...

Butcher blocks, the plastic ones are made from polyethylene aka HDPE.

It is a high molecular weight plastic with long chain molecules.

It is not quite as strong as Nylon, however it has other properties that makes it better than nylon for some applications.

It is a common available material and used in machining.

It is resistant to most rounds except certain ball 5.56 ammo rounds and AP with a one inch thickness.

It is also half the weight of steel for same protection.

I have some 1/8 inch steel that is level 3.

the 1/4 inch is level 3A

The difference is level 3 is pistol calibers and 3a is good up to AK steel core rounds.

admin said...

We are only going for pistol protection right now. Backpack inserts, briefcase inserts, car seat backings.

For protection against the usual Asian street thief.

Asian business generally use a lot of cash and the owners are often taking it home with them at the end of the day.

Even a small hardware store or steel supplier will have easily 10k USD in cash sales.

I know a guy with several hardware stores who drives the crappiest car, wears old clothes, travels with a similar dressed body guard and carries some serious firepower under the ratty shirt. All because he keeps a low profile.

Anonymous said...

I tested Lexan and Lexguard to install in security situations-1"will stop most bullets..1.5"Lexguard stopped all incld 855-but Lexguard starts at 50-60$ a sq ft.

Jack Parker said...

How about multi layered UHMW and kevlar cloth. Epoxy resin layers together and hold together with a press while it cures.
Military vehicle armor is many layers of resin coated fiberglass or kevlar cloth formed and cured under pressure to keep it all together then water jet cut to shape as required to fit into door panels and floor boards. Still pretty heavy but it absolutely eliminates spalling of bullet fragments into your head, and will take multiple hits and hold together well.