Cryogenic hardened steel bullet resistant, ballistic plate

Cryogenic hardened steel bullet resistant, ballistic plate

Freeze tempering, cryogenic hardening a steel ballistic plate by bringing it to around -185 degrees celcius.
-Mainly done with liquid nitrogen.

Maybe as an extra tempering method to make it even harder.
Maybe first: Normal tempering. And baking tempering for 1-2 or more hours.

By Jef Koelewijn
From South-Holland, The Netherlands

Thinking out military shield shovel uses, tactics and more

Thinking out military shield shovel uses, tactics and more.

A couple of ideas:
It can be used to protect the side or front of the head.
It might be useful for peeking around corners or over cover walls, protecting parts of the head.
It could protect the back of the head if it can be strongly, fitted onto the backpack.
-Very useful for retreating etc.

A lighter and more bulletproof military shield shovel which is also made to be used as a (small) shield

I just found old military shovels which were also made to be used as a shield.
-Shield-shovels

And my idea is to make a newer version which is lighter and also more bulletproof.

By JK (Jef Koelewijn)
From: South-Holland, The Netherlands
Written on: 22-08-2019