Anyone have access to sheets of metal?

**Partyball** · 10-04-11, 09:15 AM

Originally Posted by Bunni

On a side note... what i wouldnt do for one of dem fancy computer controlled metal cutters.... uggg could change the world with one of those... doubt it would be a change for the better though

You could always get a plasma cutter. They are easy to use and make great cuts. 10x better than a torch in most applications.

**moving-target** · 10-04-11, 09:26 AM

water works also you could layer things sand water cinder block maybe some foam

**Bunni** · 10-04-11, 09:29 AM

Originally Posted by Partyball

Concrete is fairly cheap and easy to work with. Throw all kinds of hard garbage in it. Glass, metal, wire, etc. That is what they use to make some bank vault walls. Hard to find one tool to cut through all of that.

Also, builders sand or some sort of soil. Get a few dump truck loads of it and go to town on it.

Also, have to thought about gaping the material? Like 1" of steel to 1" of air then back to 1" of steel and stagger it like that? If I remember correctly, it took more force to penetrate the gaped material. Could obviously be wrong. It has been some time since I have played with such things.

You are talking about some crazy speeds. 6500 fps is a nasty speed. Especially with any sort of weight to it. How many grains or how much is the projectile going to weigh?

I had considered concrete, but its not very practical. Since i have to go to a remote area to fire the device, i'd have to mix, pour, and cure the concrete there. Which means i'd have to hull the tools to do so. Trying to hull the tools, concrete mix, and mixed bits, along with the device (especially with my mini cooper), would not be very effective. Suppose ill be renting a uhual in the end though...

The experiment is to primarily test/demonstrate armor penetration.

The model is scaled, so its only a few hundred grams, 400-500.

Hmmm the most practical method i know of is, is phonebooks (a LOT, but i've got my neighborhood donating old phonebooks, (probably mostly so i stop experimenting with devices that produce loud noises within the neighboorhood :<)) finally ending a fluid tank. A series of spaced steel may be superior to clumped but its arguable depending on the projectile, but you'd have to have some kind of mounting system (to hold the steel in place) that did not damage during impact.

See with a projectile like mine, its all about piercing, so a series of spaced steel may not do much as one would think in comparision to standard firearm ammunition (in which a series of spaced steel sheets would serve to absorb/leech energy from the projectile), were as a chunk of steel would absorb much of the energy upon impact (think of it like some fat guy getting punched in the stomach).

hmmm upp class change brb

**moving-target** · 10-04-11, 09:38 AM

remote area? why not just buy/find an old junker car /washer also you just need a bag of quick crete just add water and pour

and maybe you can make a homemade version of ballistics gel How to Make Your Own Ballistic Gel with cinderblocks behinde it

**Partyball** · 10-04-11, 09:41 AM

Ballistic gel is normally only to replicate human flesh.

**moving-target** · 10-04-11, 09:50 AM

yeah but make enough bricks and layer them might work anything to slow the projectile hell fill an old broke down washin machine with the stuff maybe or just a washing machine with blocks behinde it

**(2)manno** · 10-04-11, 09:50 AM

mfg.com

find a supplier, ask for a sample, have them ship it to wherever you're opening the wormhole.

**Bunni** · 10-04-11, 10:24 AM

Originally Posted by moving-target

remote area? why not just buy/find an old junker car /washer also you just need a bag of quick crete just add water and pour

and maybe you can make a homemade version of ballistics gel How to Make Your Own Ballistic Gel with cinderblocks behinde it

Remote area to fire. Had to get permission from LPD, and have FD and EMS present. LPD (in my area at leasts), requires the device be fired in a non populated area, the example the guy i spoke to said "like you would fire a firearm at a shooting range, youll need an area large enough in which the weapon can be tested" since under certain conditions, the projectile may explode on impact (or upon remote possibility, in air) similar to a nail-bomb, shooting shrapnel everywhere, the risk of this happening is especially high if the air is cold. so the surrounding area needs to be clear.

Though, ballistics gel is made to simulate human muscle. Which is not very good at stopping any thing that has sufficient piercing properties. Even more so, i'd need, A LOT of gel. :< But, again the experiment is to test the metal armor piercing capabilities, so steel would be best to simulate/compare.

Originally Posted by (2)manno

mfg.com

find a supplier, ask for a sample, have them ship it to wherever you're opening the wormhole.

D: Thats awesome! So many resources