/diy/ - Do It Yourself

>>1481711
How much cheese pizza is in this safe?

I remember when I first learned to weld, too.

The outer box will be built to withstand physical attack. Something like D2 tool steel would resist cutting, but also any attempts to cut it would cause significant vibration. I’m thinking a 20”x20” box from 1.5” D2 plate would be extremely cut resistant, and just and extremely hardened safe even without sensors.

The inner box will be stacked like this: [ mild steel plate [ lead liner [ fire clay wall and floor [ thermite [ contents + electronics]]]]].
The refractory fire-clay wall will allow the safe to be safe for storage in a building. The lead-liner will prevent radiological attacks to detect the contents.

I’m open to ideas for other unconventional entry methods that I could attempt to detect. Acid corrosion is one I’ve thought of, but I’m not sure how to effectively combat it. Possibly a conductive mesh grid could be sensitive to acid/solvents.

>>1481716

If it works, I might sell it.

>>1481718
I've been welding for 5 years.

claiming a trip

>>1481711

>it’s worth more to me to have the physical contents obliterated than for anyone else to access them.

this has to be the stupidest fucking idea thats not worth the time or effort to build. if you dont want anyone to see it just destroy it. why go thru all this bullshit for nothing. maybe if you stop downloading child porn you wouldnt need to hide it you sick motherfucker

>>1481733
Because you still want/need access. Why is this hard for you to understand?

There are plenty of things people want to keep out of the wrong hands, guaranteed. Intellectual property is a huge one, but yea obviously there's stuff like porn and drugs.

If you think there aren't people paranoid enough to want this, you're wrong.

>>1481734

its still way too much overkill for OP to protect his child porn collection. shock sensors? acid sensors? thermal sensors? like seriously who goes thru this much trouble for a lock box.

just get a fucking safety deposit box.. you need 2 keys to open it. the bank has one and you have the other. noboody else can get into it and bam its already in a safe. the bank doesnt care what you put in it as long as it isnt like a bomb or something.

>>1481711
>The sensor system will also fail-deadly, destroying the contents if it runs out of battery charge.

if it runs out of charge whats it gonna power to "destroy" the contents?

sorry OP but you are a moron

>>1481739
Shock sensors and thermal sensors are already standard tradecraft for the highest end safes.

http://lockwiki.com/index.php/Relocker#Glass_Relocker

It's a strong claim to be able to make: that a safe is uncrackable. This is what I'm after. Absolute protection, come spy agencies, financial institutions, rival cartels, anything. They. Will. Not. Get. It. They cannot compel you to give it.

>>1481741
The thermite will be electromagnetically triggered. An easy way would be an electromagnet that holds a spring loaded pin off a primer (like a handgun). If power is disabled, the electromagnet will release and the primer will ignite the thermite.

>>1481743
forgot trip, this is me.

Don't rely on thermite
https://www.youtube.com/watch?v=1M73USsXHdc
https://www.youtube.com/watch?v=-bpX8YvNg6Y

>>1481745
I don't want to build a bomb. This needs to burn without creating a ton of pressure.

>put cell phone away
>go to secluded location
>bury everything in a wood box somewhere discreet

wa la

>>1481746
They don't just do bombs

this entire thread is retarded, OP is trying to hide his child porn. its pretty pbvious especially to go thru such measures to protect it, or destroy it if its discovered... and you people are encouraging this fucktard to hide his child porn

>>1481750
Only a moron needs to hide child porn. Just don't download it in the first place

>>1481759

tell that to OP. thats what he wants to do. nobody goes thru that much trouble to hide anything unless its highly illegal.. even druggies wont go thru this much trouble. you can get more prison time for CP than you would for drugs... so yeah OP probably makes his own child porn and needs to hide it in case any of his victims come forward

>>1481762
God damn it. This is why I don't post here anymore.

Believe it or not, I'm not an anon hiding behind his screen. Last time I posted here my project made national news. I plan to make this public too, and sell it if it works.

Sure, this might enable people to do illegal shit, but I'm a libertarian who believes in security and that honestly doesn't bother me. People who want to store child porn just use encryption, which is already uncrackable. Your argument is just stupid.

>>1481764
>Last time I posted here my project made national news.

cool story bro. your "safe" is way too complicated for normal people to "safeguard" anything normal. maybe some specialty market, or individuals to hide their drugs or child porn

>>1481767
>your "safe" is way too complicated for normal people to "safeguard" anything normal. maybe some specialty market
>specialty market

Wow, you got it. Amazing!

Do you think the market for this fucker ($144,000) isn't a "specialty market"?

>>1481711
a lock with a pin arrangement similar to this might be pretty annoying to pick

>>1481745
y'know you could just shoot it...

giant gaping holes where data should be, quick and reliable as long as you're there to do it.

>>1481711

>>1481764
what was your last project links kiddo

Inb4 OP accidentally burns down his house

>>1481743
>The thermite will be electromagnetically triggered. An easy way would be an electromagnet that holds a spring loaded pin off a primer (like a handgun). If power is disabled, the electromagnet will release and the primer will ignite the thermite.
you are hands down the biggest retard on /diy/ You're going to kill yourself or at least lose a limb and I think that's fantastic because then you'll stop posting.

>>1481743
>They cannot compel you to give it.
Sounds like someone's unfamiliar with rubber hose cryptanalysis.

Thermite Options
You can get "CadWelds" that are practically tha same. Just add the voltage, you dont have to start from scratch. They come in coffee pod sized things CA15 or CA45. I think the numbers refers to grams of powder

>>1481813
That's when you use the decoy password.

You could put a pressuized tube in the lining with a simple pressure sensor to detect a breach.

>needs a safe that only can be opened with some complicated password
>needs it to have sensors to detect anything
>basically will destroy itself if wrong password is used
>will destory itself with thermite if battery runs out
>specialty market safes have these features that are totally not dangerous to person or property
>still denies on hiding child porn
>no need for such drastic measures to hide drugs or guns because they wont get you 50 years in prison like child porn will

Yeah OP, totally believe you. also because you are a tripfag.

>>1481711

Yeah, why don't you have a seat right over there....

How are you going to charge it? Surely you can't have cables simply running out of the box.
In you design, it needs to be constantly ON, so you can't do quickly swappable batteries.
Are you just going to regularly take the box out to charge it? Then that's another flaw by design, I could just wait until you have to charge it to inspect your room, and simply bypass all your bullshit.

>>1481942
Inductive charger

>>1481711
Not gonna help you store cp faggot

>>1481711
Interesting project OP. Personally I don't think you yourself would use this for something like this for CP. Keep us updated on your progress mate

>>1481987
>I don't think you yourself would use this for something like this for CP.

nobody goes thru this much trouble to hide something unless they are trying to avoid major prison time by hiding or possibly destroying evidence

>>1482096
This entire board is dedicated to things people spend too much of their free time doing simply because they enjoy doing it. OP has already said his motivation is the challenge, and the potential for financial gain. If child pornography is the first thing that comes into your head you're projecting lad

>>1482101

>financial gain

nobody is gonna want a "safe" that will destroy everything inside with thermite if you forget to charge it or use the wrong password... nobody would be able to sell a device like this legally due to "features" op wants to have built in.. its basically a terrorist device

Funny enough I toyed with the same idea to store drugs. Came across this: https://en.wikipedia.org/wiki/Harvey%27s_Resort_Hotel_bombing

enough sensors to make it trip from anything, as for igniting the thermite ignite magneisumm first and have that trip the thermite

>>1482110
You're post doesn't need a title mate, back to whatever DIY subreddit you normally post on

>>1482117
>You're post
>you are post

and you need to go back to school and learn proper grammar, fagatron

>>1481711
>valuable but expendable
That descriptor usually involves items that are both illegal and heinously vile, or a state secret. You're essentially trying to booby trap a safe that self-destructs in the event of intrusion. Forget about crack-proof. Everything can be opened with enough time and resources.

You'll probably want to rig a safe with thermite at the top that can burn its way down and ALL the way down.

Your customer pool would also be fairly small and high profile. It would probably be limited to politicians, (((religious leaders))), and various scumbags you probably shouldn't do business with. This customer pool here in the US is also shrinking rapidly as the Trump presidency is laying down some serious fire. There's blackmail everywhere.

put me down for 365 (one for every day)

How are you gonna protect against attacks against yourself?
i.e. someone wants to access the contents but knows it's self destructing so he either
a) observes you and attacks you while you're accessing it, or
b) threatens you with violence/torture to access the safe

well, OP is dumb and so is this thread. im out

>>1481808
>You're going to kill yourself or at least lose a limb
No argument there, but handgun primers and thermite are relatively harmless on their own.

>>1482162
silly anon, OP probably designed a device to make him self destruct if someone attacks him. the contents are safu

>>1481845
The more sensors the better, they could pressurise the outside too. Obvs the pressure should be different for every safe, but even then they could theoretically guess it by pure luck. Better safe (heh) than sorry.

>>1481946
Bad idea, insides should be wholly separated from the outside, preferably with Faraday cage too. Just put in multiple power packs and exchange one at a time.

>>1482127
******.ru

Putting aside the retardedness of the idea, realistically what is the usp?
If its porn, you encrypt it, everyone knows truecrypt has hidden volumes.
If its drugs you hide them in the toilet and flush it during a raid.
So how about that op, tie a string from bathroom door to toilet handle and store whatever in the toilet bowl.
Say it is paper drawings/plans, How about a microwave with a pir sensor? Few matches or something in with it to burn I don't know.
Point is if its booby trapped it doesn't need to be a big metal safe at all does it.
Reminds me of that guy that built the big bomb and wheeled it into a casino hotel, had a bank of switches in the front and the wrong combination would detonate. Well it must have been a good design because the fbi or whoever couldn't defuse it and it blew a fucking great hole in the hotel. Google it.

I think your biggest problem is going to be making sure whatever is inside is completely destroyed.
E.g. Have you tried burning a book? It's really fucking difficult because the cover turns to carbon which is a great insulator, the inner pages are then protected, just singed edges. You have to really stir and mix it to get it all burned.

>>1482162
Self-destruct password for the second one. First one is harder, but it should ideally be in a safe room, which should give you the two seconds needed to close the safe.

>>1482456
cont
I mean state/competition won't torture you for the hell of it, so you die as you would either way but without giving them a win. More questionable solution when it comes to regular robbers.

>>1482454

OP is trying to hide his massive cheese pizza collection. he probably made it himself and needs to hide it so there is no evidence for when his victims come forward to accuse him of it.

obviously he isnt going to admit to it and will keep making up other reasons to make such a dangerous and pointless safe.

nobody goes thru this much trouble for anything but cheese pizza because even tho you could murder someone, CP gets you more time in prison. OP is trying to avoid prison

>>1481723
Call it the "9/11 safe" and ill buy.

>>1482573
>thermite can't melt cheese pizza

>>1481733
The first thing I think of is illegal stuff, but sensitive or confidential documents need storing, too. You don't want someone to get their hands on that kind of stuff if you can help it.

But still anon stop hiding CP you freak

>>1481942
Like a UPS: runs and charges on grid, fails to battery.

>>1481711
>lock will be electronic, running on a Zilog Z80
>sensing subsystem will run on Rasp Pi

Why did you chose 1970's tech; Zilog Z80, and the raspberry pi is really a low tier embedded system, mostly for toys.

Wouldn't an industrial PLC be a better choice?
It could control the lock, and all your sensors as well as the fail-safe device.

As a welder and mechanical engineer you must know about the problems with brittleness and preheating requirements when welding D2 steel, also it's poor machinability.

You can't inductive charge if you harden it against an EMP blast. It will block the electromagnetic field set up by the charger.

A Glass Relocker is for drill attacks near the lock tumblers.

> the primer will ignite the thermite.
Not anywhere near hot enough to initiate the reaction, a magnesium ribbon is commonly used and lit by a gas torch.

What discipline is your degree in mechanical engineering? You don't show much knowledge in material science, or system integration.

You wouldn't have to emp proof it. Just design the circuit that engages the primer to fail triggered. When your power system fries, drop the pin.
>>1481743

>>1481734
>intellectual property
you would be surprised at how few real "trade secrets" there are.
Public "secrets", aka patents, form the majority of real intellectual property, and those who are interested in private intellectual property usually have something better than what you have in mind.

I guess you might find a handful of customers in upstart hipster breweries who are deluded into believing they're blazing a trail

OP has the original Coca Cola recipe.

You dirty minded individuals with your cheesy pizza assumptions sicken me.

>>1483354
>the original Coca Cola recipe
Everyone already knows that the only ingredient that mattered is cocaine.

>>1481711
What about earthquakes or heavy vehicles passing by. How do you stop them destroying your precious cocaine?

you want the crack to stay in or stay out?

>>1481711
Maybe I have a somewhat related question -

What is a good source for various sized electronics enclosures for small hobby projects?

most places seem to be expensive and not the greatest selection. Trying to think of a source for something that could be re purposed as an enclosure. sort of like the Altoids tin thing but need some that are larger than that.
would like to find some small alum. or other metal type boxes

>>1481764
>man caught doing XXXXXX
>sentenced to X years of prison
>paroled
> Last time I posted here my project made national news.
Sweet story

>>1481839
You're not immune to torture. Stop pretending somehow you or anyone else is.

>>1481773
What about that is supposed to be annoying?

>>1482454
Good post hitler

>>1483669
sheet metal and a small brake press
3d printer and enough plastic to fill your bumhole
nylon twine and a few drywall anchors to hang off your ceiling

it doesn't matter who cares

>>1483869
>none of this matters

>>1483800
the pointy nubs, when you insert in into you anus

>>1483869
>sheet metal and a small brake press
actually adding this to my list

>>1481767
Only thread i know of that made national news was the diy plastic invisibrace for teeth, pretty sure anon is british

>>1484594
Link?

>>1481716
lol exactly what I was thinking.

>>1481739
>the bank doesnt care what you put in it
Yeah.. that should keep LEA out

>>1481745
> This needs to burn without creating a ton of pressure.

You'll get charged up the ass under terrorism statutes if cops every need to break into this fucker. Also destroying evidence/obstruction charges. And if a fucking k-9 so much as burns it little nose on your super hot thermite box, expect to get assault charges, and all kinds of shit stacked on as well.

> Last time I posted here my project made national news.
post it

>>1482454
I can't think of a good application. anything that is data related ( eg: book ) could be scanned, encrypted, hidden far more securely. I mean, maybe if you had the necronomicon or someshit, and you needed it destroyed rather than falling into the wrong hands..

hey what does the state department use in their embassies?

>>1482548
or his "Trophies"

>>1483374
drugs are a terrible application. competitors will just chop off your feet to get you to open it up, and cops will charge you anyway for the pre-cooked weight that they estimate out their ass.


I'm gonna tell you a secret about how this shit goes down btw. They wait till you access it, then distract you - eg: flower guy rings the doorbell, toss a stun grenade in the window. One of your other libertarian friends is ATF. Another is an FBI informant.

Great way to burn down your house, you fucking retard.

>>1481711
So...you found a death note?

>>1481711
OP I'll get in your shit in 2 minutes with a concrete saw. Just saying. Uncrackable is impossible

>>1481711
It’s been done before, in the 30’s they designed a safe with a glass pain with lead wights on the top that when broke dead locked the safe. Also concrete with large amounts of fibre (house wrap shredded) is a preferred second layer dur to its insulating and burn resistance.

>>1487742
Read the bread or at least OP before posting.

>>1482458
have you... have you been living under a rock?
that is literally what some states do

>>1489921
>for the hell of it
Maybe some shitskin country, developed world countries only torture to gain intel