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Safe Box

by blincoln, published

Safe Box by blincoln Mar 20, 2013

Featured Thing!

Description

A small and handy safe box with a built in combination lock. The whole box prints preassembled (inspired by emmett) including hinges, the only thing to add are the combination lock dials and rods which easily slide into position.

Two hexadecimal dials ensure a completely safe solution with 256 different possible keys (that is about as safe as WEP). Choose your own favourite key!

Recent Comments

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what is the code to unlock it?

Brilliant! If I printed it again I'd add a groove on one of the halves and an inverse on the other so the two halves lock together and don't slide side to side.

Do you think you can make another like this, but in the shape of a folded wallet? Basically a wallet sized safe.

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Instructions

Print at fine resolution. Carefully push the two box halves to close the box until the hinge breaks free of any stuck plastic and moves freely.

Print two dials and two rods and place one dial on each rod. The flat surface on the rod closest to the dial defines the lock open position - choose this to match your favourite code. There is actually a small 16-facet part of the rod (yes, very close to completely round) and this is where the dial should be (the inside of which is also 16-facet).

Do not forget the correct key. It will probably take you up to 60 seconds to retrieve it otherwise.

Comments

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crn13 on Mar 27, 2014 said:

what is the code to unlock it?

davidlawson on Mar 10, 2014 said:

Brilliant! If I printed it again I'd add a groove on one of the halves and an inverse on the other so the two halves lock together and don't slide side to side.

GameProps on Aug 16, 2013 said:

Do you think you can make another like this, but in the shape of a folded wallet? Basically a wallet sized safe.

Markusking on May 4, 2013 said:

will this work with 75 scale and 0,2 layers? lock 0,1

blincoln on May 4, 2013 said:

The hinges will likely stick and break when you try to move them if you scale it down, since it prints preassembled. But give it a try!

Greasetattoo on May 3, 2013 said:

Perfect!
What did you design it in?

blincoln on May 3, 2013 said:

It was designed in ViaCAD 2D/3D which is very good value for money. It is a budget version of SharkFX so the file formats are interchangeable.

GregFisk25 on May 3, 2013 said:

Looks awesome. Going to make one tomorrow.
This would be a great thing for 'customiser'!

blincoln on May 3, 2013 said:

I agree, I am just not friends with OpenSCAD yet! Still hoping for a better scripting 3D cad alternative to appear, perhaps FreeCAD will make it some day?

SCaruthers on May 3, 2013 said:

This was one of the first things I made on our printer. Highlighting the numbers on the dials (i.e. by rolling on a stamp pad or with a Sharpie) makes the digits really stand out and look sharp.

blincoln on May 3, 2013 said:

Good tip! I have tried various filaments for the dials but it is hard to get good contrast in the numbers with single color.

makerjeff on May 2, 2013 said:

So awesome!

LeftAngle on May 2, 2013 said:

VERY nice. Great work blincoln.

Pink_Iguanas on May 2, 2013 said:

awesome i LOVE it

sneakypoo on Apr 8, 2013 said:

Sweet. This will be the boxes I use for christmas next year when I give the traditional wad of cash to my nephews. I might re-draw it and add another dial or... five to mess with them though :D

whateverijustwanttocomment on Mar 22, 2013 said:

Just so you're aware 256 bit WEP connections use a key that is 58 digits long. That's a whole Hell of a lot more than 256 possible combinations.

blincoln on Mar 22, 2013 said:

Cracking WEP takes about 60 seconds (even at 104 bit key length) - that is similar to the time to crack the code of this 8-bit box :-)

It would be interesting to try to get more dials into an as small box as possible to extend the key length. Hmm - with dials on all four sides of this box you would effective need to open three of the sides to open the box. That makes 6 effective dials and therefore 4x6 = 24 bit = 16.8 Million combinations.

Too bad it would only take a hammer to open it using an alternative method...

Yatagarasu0612 on Mar 20, 2013 said:

Could you post the small box as a "stl" file so I could format it in makerware myself, would be a huge help.

blincoln on Mar 21, 2013 said:

This is just the naming of the ViaCAD file - this is the small box in the stls. There used to be a bigger box with three dials on my drawing board but that did simply not add anything to the concept so I shrunk it.

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