Puzzle Box

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Project by trexco posted 09-24-2012 01:35 AM 6869 views 8 times favorited 8 comments Add to Favorites Watch

I made this box for a friend at work that is leaving. It is made from an idea that I saw on the internet. The box is made from purple heart with wenge tirm. There are eight blocks that slide left or right (and maybe a fake that needs to stay centered). When all the blocks are in the correct configuration the pins on the top are released and the top lifts off. if any one pin is not correctly set the top is locked and can not be removed. The blocks can be removed with the top off and reordered to change the combination as desired.

-- Nothing to it, but to do it ...

8 comments so far

View Gary's profile


9400 posts in 3910 days

#1 posted 09-24-2012 01:51 AM

That’s really cool. Where did you get the plan?

-- Gary, DeKalb Texas only 4 miles from the mill

View trexco's profile


7 posts in 2555 days

#2 posted 09-24-2012 02:05 AM

I made my own plans, but here is the web site where I got the idea. It does have a pdf that you can down load.

-- Nothing to it, but to do it ...

View longgone's profile


5688 posts in 3785 days

#3 posted 09-24-2012 02:56 AM

Very clever and unusual. The purpleheart sure has a deep rich color

View kody's profile


180 posts in 2755 days

#4 posted 09-24-2012 03:46 AM

Nice… I like it.

View gfadvm's profile


14940 posts in 3167 days

#5 posted 09-25-2012 01:37 AM

“Made your own plans”. Wow, I’m very impressed! Things like this just baffle me. You did a great job using some beautiful wood.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View MolokMot's profile


122 posts in 2804 days

#6 posted 09-25-2012 02:33 PM

I checked out the other link and I am still not 100% sure I understand the concept. Perhaps I will just have to build one to figure it out!

Very nice box, and a great idea!

-- MolokMot, Rocker, Woodworker, Geek

View trexco's profile


7 posts in 2555 days

#7 posted 09-25-2012 03:59 PM

Hi MolokMot, I had to look at it a while before I understood it. Once you do it is really very simple. The top has multiple pins that point out towards the ends. The lock blocks have two cuts on them one that is offset to the left or right of center by five sixteenths. This is the ‘vertical slot’ and is just slightly wider than the pin. The second and wider slot is on the bottom of the lock and extends from the first slot past the center of the key by a little over an eighth of an inch ( I am using quarter inch diameter pins). My keys are half inch by half inch so all cuts are one quarter inch deep. The keys are placed in the box with the smaller cut vertical and the larger cut on the bottom. To align the keys so the top will drop in you must slide the key either left or right of center to make all of the vertical slots align to allow the pins in the top to pass all the way down. Once the top is in place pushing the key back to center traps the pin under the little ‘shelf’ of material that is left by the large cut on the bottom. To open you reverse the process and push the keys back to their offset positions so that the vertical shaft in the blocks line up to make a clear path for the pins to slide through as you lift the lid. -HTH-

-- Nothing to it, but to do it ...

View puzzlerhan's profile


2 posts in 2509 days

#8 posted 11-01-2012 05:59 PM

Hi, I am the designer of this box and the instructable. I am very happy to see than someone made a real artwork example of this box. Purple heart looks very nice. I was made this box from African olive.
You can see my box from here,
I have also other puzzle box designs, you can find free their plans from my blog and download PDF files with explications and drawings.

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