This is my approach at the illusionist heart locket, as a gift for my girlfriend. Many have already made attempts at this, and you can find some here on instructables, and even more on Google, but this one is made completely by me, i have designed and made every single piece of it myself. Because i used whatever tools i had at hand, some features might not be the optimal choice, so feel free to alter the specifications and features as you please. 

I have seen some designs, that required very very tiny parts, that had to be extremely precisely made, but since i do not have access to neither laser cutters nor CNC machinery, i decided to make a simple design, that i would be able to make, without having to invest in additional tools or materials. I am pretty tight on my economy, so basically anything expensive was ruled out. I also set the criteria that the picture had to be centered, not on either half of the heart, which actually later lead to accidentally figuring out how to put 2 images in the locket. 

Again because of my limited selection of tools, i decided to not make this a necklace pendant, but a 5*10 cm box instead. This was the only way so far that i could get the dimension relations as a wanted, and still have a decent size picture in the middle. It is still small, and has a nice size, fits nicely in the hand, and after several steps in finishing it up, it ended up having a bold and soft surface that i am very satisfied with. 

I have uploaded this in the Valentine's Day contest, so if you like the project please vote for me :)

Step 1: 3D designing

I spent many many hours designing this locket in solidworks, a program that i legally use as part of my school. 
The locket consists of 4 primary layers, each with 2 slices, an axle, with 2 "sleeves" a custom made pin, and 18 tiny magnets, as seen in the picture (the magnets are not in the picture). Each of the 8 slices are different, and individually made. I have included some screenshots of my working drawings, but more on those later. The complete set of drawings that i used, is attached in a zip as .pdf, and they are all 1:1 if printed on A4 paper. 

To be able to keep track of the slides, i decided a way of numbering them, which also can be seen in one of the pictures. It is made so that when you view the locket from the front, the 4 upper layers are labeled 1.x, where x is 1-4, starting at 1 for the front layer. The lower 4 parts is the same, only 2.x instead of 1.x. This is very useful, when making the parts, to keep track of them, and make sure everything gets done right, and none two are mixed up.

I will try to explain how it works, but please take a close look at the pictures, they might help understand it. 
The pin, that has a orb at one end, and a corner at the other end, is the axle that the entire lower part turns about. The round end can turn freely inside the two middle layers 1.2 and 1.3, which are glued together, whereas the corner end cannot turn inside the layer, forcing the pin to turn around, together with the lower middle layers, 2.2 and 2.3. On the large circle in the middle of the pin, an image can be glued on either side, and thus in one position the first picture will show, and in the second position, the second picture. The magnets are there to secure the parts in the positions that we want. 

If the pictures i have attached is not enough to fully understand how it works, please let me know, and i will provide some more. 
<p>please upload some more images of geometry construction.....</p>
<p>how many slides to be drilled for axial? And how much centimeters thick?</p>
<p>hello? flecks.... hopefully you get this comment and you please respond... im a 14 year old guy who is in wood shop working on your project (i showed it to my teacher) i alredy printed out all your steps and my teacher is on my ass now that i better finish it.... but i cant print out your blue-prints.... i tryed everything but none of my computers (incluiding the school distric) dont have your software..... hope fully you can message me ---&gt; <a href="mailto:linares.jose25@yahoo.com" rel="nofollow">linares.jose25@yahoo.com</a> and send me a word ducument of these blue prints....i really need them asp. </p>
<p>Hello to you too. </p><p>The drawings i have uploaded is simple .pdf files, i cannot convert those to a word document. You can open and print them from any pdf reader, for example adobe reader. Please do post a picture, when you finish the project!</p>
I see! Thank you, I am trying to find one to buy for my gf after not being able to make one that i was happy with. What do you think of this one? https://www.etsy.com/listing/157512555/illusionist-heart-locket-made-from-maple
It looks nice, more like the one in the movie. However i don't like the idea of cutting the picture in half, seperating the two persons. <br> <br>But i guess i just as well might have...
Hi, I really like your design I just don't understand one thing. How does the other side of the lid stay connected? The magnets can't be so strong to were it won't &quot;break&quot; off if you pull on it. Thank you in advanced, your a genius <br>
I'm not sure exactly which lid you are talking about.? The two lower lids are held ind place by magnets and the axle, and the front upper lid only by magnets, but so well that you can shake it around without it falling off. The back upper lid is glued in place. <br>Thanks for the kind words :)
I would love to get the files to 3d print this. The only change a would like would be a disk (not a ring) for the picture(s) to be attached to.
Nice work. This is a tricky project to get right. <br>I 3D printed mine and cast it in pewter. <br>I always wanted to get it lasercut from wood and layer it up. <br>This has inspired me to try that again, but to fit my design I need to find some 0.8mm wood.
0.8mm..? That's... Veneer? I am very interested in that design, can you reveal more? <br> <br>Did you 3D print in plastic or wax? Because i have considered printing mine, but i am not sure which material to print it in..
I had it printed in plastic (shapeways wsf), then I made a mould using heat resistant silicone, and cast it lead free pewter. <br>Wax is the standard material to use for investment casting. But that only gives one shot and destroys the wax piece in the process. I've never cast metal before so wanted it in plastic, that way I could clean it up and try multiple things with it. the model is on thingiverse if you want to take a look. <br>http://www.thingiverse.com/thing:28755
Very nice indeed. How did you manage to cast the holes? Aren't those quite difficult to get an impression of, even with the silicone? <br> <br>And are there any function that prevents the picture from tearing?
Wow, featured and frontpage same day as i published, thank you whoever is in charge of this! :)

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Bio: A 23 year old engineering student and amateur jeweler. I spend a lot of time shooting on the national team, and making stuff in my ... More »
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