This is a re-upload of a model I uploaded as my first model back in 2018 i may re-design it now as it has become semi-popular and has been copied but honestly the first one I made still works great and is quite seamless in terms of “hiding the magic”. 

the major difference is now with how easy it is to make multi-colour prints on AMS machines i have uploaded the original press-together gimmick for those who don't have an AMS and a version that has the gimmick in one piece painted in slicer to create the effect. The original description from 2018 is below.

"My first attempt at making a model, it is a copy of a trick I had when I was quite young. it is old enough these days that it doesn't matter if the secret is out but complex enough that it was a challenge for me to recreate it as my first step into Fusion.

it is also a great trick for anyone new to magic as it teaches a few very key principals

I have made the model so that the shell can click into the ring to make the gimmick work so that you can make the shell and the ball out of a different colour filament so you have contrast.

I printed it on my Anycubic i3 I will put the settings I used but I'm brand new to all of this so I'm sure others will know what to do with it much better than I do, hope you enjoy."