Here we have another Puzzle, again not my idea, this time in the form of a Puzzle Box, the idea with this puzzle box is that you open it from the closed position and place something inside the box, then you close the box, then open it again and what was there has disappeared magically.

What it is is actually happening is this, it's an outer case with a main drawer slider with no back in it and then another sliding box albeit smaller within that, to make the puzzle work there is a hole at the bottom of the main outer case, the main slider box has a cut out slot and the inner slider has a hole, so when you open the box, you are putting something in the inner sliding box, when you close the box you then place your finger in the hole and the inner box stays within with main case, the contents stay inside allowing the main sliding box to be opened and it's empty, easy once you know the solution, but a nice little trick to the unsuspecting.

One thing to note is that on the 3.mf model all 4 components are on the print bed, don't print like this, Print the main case and the inner slider and knob first as in the print preview image then print the main slider with support.

Thanks for looking.