I love puzzle of evil thing. Especially, the beauty of its shape and the fact that it can be stored inside until the puzzle is solved are wonderful.

However, the disappointed point is that the hinge is too big and spoils a beautiful form. So I tried to make the hinge thinner. And you will get a fully working hinge due to the conical internal structure. It also solves the problem that when it is closed, it does not close completely and opens a little.

I made six kinds of files with the magnet size and the gap of hinge.
-evil puzzle remix_mag3x2_gap02.stl.. original magnet size and hinge gap=0.2mm
-evil puzzle remix_mag3x2_gap03.stl.. original magnet size and hinge gap=0.3mm
-evil puzzle remix_mag3x2_gap04.stl...original magnet size and hinge gap=0.4mm
-evil puzzle remix_mag5x3_gap02.stl...bigger magnet size and hinge gap=0..2mm
-evil puzzle remix_mag5x3_gap03.stl...bigger magnet size and hinge gap=0..3mm
-evil puzzle remix_mag5x3_gap04.stl...bigger magnet size and hinge gap=0..4mm

For the bigger magnet size, even one pair of magnets works well, so only one pair of holes is enlarged.

[recommended]
It is recommended to print "gap_test.stl" before printing this pazzle to find the proper gap size for the hinge.

== I've created a second remix version that's much better, and I recommend it. ==
https://www.thingiverse.com/thing:4842626

[revisions]
2020/06/11
-In order to increase the strength of the hinge, the hinge was thickened from 4 mm to 5 mm in diameter.
-Three hinge gap sizes are available.
-I have prepared a test file so that you can easily find the appropriate hinge gap size.