A Tricksy Puzzle

This is my modelling of a puzzle by Goh Pit Khiam called "Square Fit".

The task is simple - simply place all of the puzzle pieces into the 7x7 grid.

The folding clamshell puzzle can happily hold all seven of the pieces even if you've not managed to complete the puzzle, so is perfect to pop in your pocket, bag or keep on your desk.

I have included two versions of the lid/tray:

• One with 3x2mm recesses for a small magnet (https://www.aliexpress.com/item/32784908257.html or similar)
• One without recesses.

[UPDATE: 20/12/19 Replaced Piece E with correct .stl as original had the part accidentally split in two]

Printing instructions/advice:

Each part can be printed in one piece, without the need for supports.
Print at high quality (0.12 worked best for me) for the best accuracy and overall look.

To complete the hinge, simply cut a 7cm length of filament and insert into the hinge.
Then place a hinge pin in each end for a neat and tidy look.

Print:
1x Tricksy Puzzle Lid (Print with a brim to prevent warping at corners)
1x Tricksy Puzzle Tray (Print with a brim to prevent warping at corners)
1x Tricksy Puzzle A
1x Tricksy Puzzle B
1x Tricksy Puzzle C
1x Tricksy Puzzle D
1x Tricksy Puzzle E
1x Tricksy Puzzle F
1x Tricksy Puzzle G

5x Tricksy Puzzle Tray Pin (Print with a brim for adhesion)

You only require two, pins, however, printing a few more allows layers to cool sufficiently/means you have spares for when you drop one whilst assembling...

If you find your hinge pin too loose as every printer varies slightly, you can experiment with scaling it up slightly.

If using magnets, they should be a tight press-fit into the recesses.