This is a case designed to hold one watch using the Gridfinity system.

I recommend using one of my remixed 1x2 Gridfinity Watch Holders, which is linked below.

https://makerworld.com/en/models/469735#profileId-379169

With the TPU liner installed, this watch case is approximately 46.5mm in width, where the crown of a watch would typically sit (though it widens out by a couple mm if the holder is flipped so the watch faces rearwards. Without the TPU liner, the width is approx. 49.4-51mm. If the TPU liner is not used, the inside of the lid could be lined with felt to protect the watch. If you have a rather large watch, then the three watch case (below) may be a better fit (which is about 45.9mm for the center, and 46.8mm for the outside slots).

The photo of the case is credit to JGowins over at Printables who helped me out by test printing this for me.  I did not test print this design, but I have tested the prior version, which shares many design elements and dimensions.  I have also tested the similar three watch version shown below.  So I'm confident that there should be no problems with this model and the test print of this design (which you can see over on Printables was good).  However if you see a problem, let me know, and I will try to fix it.  Big thanks to JGowins over at Printables for taking the chance on testing this out for me.  IJGowins  strongly suggested to run the print in PETG with 50% infill.  At a minimum, I suggest running the latch and label parts in PETG, using 50-100% infill on those parts for added strength. 

I have also a similar three watch version shown below, if you need a case for three watches:

Although this is designed as a 12U case, it will not fit bins, due to the way the lid is designed. It is specifically designed as a watch case. Although there is only a gasket version, it will also work without a TPU gasket. The gasket will not make it water tight, since there are too many factors that go into a water tight print and gasket. More flexible TPU may help with sealing, however I only have shore 95A to test with (which is on the hard side for TPU). If you have any suggestions on how to make a more water resistant gasket, please let me know.

Additionally, this watch case may look rugged, but please do not put your watch in it, and expect that it will keep it safe if it's rolled around. The TPU liner in the lid helps to stabilize the watch holder, and may help protect the watch, but without the liner, expect that the watch will be able to move side to side.

Assembly and Materials:

There is a build guide on my blog with some tips on assembly. The instructions are for a similar case with more features, but it shows how to assemble the latches and hinges.

This case requires the following hardware:

(1) M3 x 12mm SHCS (these hold the latch “cleats” to the top of the case)
(1) M3 x 20mm SHCS (for the latch)
(2) M3 x 20mm SHCS (for the hinge)
(1) M3 x 30mm SHCS (for the latch)
(8) 6x2mm Cylinder Magnets (optional but recommended)
(SHCS = Socket Head Cap Screws)

Printing Info:

I have included a 3MF with the files set up on plates, which should help with printing.

PLA can be used for the boxes, but PETG is recommended for the latches. The gasket and lid inset should be run in TPU (though it will still close without a gasket as well). A 3MF 5 plate profile is included. It uses the following settings:

• PLA for most parts, but PETG for the latches and TPU for the gasket and lid insert
• 0.4mm X1 Carbon profile
• 3 Walls
• Adaptive Layer Height (smooth)
• Arachne wall generator
• inner/outer/inner for the wall ordering
• 15% Rectilinear infill, with infill combination enabled
• Textured PEI build plate

AMS is not required, but here is how it is set up in the profile:

1 = PETG- Esun Solid Orange
2 = PLA - Duramic White
3 = PLA - Polymaker Galaxy Blue Polylite
4 = PLA - Duramic Gray
5 = TPU - Overture White, with shore 95A (this is the non-AMS spool on the back)

There is a blank label included. You can add your own text to this label using the text tool in the slicer. There is also a label designed to be used with 12mm Brother P-Touch (or similar) labels.

Tips and Other Stuff:

TPU can stick very well to bare textured PEI, and become difficult to remove. Therefore I recommend that you test that your printer can run TPU without issues first. Although the 3MF is set up for a textured PEI plate, please use a smooth or the Bambu Engineering plate if possible for the TPU gasket, and apply glue as a release agent.

To install the gasket, I used the cap of a sharpie to press the TPU gasket into place. The gasket has grooves on top, so make sure to verify the position before installing it Start by pressing in the middle of the gasket along all 4 sides, then once it's set in position, press in the corners.

I included some optional cleats, which slide into the back of the case and could be used to help secure it. I would not recommend hanging the case from a wall though, but that may be possible. There is a plain version of the cleat, and one with holes for #8 wood screws.

Other stuff:

If you need some bins for small parts, the following bins with covers are a good option to use with the Box For Stuff 20 bin and 25 bin cases (or other 6U tall cases):

1. 1 compartment 2x1 (3U, 6U, 9U) bin with a magnet pickup tool
2. 1x1, 1x2 (3 Compartment) and 1x4 (6Compartment) bins with lids (6U) - version 2.1
3. 1x2, 1x3, 1x4 (6U, 9U and 12U) Lidded Bin for Stuff with Latch Version 2.0
4. 2x2, 2x3, 2x4 (6U, 9U and 12U) Lidded Bin for Stuff with Latch Version 2.0
5. 3x3, 3x4 (6U, 9U and 12U) Lidded Bin for Stuff with Latch Version 2.0
6. 4x4, 4x5 (6U, 9U and 12U) Lidded Bin for Stuff with Latch Version 2.0

If you want to check out my other Gridfinity cases, you can find them at the links below:

1. Gridfinity Box For Stuff 20 bin (6U)
2. Gridfinity Box For Stuff 25 bin (6U) (max size for a Bambu X1C/P1S)
3. Gridfinity Box For Stuff 16 bin (6U) (Ender 3 size)
4. Gridfinity Box For Stuff 16 bin - 12U deep version (Ender 3 size)
5. Gridfinity Box For Stuff 2 bin (6U) (small test version)

Additionally, there are some alternate latch parts which may help if you do not have the M3x30mm screws or have difficulty installing the latch “cleat”.

If you find these models useful, please post a like or a comment with some pics of your prints.

You can find the other things I'm working on at my blog here. You can also follow me here or on Printables to see what new stuff I post. If you would like to support my work, you can Buy Me A Coffee using this link:

https://www.buymeacoffee.com/mystoopidstuff

Thanks for looking!