Gridfinity Spice Shelf 7x7

## Details
This is a large, 3-rack Gridfinity spice shelf. Its base is 7x7 standard Gridfinity tiles.
Due to its large size, I recommend printing it in four pieces rather than as a whole (see files).

I recommend using a low infill setting to speed up printing. No supports are necessary if you print this from its base.

## Files
1. The `whole` file is the entire model if you have a printer large enough.
2. There are files for each corner of the print (4 total) for printing this in pieces (recommended).
3. The `fusion_360_source` file can be used for editing this model in Fusion 360.