Daewoo D500S and Balter food dehydrator modular walls for filament drying

I recently bought my first spool of TPU (Creality brand) and it was extremely moist, right out of the box - its specs say that it can be printed at 210 - 240C and it was literally sizzling at 230C.

I found a barely used Daewoo D500S food dehydrator online with a very good price, but as it has a sort of rounded rectangular shape, I couldn't find any suitable food dehydrator extension walls that would have fit on it, but I didn't want to cut the trays as I still want to use the machine to dehydrate food as well.

As such, I measured the radius of all corners and sides (all four sides are a bit rounded), the length of the sides, and made this model, shaped after the form of the dehydrator's trays - I am EXTREMELY new to 3D modeling and it shows on the model, but it works perfectly.

The walls have a 3mm average thickness, they are 100mm tall and stackable to allow for drying multiple spools at once.

The overall internal measurements of the extension wall are the following:

Wider side (bottom portion - this slides over the edge of the dehydrator): 318 x 298 mm

Tighter side (top portion - this is the part over which the next level of wall/tray/lid fits): 314 x 294 mm

Corner radius: 64,6

Length radius: 391.5

Width radius: 320.7

As the model is quite big, I cut it up in four interlocking pieces using the piece in the splitter.stl file (then tinkered a bit with them in Meshmixer and 3D builder to thicken walls and bridge some gaps created by the very amateur splitting I did); besides the already split model I included a full, already split and an unsplit model.

Each wall took approx. 8 hours to print with 0.2 layer height (0.4 nozzle), 2 perimeters and 15% infill - printed them in PETG with no supports and a 3mm brim, on painter's tape on an Ender3 V2.

After the walls were done printing, I printed this belt in TPU and this buckle in PETG to neatly hold the four walls together (they are interlocking, but don't stay together very firmly) - this can be done also with a piece of string, but I wanted to experiment with TPU :)

Hope this will be useful for someone :)

Later edit: it seems that the walls fit the Balter Seco and the Balter Seco LCD dehydrators as well :).