I redid my kitchen and installed a new 60/40 SS sink. Could not find an inexpensive in-sink dish strainer that would fit (Manufacturer unit was $80), so I designed and printed one. Although I printed this version on my Prusa XL, you have multiple options.

This stl can be scaled to fit YOUR sink.

What you see here was printed on Prusa XL.
Final size was (342mm X 240mm X 90mm) or (13.46" X 9.44" X 3.5")

If re-scaled, be sure to check the final size in slicer using ruler measurement tool. Don't want to waste a print....

PLA is not recommended if it will be exposed to hot water as it will have a tendency to warp.

I used PETG and has worked well for past year. Recommend printing with any of the higher temp filaments.