I've edited the tray from Alex Howser, so that its easier to print (due to missing hexagons). I also made the tolerances smaller (0.05mm) due to being too lose on the model from Alex Howser. As a nice addition I've added roundes of edges.
Keep in mind the dimensions are also changed (length 250mm and depth 135mm)
It's easily printable on a bambulab p1p with that tolerance
The source can be seen here and edited:
Keep in mind, that due to the missing hexagons there is a potential risk of mold developing, due to being sealed. It's best to have a small gap or being faced against a inside wall. I can't take responsibility for any damages
The author remixed this model.