These are lids / bottoms for the resin vat from a Wanhao Duplicator 7. There is a simple rectangle which can be a bottom or a top for the original vat. There is a flared bottom that will fit either the classic vat or the new FEPVAT. Finally there is a lid customized to fit the FEPFAT beta. The lids are NOT intended to be fluid proof but will help in the case of sloshing!
I use a big nozzle on things like this...as in .6 to .8mm with a layer height of 300 to 400 microns.
Would also recommend using a moe flexible material than PLA. I use ColorFabb ngen but PTE or any of the copolymers will work. This is especially important for the FEPVAT lid as it needs to bend the most. I can't speak about ABS as I do not like it and do not print using it!