The hollow function hollows out your model by inserting an offset on the inside. This will allows you to print shells and save lots of material. (Most resin printers don’t handle illuminating larges cross sections well). With the thickness parameter you determine the wall thickness. The thinner the wall, the faster the calculation. The accuracy parameter again controls the sampling grid. If your accuracy is low the calculation goes faster. Please note that if your accuracy is to low you might lose detail.
Optionally you can reduce the generated mesh to save memory and computation time further on. Please note; a too high level or reduction might lead to new intersections of surfaces with the original mesh. (i.e. cutting corners).
To see the result of your hollow operation you can leave the checkbox ‘switch to transparent viewmode’ checked.