I added a Negative Part by right clicking the model and choosing a cylinder. I set the size to 90mm by .5mm and moved it under the wrist where it contact the bed. This forces the slicer to fill that area with the next closest layers or else your model would be floating. Then I had to fix the ring finger missing the staples so I created a new part(6 actually) as a cylinder 6mm by 2mm and placed them embedded into the finger just like real surgical staples. You will want to increase the number of Bottom Shell Layers to at least 6 and maybe even make the Bottom Shell thickness 1mm.