Mineral grain holder for dissection

Model for my PhD work.

Holds a single mineral grain, in our cases an apatite, for use with a Struers Acutom cut-off machine. The grains are inserted into the variable sized mineral slots (white) then slid into the main body (red). An Acutom with diamond blade can then be plunged into the holder. 

Uploaded inserts are of variable sizes. Inserts should be printed without walls, base, or top in TPU at variable infills to achieve a squishy material. I used gyroid infill.