Mortar and pestle for pills

I need to crush three pills every morning and designed this pair for the job. Three fairly small pills which I do in one go.
Designed in MOI.
Made on a Robox in Robox ABS. (As you can see I've not yet mastered the art of a good surface finish).
Although I've made these in ABS I recommend using PLA as it is a harder material and, I think, more suitable for this application.
Having used this for a while I have some recommendations on how to best use it:

1. Press down hard to break the pills into smaller pieces.
2. Then while rocking the pestle forwards and backwards, rotate the mortar.
   Works surprisingly effectively - or so it seems to me!

After some weeks using this I concluded that the pestle could be a little taller and that more clearance between the sides of the mortar and the pestle would give more room for the 'pill powder'. The updated design is pestle 01.stl.