It was a lot of fun to just mess around.
I used a single flute upcut 3mm.
I started at 20mms then tried 22.5mms and it didn’t seem to help much. For the first bit it was throwing nice swarf for sure. Then it was molten balls of plastic.
I was going to use two pieces of acrylic stacked together for the lr3 xy and xz plates for the lr3 but it’s quite flexible so I think I will stop at the lumber yard and get some mdf.
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Everyone, chant with me: When in doubt trochoidal, when in doubt trochoidal, when in doubt trochoidal… 
I have to do acryllic where I have to do some holes, I am nervous about that… 
Troichoidal
Troichoidal
Haha haven’t even attempted that.
So a mid job ice cube dip is bad lol man I think of the silliest things sometimes.
And yeah I tried using the “drill” in estlecam and it didn’t like it with the end mill much.
The first little cut I did worked very well
The larger one not so much.
I actually have drill bits that I bought because holes start smoking otherwise.