Anyone have recommendations on what types of bits they use to engrave acrylic?

Anyone have recommendations on what types of bits they use to engrave acrylic? Also feeds and speeds for those bits. I am needing a small point. Right now I am playing with some 30 degree with a 0.005 tip but am having issues with not cleaning out some of it. Looks like it is melting part back to it.

I used a ball nose that was a .125 inch. I think I had it set at 8,000 rpms at 100 inches per min. I told vcarve it was an engraveing bit at a .02 pressure.

@Edward_Bigham great looking product, rare to see a Yanmar outside a boat down here.
@Jamie_Wilson I do it with a ball nose too. 2mm on aluminum 700mm/m .075mm DOC. 5mm/m dive.

@Brandon_Satterfield that was my firsttractor. My big tractor is an Allis Chalmers. It’s a 1968 one seventy. Older than me.

@Edward_Bigham That looks great!

@Colin_Kaminski thank you sir. I try my best. I just love experimenting with the r7.

Thanks