3d parallel toolpath fusion - tools and settings

Mostly Printed CNC - MPCNC Advice
1

Looking for suggestions on settings/tools for 3d parallel tool paths.

Here’s what I was cutting, face and adaptive clearing were 1/8 flat endmill. .5 mm stock left, parallel was a 2mm ball mill, 1mm stepover, with perpindicular pass:

IMG_20200902_183632206
IMG_20200902_1836322062304×1728 1.47 MB

Here’s result I got, pretty good, wondering how good it can get though:

IMG_20200902_184121071
IMG_20200902_1841210712592×3456 226 KB

Thinking of trying again w/ an engraving bit for the parallel toolpath and/or trying w/ a smaller stepover and/or a slower feed rate? You can easily feel the ridges in both directions, not sure what to expect really, the top of the small cylinders are 8.5mm in cad and they are < .1 of that. Wood is cherry btw.

Thoughts?

2

I’m not hugely experienced, but I’ve seen a recommendation in several placed by different people to use a stepover of 10% of the bit width for a parallel pass using a ball endmill. So for a 1/8" bit, I typically use .3mm.