for using a router I do it the same way plus what the chips look like, if it's dust speed is to fast or feed is to fast, for most wood types other than a hardwood it's all about the same just depth and feed needs changed by a %.
hardwoods I just go a bit slower and not as deep 25% less in feed and depth of cut.
in MDF 75% depth of cut, 75% to 100% width of cut at 21000 rpm 1250mm/min works good in V carve pro with a 1/2 inch, 1/4 is 50% depth 75% to 100% width of cut at 21000 rpm
MDF cutting with a file done in fusion 360 by mistake I have done 150% depth of cut 100% width, it was fine with a HSM tool path
Interesti
ng numbers DanL, my feeds and speeds are around 30-45 ipm @ 18K-20K RPM which are remarkabl
y close to yours. I usually peck drill at 8K - 10K RPM. I have not yet cut plastic but when I do, I'll be back asking for advice on bit types, plastic types and cutting parameter
s.
Mark