Most difficult 3D carve to date

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Mike,

@Hobbyist

This carve is on 1.75 inch blank cherry.
Do most users use a dust boot on thick carves?
I am but it doesn’t go low enough and the roughing pass made a bit of a mess.

I would never mill wood without dust extraction, as the ball screws are not sealed with bellows covers on the Onefinity and oiled mechanics are not compatible with wood dust. I assume you use the Onefinity’s dust boot attachment arms, which is a system which does not go up and down with the spindle, but is adjusted to a fixed height prior to job run. I think you mean you can not fix it low enough. Have you thought of dust boots that attach to the spindle and that go up and down with it? Like the PwnCNC v7?

See also What is the best dust boot for the Onefinity.

@Hobbyist

Is it better to use a flat end mill or ballnose for roughing (I used a 1/4 ballnose, but it is getting dull and left burn marks at every direction change, and a lot of fuzzies.)

For roughing I would use a roughing bit, as shown here and here.

A ball nose can be used for finishing, however you need time for finishing this way, but on hardwoods, you can get a nearly polished finish that needs no or very few sanding. See this video

@Hobbyist

Also my monitor is mounted on the same table and it appears that the vibration causes the monitor to go blank (it always comes back but is annoying).

This rather sounds like the frequently reported EMI-caused monitor intermittent issue. This is usually solved by getting ferrite cores, or it can be caused by spindle cables that are not shielded or a machine that is not properly grounded and bonded, or by using a VFD that is not mounted inside a control cabinet.