This one is even less remarkable, but it does show the (two legged) spider handle on the Arboga slid out of the way, as mentioned in my last post. I know, spiders are supposed to have eight legs, or at least three, to be statically determinate.
This was just another kludge to fill in for the absence of the bigger lathe. Instead of turning a round-bottomed groove, I milled it with a ballnose cutter.
This sort of approach has obvious benefits when a piece can't swing in your lathe or is too lopsided to balance- or when it can't be held securely enough to withstand the centrifugal forces.
What's more the cutting forces tend to be less with milling than with turning as they're shared among multiple cutting edges.
The other two things which might be worth noting: there's a misconception afloat among Arboga owners that the head only tilts 45 degrees each way. Sure the graduations only go to 45, but the head is happy at 90. This may be true of some other mills or mill-drills.
Secondly, the temporary 'backplate' shown on the chuck is medium density fine-grained fibreboard (known locally as customwood). It was originally intended as the top of a three legged stool, but if failed final QA.
If it's kept dry I've found this material to be OK for light use in machining setups. Certainly it's quick and cheap.