While I’m one of the C3D guys, I’m not involved in product development, but a 4th axis seems unlikely in the near future:
- it pretty much requires electronics to support the 4th axis — I don’t think the nifty accessory connector has such an option
- it would require an enclosure rated for the impact of a long piece of stock coming free and getting thrown by the spindle running at full tilt which would be an expensive thing to put together and ship
That said, we used to have an FAQ noting we don’t support a 4th axis, but it’s not at:
anymore…
That said, what sort of work do you want a 4th axis for? There are alternatives — two-sided cuts, even a 4-sided flip frame prototype:
That said, if you just want to mark things in the round, a rotary axis for a laser is a popular accessory and seems to work well.