Yeah, the Workbee is pretty typical of extruded al hobby routers. However, the biggest deflection comes from the cutting forces in any of the 3 axes, not the static weight of the router/spindle. Still, I hang a DW611 on mine and would not feel comfortable with anything heavier. I take pretty light cuts with mine as it is.You might check with their tech support and see what they say about the weight their CNC should be able to handle.
If it is too heavy it will twist the beam of the gantry when cutting especialy along the Y-axis and cause bad cuts. It just looks a little light to me.
No arcs! That's a pretty low bar. They'd be better off with GRBL.Looks like someone decided to write a new control software to work with all the Chinese Mach3 controllers, for a lot less money than Mach3.
I think that a lot of these Chinese controllers use the same firmware, as they are all basically copies of each other.
While it's much cheaper than Mach3, it appears to have a lot fewer features. It doesn't appear to support g-code arcs (G2, G3).
I always advise against using any Chinese controllers with Mach3, as none of them work 100% correctly.
If the limited features work for you then this may be OK. But I prefer non Chinese hardware, and well supported software like UCCNC.