A brand new machine build. 2x4 size or something in that region. :)

[IN-WondeR]

There's very little vibration in it. Especially after I added the 41mm MDF top to it. 22+19mm MDF.
Plus I added extra stiffness on the crossmembers with 60x60x4mm steel tube.

I have done a cut test in Aluminum, with a rather agressive cutting parameter, and it came out lke this, with a single flute cutter. You need to look at the area within the red rectangle.
The cut was done rather agressively, and with a 3mm single flute cutter at high RPM. Will go for a slower RPM next time I try it. It looks bad looking at the picture, but the cut is actually very flat and smooth.

[EddyCurrent]

I once looked deeply into making loudspeaker cabinets (big ones) and it was deemed a good idea to use a glued sandwich of MDF and plywood to reduce cabinet resonance.

[IN-WondeR]

Laminating sheets is always a good thing, it does remove alot of resonanse and vibrations all together... I had hopes to find another 40mm bottom sheet this time, but sadly I did not find one for cheap this time around.
But the overall look of the machine and the precision is more than ok for my uses. Which mainly will be woods and plastics, and perhaps a bit of aluminum.