[routalot]

I hope no damage has been done by this method of finding the flexible areas of the machine.Were you able to see if the spindle was flexing in it's clamp?It would suggest that light cuts at high speed will be a good wy to go until you determine a permanent solution.

[sn4k3]

I hope no damage has been done by this method of finding the flexible areas of the machine.Were you able to see if the spindle was flexing in it's clamp?It would suggest that light cuts at high speed will be a good wy to go until you determine a permanent solution.

Motor stall under a high pressure threshold and prevent future damage if i keep going down, also as it flex a little there's no damage.
By my eye it seen that spindle didn't flex, as that's the smallest area on machine it's more robust than the base structure
The only way to fix is put horizontal steel bars under, supporting the bed and fixing the gap, but that seens impossible because granity pass there. Vertical bars however are possible, will not eliminate problem but will give more base, the problem is it need to be welded from bottom and the oil tank is weleded preventing the removal for manitence
Will start will light cuts at 0.4mm to see

[sn4k3]

Or making a grid of steel under bed like that: