Hi
I am trying to design a fixed column desktop machine. Goal is 400 mm(X) x 300 mm(Y) table to the smallest footprint. It is not about 650 mm(X) x 600 mm(Y).
For these machines the Z is limited so I do not want to design the spindle collet to go too close to the table.

So my question is.
How close to the table does the collet nut have to go? Right now I have 20 mm.
It of course depends on the tool and what is to be cut. But lets say you want to cut 3 mm aluminum plate with 3 mm tool? How long is a normal good stick out? I can see that some tools are 50 mm long and have cutting of ~12 mm. I have no idea how much tool will fit into a 2,2 kW Chinese spindle.