Advice on toolholders

[Rabs]

Questions,
In Fig 2 what is the diameter to the thing spindle part, the bit that holds the pulley.
What is the biggest tool you would be satisfied using ? Be reasonable here.

Any pictures as opposed to blocky diagrams.

Here you go. The spindle block is enclosed, with all bearings and pulleys concealed. At the top there is only an 18mm diameter shaft protruding. Ignore the bit of aluminium extrusion, it's just a temporary mount for a spindle speed sensor.


At the nose the spindle is 40mm in diameter


Here is the easychange chuck. To secure it you push a bolt from below, through the hole in the narrow end of the chuck and into a thread on the spindle. (see original post)


Here is one of the easychange toolholders:


And here's what the setup looks like as I received it:


Here is a tooholder I've knocked up with a stud at the top and how it looks screwed directly into the spindle. I've not used this yet on the back of m_c's warning.

I've made it with drive slots to fit the easychgange chuck but these could also be used for a spanner to release it from the spindle, with a normal spanner used on the flats at the top of the spindle.