Spindle design ?

Hi all,

I lost the spindle on my T-Tech PCB and they want $500.00 for a new
motor, and another $500 for the spindle/bearing assembley.

the motor appears to be a custom thing, and unfortunaltly, one of the
magnets let lose and shattered.

So, I am in need of a new spindle.

I purchased a CNConabudget spindle, but am not happy with the
precision. The T-Tech can cut 0.005" lines, but this is cutting lines
that are much larger.

So, I am thinking of making my own.

does anyone have any suggestions on how to get something that will run
true ?

I was thkinking of just making a sleeve and put in some ABEC-7
bearings, then a ground shft with a set-screw shaft collar. They make
a precision 0.1248" collar (Stock Drive Products) that might work.

I'm also interested in the need for thrust bearings or angular contact
or some such.

Any comments or suggestions ?

Dave