Re: Spindle register issue
Unfortunately, if the shoulder of your backing plate is not cut correctly and making proper contact with the shoulder on the spindle, your results won't be very meaningful: the chuck could mount fairly repeatably on the spindle you ground the jaws on, even with the shoulders not making contact at all and just the threads being jammed. But, as soon as you mount it on practically any other spindle, it will be off. By using the unthreaded portion of the spindle to align the backplate (sorry, I won't call it a register, since it is not intended to be it), the backplate will be crocked the amount of play between internal and external diameter.toggle quoted messageShow quoted text
I agree with Jim that the shoulder on SB 9" is ridiculously tiny and that you need to make sure to cut a very sharp shoulder on the backplate.
On 6/21/2018 21:47, carbure2003 wrote:
I will do the experiment tomorrow night. I have 3 SB in the basement ( one is not powered, being in storage)