[GreenKeys] [External] Re: Interesting Punch on eBay

[Jim Haynes]

On Fri, 24 Mar 2023, Jones, Douglas W wrote:

>
> It requires a change of timing belt and sprockets to change the speed. 
> The controller for each speed needs to shape its drive pulses 
> accordingly, and you also need to adjust the timing angle of the 
> feedback clock pulse (akin to fooling with the range finder on a serial 
> TTY).
>
Well, yes, but of course it can punch at any rate below what it is
geared for if you don't send it characters to punch.