On Tuesday 29 September 2009, Andy Pugh wrote: >2009/9/29 Dave Caroline <dave.thearchiv...@gmail.com>: >> do you need one of use to make/cut a disk > >My machine has a milling head and a 4th axis, so making my own is >fairly straightforward (But thanks for the offer). >However I run the risk of doing a lot of machining and still having >exactly the same problems if it turns out that the paper encoder is >adequate and that the problem is elsewhere, or if I choose my encoder >resolution unwisely. > >The simplest solution would be to machine a series of slots in the >lathe spindle drive pulley face, I think. (my encoder uses reflective >sensors, I just need to check that there is enough contrast between >cast-iron and no cast-iron. > This is where the oscilloscope comes in, you can watch it and know for sure.
>My system seems to track a 50-line encoder adequately, would that >nromally be considered enough resolution for threading? -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> To find a friend one must close one eye; to keep him -- two. -- Norman Douglas ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
