On Sun, 2012-02-26 at 15:13 -0500, Dave wrote: > I'm not meaning to be a joy killer, but have you looked at the encoder > wheels that you can buy from places like US Digital? > > The seem really cheap to me at $18 for a qty 1 - 2" diameter disk > including a hub. Higher volumes and the prices drops quickly. > > I bet if you call them they will tell you how they make those. They are > pretty open about their technology. > > Dave
I want a 3" encoder to go on the end of a ballscrew like this one: http://www.wallacecompany.com/machine_shop/bridgeport/00047-1a.jpg My guess is that US Digital would charge a fortune to make a custom disk. Once I get the system worked out, I can make as many as I want. My guess is that they use film because the US Digital disks I have, seem to smear or get tacky like film if I get moist fingers on them, which I very much avoid doing. I have a motor with a mirrored and etched glass encoder disk. I think it's one of the sexiest things in my shop... besides me of course. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
