Speaker To-Dirt wrote: > Jon you understand me totally. You knew I'd want to embrace the maximal > complexity and make the problem hard. So what I REALLY need is a tip-tilt 4th > stage, a .... 5 stage system. Am I out of signals on the parallel port? My > computer is off in the shop so I can't check right now, but I'll look into it. > You can always add another parallel port. > Which raises a materials question then. Do people have much experience > machining cast iron? I understand steel sings under load and there's no way > Al can take the kind of loads a gear cutter would undergo. Would an Al 'skin' > with a steel 'skeleton' work out? > Cast Iron is easy to machine, but a bit messy, black dust flying all over. I don't understand your reference to Al and gear cutting loads. Generally, unless cutting gears in production on a horizontal mill, you take it slow with several light cuts per tooth. Aluminum is a horrible material for gears, it galls rather than sliding. Use brass, steel or cast iron, or even plastic (Delrin). > Anyone know a cheap source for tailstocks when I would run this thing in > strait rotary stage? > The tailstock is basically an angle bracket and a tube that can clamp a bar with a point on the end. Look online and see if you can find a picture of a tailstock for use with a dividing head. They are quite simple and could be easily made in the shop.
Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
