On Friday 17 August 2012 09:30:45 andy pugh did opine: > On 17 August 2012 13:48, Stuart Stevenson <[email protected]> wrote: > > Some tapping heads will release after a set amount of extension of the > > head components. These heads also self reversed upon axis retraction. > > This allows the programmer to drive to a position - dwell to allow > > the head to reach extension and release - reverse motion to retract > > the tap. > > This seems to indicate a need for not one, but several, non-rigid > tapping routines.
Also I believe, it would be valuable to have a discussion of the various offerings, so that I for instance, who might have a need for tapping 40 each 6-32 to 10-32 holes to a depth of perhaps 1/2" occasionally, might stand a chance of actually buying something that works better that I can do. So far as I know, no mechanical tap driver can do that, the 6-32 needing several reversal extraction cycles to clean and re-apply the cutting oil if any hope of reaching that half inch depth with full thread depths is to be expected without broken taps by the pound, and the associated lengthy edm sessions that involves when trying to save the part. IOW if this "brand and model" works, and "that one" doesn't when used by competent machinists, is one of the least accessible bits of info, and in my reading of the Handbook, is not discussed in depth sufficient to lead one to purchase the best tool for the job. Perhaps a few entries in the Contributed section of the wiki might be in order if it could be done in a manner that precludes legal action by the maker of a particularly poorly performing such device. BTDT. PIMA. 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) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! Not SENSUOUS ... only "FROLICSOME" ... and in need of DENTAL WORK ... in PAIN!!! ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
