On Sunday 03 May 2020 15:09:51 dave engvall wrote: > HI Gene, > Being always caught outside the box but still having to think I made a > large t-nut that goes in the cross-slide, then a block of steel large > enough to accommodate a couple of 1/2" gr 8 cap screws and a hole > centered between the bolts but obviously at 90 degrees with the proper > taper for a 5C. > The collet just hangs out the rear of the block and I can clamp up > boring bars of varying size using a bronze nut threaded for the rear > thread of the collet, > Naturally I ended up making a wrench to fit the nut. Nothing is ever > easy. :-) YMMV > > Dave
Something along those lines has crossed my mind, whats left of it, Dave, but that would involve a change in tool mount as one like that, or the qctp was interchanged. I want this to drop onto the qctp for a consistent offset I can measure and put in the tool table, so they must be in the 250-204 pattern for mounting repeatabiity. > > On 5/3/20 10:57 AM, Gene Heskett wrote: > > But the odd size is 7/8" because that is the size of the brass rod I > > made about 100 tap hats from. > > > > This is to go with the gcode I've written to stop broken taps > > forever. > > > > I'll need to dedicate a 3/4" to lock a probe into forever, because thats the size of the teflon I have to make the probe contact insulator from. Or I've some black delrin about 1.25" OD I could machine one from that I just now recall having. I've not measured it but I'd assume its an insulator enough to serve as a probe holder. > > and a > > matching 7/8" to hold the tap-hat in. > > The one bar holder I have, came with the qctp kit is a 250-204, is > > 3/4" with the sleeve or 1" without it. And side of tool wedging > > screws, which I hate because they damage the tools if tightened > > enough to hold the tool. I'd druther have a good fit and draw screws > > to squeeze the steel across the gap. I made one sorta like that for > > the 7x12 many years ago but that doesn't give me the qctp's fine > > veritcal position needed for this. > > > > Banggood doesn't have, Shars doesn't have. Am I going to have to > > make them? > > > > What I need is 7/8" that I can mill a shallow antirotation notch in > > the edge of to engage the 4mm cap screw inset into the side of the > > tap hat. > > > > Cheers, Gene Heskett I'll figure out something, eventually. > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
