On Wednesday 07 March 2018 06:57:58 Erik Christiansen wrote: > On 07.03.18 05:45, Gene Heskett wrote: > > On Wednesday 07 March 2018 02:00:46 Erik Christiansen wrote: > > > To go in a collet, you wouldn't need the fat splined adapter to > > > take the die holder. I can take this one off as it's only held on > > > with grubscrews. Two of the four tap-gripping grubscrew holes can > > > be seen half way up the tap holder body. > > > > And you intended to make one for every tap size you commonly use? > > > :-) That's why the adaptor for the die holder is only attached with > > grubscrews. Four or five 1/2" holders, one for each tap that I use, > then drop in to one adaptor. And the holders are quick to make. (I > have some zero rake carbide tipped drill bits. Medium fine brass > granules just pour out the flutes of the horizontal drill in a golden > river, without any need to back out before it's done. And you can feed > at a most gratifying rate.) > > I'll have to buy some larger brass bar for holders for 8 mm and up, or > just use steel, which isn't as much fun. > > Erik > I have an ER-40 kit that will pass a 7/8" rod, maybe even an inch, but my R8's quit at 7/8", so I just ordered 6 foot of 7/8" #360 brass rod. Now I need to round up grub screws, and some short 3mm cap screws as I am going to sacrifice a 7/8" R8 by grinding a notch in it for the head of a 3mm cap screw seated deep. Since the R8 is pinned, why not pin the adapter? And with 7/8" of brass, 3mm grub screws ought to get a decent grip on the taps butt for smallish taps. For bigger taps, increment the grub screw. Figure the grub screw diameter as close to the width of the flat w/o exceeding it.
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Straight flute drill bits sound good too. But I've not acquired any of those yet. :( But they are on my wish list. And maybe add a couple lincurves and offsets to the mill, keyed to a home switch on the table that doesn't exist yet. That should keep me busy... Better yet, make a jig to bore the grub screw holes. I like that better, as this 4" table, even with a motor on it, is a P.O.S., with little or no ability to center a 3 jaw thats mounted on it. Sitting here, watching the snow coming down in BIG flakes at a 45 degree angle, but not sticking yet as its 36F, I don't think I'll go see the Missus today as she just called and warned me to stay home. So I guess I'll go fix a bite, and call it breakfast. Thanks Erik. -- 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
