On Monday 21 September 2015 10:57:04 Jim Craig wrote: > On 9/21/2015 9:45 AM, Gene Heskett wrote: > > Greetings everybody; > > > > Thinking in electronic ink here... > > > > Is there a quick & dirty but adequate way to extend the 2 most > > common carbide bit sizes in my collection in order to gain clearance > > between the workpiece and its holding jigs? Something like an ER8 > > that I can plug into an R8 maybe? > > > > What would be a good google search term? Or just hit Tormach's > > site. Their ER20 adapter covers up to 1/2", and sells for $34.95. > > Tolerable good. And it looks like it would extend the reach of a > > tool by at least 1.5". Thats also good, gets the quill housing up > > high enough to clear the jigs. The 15 count collet set is $192, or > > the 30 count set is $372, probably more accurate than some of the > > others, but hey, I'm carving wood here. > > > > Grizzly wants $317 for the whole 16 piece kit including adapter, > > South Bend brand. Neither seem to say what the OD of the nut is and > > I've already hit the side of the spindle against this jig when it > > was on the toy mill, whose rotating spindle nose is 40mm. > > > > But I hit a lick at LittleMachineShop. Tormach adapter & 3 collets, > > 1/8, 1/4 & 3/8, for $72.95 shipped. That will or should cover 98% > > of what I'll be doing. > > > > In the meantime I can make a new holddown bar for this jig out of > > solid maple, and set it about 3/8" farther away from the tool > > travel. And maybe glue on an extension to the flat plane of the > > front of the jig for additional workpiece support as some pieces > > will project close to 4 feet off the front of the table when > > mounted. > > > > Todays projects. ;-) Keeps me out of the bars don'tcha know. ;-) > > > > Cheers, Gene Heskett > > Plain old R8 collet in the spindle would gain you the most headroom, > but you would loose your tool length offset each time you did a tool > change unless the tool has a depth collar on it. > > Jim
You cannot let enough tool project from the R8 to make that practical, Jim. Some of this jig is 2" taller than the 1 by Mahogany being carved is tall. The spindle brake, mounted on the quill housing makes it all about 5" in diameter, plus the brake pin sticks out in front by about 3/4". So I must have a fairly rigid 1.5" or more extension which it looks as if the Tormach 3/4 spud R8 to ER-20 adaptor will give me enough to work with. It's at least 1.5" longer when seated in the R8 collet. And I moved the hold-down bar back from the work area about 5/8" from where it was before, so I am hoping that will give me clearance so the nut on the Tormach tool adapter won't hit the hold down bar. 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> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
