On Wednesday 01 November 2017 12:30:20 andy pugh wrote: > On 1 November 2017 at 15:53, Gene Heskett <[email protected]> wrote: > > Now I have additional switches to make work to control it, in > > particular I'll use 2 switches and 2 mux2's in the end so that motor > > commands are blocked if the knob is not properly homed in one > > position or the other. > > I would suggest a single mux4 instead (set to output 0 for 00 and 11 > at the switches)
I'd forgotten we had that, good idea as it also gets rid of a sum2 to pass the output of the two mux2's to a single path to the motor. The backing plate, due in friday, also fell out of the little white USPO van today. The registration ring will need reduced by about 1/4 inch, and new bolt holes will need drilled & tapped. Expected when the backer is by Shars, and the chuck is a Steelex with a shop fox logo on it. Drilling and tapping those 4 bolt holes will test the G0704 as the bolts are 10mm's. Looks like 1.25mm fine thread, but will measure for sure. I know I've an 8x1.0, but not sure about the 10x1.25 without taking inventory. It might be a 1.50mm tap. Shars who made this plate, included a spare catalog, and I note their tapping arsenal does not include a way to grab a tap by the square on the end of it with an r8 key stub on the other end. I wish there was a std size for the rear of a tap. But in 15 lbs of assorted taps, I doubt it a lot if I have 2 with the same square butt stub size. And getting a truly non slip grip on one of them in an er32 collet is often very frustrating. Particularly when you note after the spindle has started, the tip of the tap is going in 1/16" circles because the tap wasn't ever straight in the first place. So boring and tapping the new holes will probably discolor the garage air. But first make the register fit so I can use the chuck to locate the new holes, the whole bolt hole pattern is out of square by about 25 thou means the first thing I do after making the register fit, is put witness marks on everything lined up with jaw #0. But at that price, I don't think they would ever bother to polish the sow's ear. And while its well finished, its not that precisely made. But its a 4 jaw independent, so who's got a quarter to call somebody who actually cares? I don't... :( Thanks, Andy 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
