On Thursday 27 November 2014 01:56:44 Gregg Eshelman did opine And Gene did reply: > On 11/26/2014 11:12 PM, Gene Heskett wrote: > > On Wednesday 26 November 2014 23:11:00 Gregg Eshelman did opine > > > >> For the Mini Mill there's a belt conversion and there's metal gears > >> available for the mill and the 7x lathes. > > > > Metal, for the micro-mill? URL? > > > > Chris has metal change gears for the lathe, but I don't recall seeing > > any for the spindle internals on his site. Is my mouse not aimed > > correctly? > > Under conversion kits. No metal gears for the Micro, just for the mini > mill and 7x lathe. > > Since it's apparent the belt conversion for the Micro Mill isn't coming > back, anyone who wants that will have to build their own. > > Are the plastic Micro mill gears standard metric or are they some > proprietary "just about right" dimensions? If they're something > standard then a call to Boston Gear should get you something you can > modify to replace the originals. At least you know they can't be the > unobtanium 14 DP. > No clue Gregg. I have a bag of 3, missing of course the one that always wobbles out its hub & keyway.
I have some fairly hard, 1/2" alu stock, wide enough to make the sandwich, and could probably make one similar to the mini-mill version IF I could afford the timing gears. I would in that case, put one of my lathes encoder wheels on top of the spindle, and make low gear low enough to drive a tap for rigid tapping. And I'd probably swap that 200 watt motor out for the 400 watter I took out of the lathe at the same time since the mounts are quite different. I had the hexfet in the OEM controller fail several years ago, and replaced it with one from a computer PSU, and I think I could use a 6 amp fuse instead of the way to easy to blow 3.5 amp in it now. But in mounting a big slab of white ash to the table yesterday, the beginnings of a jig to carve the huge box joint fingers to make that blanket chest on the front cover of this months Fine WoodWorking, I discovered a startlingly large amount of backlash in the Y axis, so I expect my next move is to remove the tables as an assembly, so I can get a set of o-ring pliers into the nut holders and tighten them down some more, the felt padding I put in for a lubricant reservoir, seems to have collapsed. Perhaps the Chinese felt from an old Woolrich western style hat is degrading from the way oil I use via a small engine fuel line feeding into the nut housing from a manifold I mounted on the side of the post? Its other reason-de-exist was to function as the screws swarf wipers as I only made about a 1/4" center hole in the felt & forced the 8mm screw into it. There is a molded to shape, heavy white felt washer in the lathes z drives nut, both ends of the nut that is doing a great job of keeping the swarf out of the nut as that screw is not covered, so I used the same idea when I made the x & y nut holders for those teeny little 8mm ball screw nuts, using an old hat to make the wipers on both ends of the nut. I cut 32 tpi threads into one end of the nut holder, and made a disk a fat .125 thick to fit, threaded 32 tpi, drilled for the pins of a true-arc plier and tightened it to about 1/16 turn from broken cheap pliers. And it looks like I need to tighten that disk some more now. Not a job I relish unless I go get some more shots in my back first as that whole table assembly, slid out of the Y ways into my hands, is a good 80 lbs. And to replace it will take more hands than I have because I'll need one to hold the gib strip when feeding it back into the ways. Or clean it all up and goop that puppy in place. I tried that the last time I had it apart but knocked it loose and wound up getting Dee to climb the hill and hold it. With her COPD, that little 4 foot hill climb is not exactly on her list of favorite things to do. I don't recommend getting old Gregg, avoid it by any means available. Thanks & 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> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
