On Thursday 23 January 2014 09:13:54 Russell Brown did opine: > Quoth Jeshua Lacock..... > > >I figured backlash was common to just about all reasonably priced > >mills, and I was wondering what folks did with them to compensate with > >CNC. > > FWIW, I "cnc'd" my "WMD30LValike reasonably priced mill" using the > standard ACME screws thinking that backlash could be compensate for by > software and/or that the backlash wouldn't annoy me. > > Neither was true (cutting forces push/pull the tool around the backlash > envelope creating facets on the work) and I'm now in the middle of > retro-fitting ballscrews.... > > ...which I should have done in the first place; Gawd knows there's > enough advice on that there Internet saying 'just fit ballscrews'.
Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm and those nuts are 3x the size on the 8mm cartridge nut and screw that I got one of from Steve (PMDX) a couple years ago. There is not room for the 12mm screws I can get from asia in the micromill. So, come warmer weather, I'll see if I can make a suitable container for the thermally molded acetal nuts per that link I reposted yesterday. Cheers, Gene -- "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> NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Microsoft is not Y2K compliant: Windows 95, 98, ... and back again to 01 A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
