Re: No more backlash!

--- In CAD_CAM_EDM_DRO@egroups.com, dave engvall <dengvall@n...>
wrote:

> Alvaro Fogassa wrote:
>
> > --- In CAD_CAM_EDM_DRO@egroups.com, Ron Ginger <ginger@s...>

wrote:

> > > I reassembled the mill and ran a few parts. There is no

backlash!

> > >
> > > Obviously I cant say anything yet about how long this will last,
> > but if
> > > it is half as good as the literture claims it will outlast me

by a

> > long
> > > time.
> > >
> > > Im going to do my Grizzley mini mill next.
> > >
> > > ron
> >
> > Ron, the lead screws that sherline uses are no better than 0.004"

per

> > foot,that's why they say on the instructions manual to set the
> > backlash nut no tighter than .003", other wise the nuts won't last
> > too long nor do the lead screws.
> > Now,if you can get a lead screw with let's say,0.001" lead

accuracy

> > per foot than it might work.
> > As for the grizzly,well...,if the lead screws on sherline aren't
> > that good,you guess it....
> > The ones on my grizzly,was so tight that it would turn ok at the
> > beggining but when it gets to the midle of the travel I've to use

two

> > hands to turn it. i'm shure it will turn easyer once the nuts

wears

> > out.anyway I'm not using the original screws any more.
>
> My Grizzly was not nearly that bad but certainly nothing to write

home about. Had a lot more trouble keeping the gibs in the right

> place. Finally modified the lock so they would stay in one place.
> In the end I bought at auction a Cincinatti (60's

vintage) "countormaster" (sans contour stuff) but with servo motors
for less

> than the original price of the Grizzly. :-) Even well used the

Cincinatti was tighter and stiffer than a new Grizzly. Sorry for

> the cold shower but this is simply my experience. If on waits long

enough and has cash in hand some really usable equipment shows

> up.
>
> Best of Luck,
>
> Dave Engvall
>

Well,I can't have a 600 pounds on my living room,I'm shure that if
I look for it I 'll find a bridgeport type milling machine for well
under $1000 bucks,But as many others I live in an apartment and there
is still a need of space for my kids to move around :)

>
>
> >
> >
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