Re: cnc lathe/mill

the Grizley, Harbor freight and JET are all the same lathe.

the longer machine offers lenght. a nice plus.


check out all the options that come with and price them up seperatly.

make sure you list every feature you can. ask the 9x20 lathe list
for more comparisons.

Often there is one unit that offers so much more in options that it is
the best value.

Check shipping also. Harbor freight and use-enco might have better
shipping costs.

make sure the stand comes with or that you add to make it compare.

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "jak785" <jak785@h...> wrote:
>
> Hi,
> I am about to get a bonus at work, and this is my chance to get a
> lathe or mill and I want to convert it to cnc use.
> I like to play around with small turbine engines, and I want to
> start making my own instead of buying parts, so I need a lathe and
> mill, but right now I can only get one of them. Most of the parts
> are symetrics, so the lathe will probably be the better choice
> although with a mill I can machine all kinds of stuff. I found tons
> of information on retrofitting a mill for cnc use, but almost
> nothing with a lathe, so I was hoping you all could help me out a
> little.
> First lets talk about lathes.
> Can anyone give me some information on a good lathe with a size
> around 9"x20"
> Here are three I found that are about the size I need and in my
> price range:
>
> Grizzly G4000
> http://www.grizzly.com/products/item.aspxitemnumber=G4000
>
> JET 321373 BD-920N BENCH LATHE http://cgi.ebay.com/ws/eBayISAPI.dll?
> ViewItem&item=6003249800&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1
> or
> Lathemaster 9x30" lathe
> http://www.lathemaster.com/LATHEMASTER9x30Lathe.htm
>
> Can anyone give me an idea on which one would be better for
> converting to cnc? Also what size stepper motors would I need for a
> lathe of this size?
>
> Mill
> If I go with a mill, I was thinking about:
>
> RongFu31
> or
> Lathemaster mill
> http://www.lathemaster.com/HEAVYDUTYMILLINGMACHINE%207045FG.htm
>
> Does anyone have any suggestions on what mill they would get, or
> know of any other brands about this size. The taig mill is too
> small, and I don't want a huge knee mill either, so these are in the
> size range I want.
>
> Also about ballscrew and stepper motors
> has anyone ever bought ball screws from this site
> http://www.homeshopcnc.com/ , and are these stepper motors any good
> for the size I would need. I'm guessing around 600-1000 oz/in
> motors. I know ground ball screws are much better, but i dont got
> that type of money. any suggestions on this topic would be helpful.
>
> Sorry for all the questions, but I'm trying to figure out which
> route to go, and then what machine to get after I decide mill or
> lathe.
> -Jason
>