RE: [CAD_CAM_EDM_DRO] Re: What cnc setup to buy for my sherline mill?

Don't worry. We will help you configure your software. It is pretty
straight forward for a Sherline as they are direct drive. So the steps
per inch is 20 (the turns/inch for the screw) times 200 (the base steps
per revolution on the motor) times the number of subdivisions in a step
you set the controller for (Full step = 1, half step = 2, 1/4 step = 4,
1/8th step = 8). So:
Full step (not recommended) 4000 steps/inch
Half step (better) 8000 steps/inch
1/4 step (even smoother) 16000 steps/inch and would limit you with
Master5 to about 30 ipm
1/8 step (smoother still) 32000 steps/inch and would limit you to about
15 ipm with Master5
In reality you may see a difference in performance between half and 1/4
step (maybe), but will probably not detect one between 1/4 and 1/8.

OK, next obstacle to letting us save you some dough? Heck I bet you
could get a number of list members to take you up on sending them the
mill, the parts, and the computer and getting back a running system for
$100 - $200. That is still a mighty savings over Flashcut and probably
could be done with a 1 - 2 day turn around. No, I am not offering as I
am already backed up.

Tim
[Denver, CO]

> -----Original Message-----
>
> Tim is right, I am not an electrical enigineer :-) I know if I had
> time there are lot cheaper ways I can go. But I am looking for a
> tool, not another "hobby". I really need to plug and play (I know
> it's not that easy). I am still worried about going the route that
> tim suggested because I still have to program the software I choose
> to know how many steps, revolutions, and all of that. The fact that
> flashcut is plug and play is a huge plus, but a 1k plus I don't know
> yet. I have been told that master5 is the way to go, but it is
> really picky on the computer you use and I would have to go buy
> another computer for the setup.
>
> I am looking at placing my order whichever way on monday, so I really
> appreciate everyones suggestions on all options.
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com
> to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>

http://groups.yahoo.com/group/jobshophomeshop I consider this as a
sister site to the CCED group, as many of the same members are there,
for OT subjects, that are not allowed on the CCED list.

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