RE: [CAD_CAM_EDM_DRO] maxnc/sherline

First off Taus, welcome to the list.

My first CNC project was a conversion of a Sherline mill I had at the time.
I used the Camtronics 5 amp driver (serious overkill, but I was trying to
anticipate future needs) and 135 in/oz motors. It worked great and moved the
Z axis at good speed without any counter balance. So, if you use 180 in/oz
motors you will have more than enough power based on my experience and if
you add a counter balance you will be even better off.

Tim
[Denver, CO]
http://www.ktmarketing.com/CNC.html
my CNC and Shoptask web pages

> HI everyone, I am new to the group and want to thank everyone for
> such great posts! I have been reading as much as possible and have
> been learning very much! While I am a beginner CNCer I would like to
> comment on a few things.
>
> I have a sherline 5410 mill (the metric version) and I bought the
> sherline stepper motor mounts. I can say they are of GREAT quality as
> everything I have bought from sherline has been. I am very pleased
> with there fit and looks. They also include another Z-axis leadscrew
> that has the mount already placed. Very nice quality.
>
> I am also trying the MAXNC 3 axis 70 oz/in stepper motors on the
> sherline mill (borrowed from my brother) using the Maxnc pro software
> and I can say that it does NOT work. I have found no way, as maxnc
> says, that the motor has enough power to lift the "9ish" pound head
> of the sherline mill. I have spoken with the techs at maxnc about
> there "retro-fit kit" and they say it works fine on there sherline. I
> have setup the motors as there (terrible!!) manuel suggests and am
> using the Maxnc 10 driver board with a 2 amp power supply (they say a
> 1 amp is enough).
>
> As we tried to figure out why their sherline Z-axis moves up and mine
> does not it came down to the leadscrew. They use a 1/4-20 leadscrew
> in there retro fit kits (which must be tiny!) and I am using a 10mm-1
> leadscrew that came with my sherline stepper kit (the inch machine
> would come with a 3/8-20). Does this sound right? Would these two
> different leadscrews (mine being metic and differnt pitch) make it so
> the two machines handle differently?
>
> I would be interested in speaking with anyone that has made the maxnc
> 70 oz/in motors work on there sherline 5400 mill, especially the Z-
> axis.
>
> ANYHOW,
>
> I am thinking of getting a Camtronics 3 axis 2amp board and getting 3
> 180 oz/in 2amp bipolar motors...I feel this should fix all of my
> concerns. What size motors are other people using on there sherline?
> I saw the page where (I am sorry I forgot who) made a counterspring
> for the Z-axis and it looked GREAT! I will look into making one
> myself!
>
> THANK YOU AGAIN Everyone!
>
> taus
> sherline 5410 mill