Mill on ebay

[magicniner]

How much backlash is there on each axis?

[Hellfire]

On the z axis just over 0.03 mm

[magicniner]

What's the backlash on X and Y, and was backlash mentioned in the listing and have you measured the positional repeatability?

[suesi34e]

I only hope when you get it all sorted that you are happy with it. Perhaps the guy that sold it to you would do something about it.

[Hellfire]

The x and y axis aren't as bad, but with no ball screws it's going to need constant attention.
the guy won't help at all, I offered to pay for the ball screws etc and fit them myself if he machined them to suit the mill. No go.
he had it setup so the x axis referenced to the right. (Table move right ) never see that before on any mill.
what the hell is the point in fitting servos with encoders to a standard lead screw lol.
so the guy won't answer my emails or answer the phone, he has them on eBay as a classified listing. So no come back .

[lukecnc2012]

I currently have the same machine from the same guy I guess.ive had similar problems accuracy was out and still is. the mach3 licence was a copy.steps were out by alot.does yours reference to zero

[Hellfire]

I currently have the same machine from the same guy I guess.ive had similar problems accuracy was out and still is. the mach3 licence was a copy.steps were out by alot.does yours reference to zero

Mine dosent reference, he has the switches setup as home and limit. So when it hits the switch the machine goes into fault condition .
did you raise your concerns with him.

[lukecnc2012]

I sent a couple emails about accuracy as I was getting .1
And a couple over issues not being able to calibrate backlash etc.
The machines definitely need gas struts on the z had problems returning to z height on a job in the same place.if I can help with settings in anyway let me know .