Quote Originally Posted by Hellfire View Post
Any way the machine isn't capabile of 0.01 accuracy as stated in his ad
It might be worth mentioning here the vendor's ebay username, his town might help in case he opens another account in order to lose his history with the current one, he might assist his previous customers if prospective ones start asking all sorts of awkward questions about his wares ;-)

If you paid via paypal and they aren't interested but the transaction was funded with a credit card you can still talk to your bank about fraudulent mis-selling and get them to reverse the credit card payment which will such the money back out of the vendor's paypal account, leaving it negative if he doesn't have a balance.

You should report him on the Mach3 support forum for selling bogus licenses, they take a fairly dim view of this and given the very reasonable licensing cost it does make him look rather unscrupulous.

On the subject of setup Mach3 you can use one switch as limit and home without errors when homing. Mach3 also has backlash and leadscrew mapping compensation settings which would probably at least get you going, adding an automated oiler would keep wear to a minimum.

If you want to take some of the vertical load off the Z screw it's worth considering a cheap and easily set up pulley and weight arrangement, leave a few pounds of load on the screw though.

- Nick