Quote Originally Posted by RichardR View Post
Thanks Jazzcnc I used my digital vernier, which is not a cheap one and is accurate, it has to be when I am working on the lathe or any of the m/c engines I rebuild, I can assure you I did it as you said using the mach3 programme for measurment, I actually did the x axis and a axis three times and did test runs inbetween and the distance it moved was never spot on, it showed the correct distance on the screen but it varied by 0.12mm or near to that each time.
Ok well in that case you could have some backlash or play in the bearings which hold the ballscrews, It's not unknown for this to happen on these chinese machines as they use cheap bearings with a less than ideal method of fixing.

Quote Originally Posted by RichardR View Post
Ok did not fully understand the probe, just saw it being used on a urine video and thought ,oh that looks easy, but you know what thought did :-)
It's not difficult to get working but it's also not just simply case of plugging in a wire. When your ready we can guide you threw it and help with Macro code etc but I suggest you learn the manual method first.

Quote Originally Posted by RichardR View Post
I will take you up on your offer of help and will ask later, but ask if you can imagine me as thick, and explain things simply. Or in simple steps.
You've got this far so your certainly not thick but don't worry I'm used to helping new users and it's not as difficult as you probably imagine it to be.
Ounce you under stand the difference between the two coordinate systems, which are MACHINE coords and WORK Coords , and how they relate to each other it all starts to make a lot more sense.
Most of the time you are in WORK coordinates and the actual process of setting up and cutting a part is very very simple. In a matter of 1 or 2 min's from firing up the machine you will be cutting.

Quote Originally Posted by RichardR View Post
I was given a downloaded version of Mach3 by the Chinese eBay seller so never got the CD with forerunner and the other test programmes.
I will leave things as metric, having to input different codes to change things at the stage I am at will be a disaster.
Ok well this could be some of your problem.? These Chinese sellers are giving you pirated copies and very Old one's at that. What version of the software are you using.? you will find this info by going to the Help menu and ABOUT option. In there it will tell you the version number and the name of the license holder.

You can download newest version of Mach3 free of charge from Artsoft. It will function and run the machine but is limited to 500 lines of G-code untill you buy the license file.
If you do this I suggest you Rename the current Mach3 Folder to something like Mach3_OLD before installing then you don't risk losing your working setup.
After it's installed you can copy your settings over to the new mach3 by copying the XML file of the profile you used before and dropping in the new Mach3 folder. Or you can just setup a new profile and enter all the settings in manually.

Regards the Road runner G-code if you look in the Mach3 folder you will see another folder called Gcode, the road runner and a few other example files are in here. They have been included with Mach3 since time began and are part of the install so I'm sure they will be in your mach3 folder.