Quote Originally Posted by SPIKE View Post
Hi iv'e been looking at that video link you sent me and it is very informative and helpfull so thank you for that. As far as the DRO is concerned if i set the depth of say 1mm on the DRO screen yes it doe's show the -1mm. Here is an image of the GCS in use with a Coke sign which i'm working on.
Click image for larger version.  Name: gcs test 1.png  Views: 175  Size: 158.6 KB  ID: 29508G-CODE CNC BACKUP.txt This on is the setting of my cnc as followed per instructions of that tutorial video you showed me.
I hope this helps , i'm not sure on all the termanoligybut ill get there.
Thaqnk you freind Colin
Colin as I have said there is no point in trying to cut anything until the parameters are set correctly.

Now concentrate on the Z axis only .

Find a block of wood about 50mm thick put this on the table and Zero the Z on the top of it.

Then move the block out of the way and command the Z to go down 1mm the DRO should read -1

Then measure arcuately how far the Z travelled down from the top of the block and report back.

This is the line in your text file you posted that we will alter to get it right $102 = 1900.000 (Z-axis travel resolution, step/mm)