CNC Basic settings for LimitnSwitches

[Keith1]

I am wanting to build a CNC Plasma Cutter and am getting the parts now. I thought X was the Front/Back Y was Left/Right and Z was Up/Down. Is that the way they are supposed to be or is the y supposed to be Front/Back? Also when is the Negative numbers and the Positive numbers? Is all the way to the back and to the left the negative numbers for X and y and all the way to the top the negative for z?


Thanks

[Al_The_Man]

There has been quite a few previous posts on this, search cartesian coordinates.
#11 for example here.
http://www.cnczone.com/forums/diy-cn...lding_cnc.html
Al.

[sld4121]

Virtually all CNC machines utilize the Cartesian Coordinate System.
You need to understand that first.
X is left and right, Y is front and back, Z is up and down.
Think of positive and negative values as where the cutter is in relation to the part zero.
Irregardless of whether the part moves or the head moves.