# Thread: circular interpolation point of view?

1. ## circular interpolation point of view?

Hi there,
I am trying to do circular interpolation between the vertical and one of the horizontal axis. My question is, which way are you looking from when you do clockwise and counter-clockwise? Are you looking towards the negative or positive axis? For example, if I want to traverse a semi-circle "smile-oriented" shape between Z and X with radius 1, if I'm looking at it from the positive X axis it would be:

G01 X1 Z0
G02 X-1 Z0 R1

If I'm looking at it from the negative X axis, it would be:

G01 X1 Z0
G03 X-1 Z0 R1

It's pretty intuitive when you're interpolating between X and Y to look downwards, is it the same for X and Y? Thanks

2. Are you looking towards the negative or positive axis?
Looking in the negative direction.

3. Originally Posted by lagfish

It's pretty intuitive when you're interpolating between X and Y to look downwards, is it the same for X and Y? Thanks
Yes, looking from positive, as ger21 put, looking to the negative..

BUT, do not forget to change the working plane. G17 for X-Y, G18 for X-Z, and G19 for Y-Z

AND, working in X-Z, you mean looking at it toward negative Y

4. Got it.
Thanks for the reminder about working plane - I was wondering about that.

5. And the coordinate system follows right-hand rule.