Re: G81

Forgot to mention that the circles in the Deskam tutorial were 0.25"
in radius (0.5" diameter)

What is the meaning of "empty circle" anyway?

Ed

--- In CAD_CAM_EDM_DRO@y..., edwardhall@s... wrote:
> Hi,
>
> Tried the drill tutorial in Deskam and wondering if others on the
> list are familiar with the drill tutorial?
>
> What is G81?
>
> If one is using a 5/16" drillbit, what does a command like the one
> below does?
>
> N100 G81 x0.4 Y0.2 Z-0.3 R0.1 F10
>
> The parameters given were
>
> Tool : 5/16" drill bit
> drill depth: 0.373
> rapid ht. : 0.1
> Tool dia. :
>
> The input for the tool diameter appear to be irrelevant as
> irrespective of whatever one input for the tool diameter, the above
> remains ....R0.1
>
> What is the significance of R0.1?
>
> Or other examples (not from Deskam) like
>
> N200 G81 R.50 Z-5
>
> N300 G81 V1=5 V2=-7
>
> What does these figures mean
>
> Thanks
>
> Ed