This function has just been added to emc in the last few days. It isn't 
available yet in a package but you can install it from source. 
<http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2#Getting_the_source_with_CVS>

G7 switches to diameter, G8 is radius.

Les

The Cool Tool Ltd - Ing. Alexander Pasicznyk wrote:
> Hi guys,
>
> I have one question about the EMC2 lathe function, or better of the G-Code
> programming for that.
> Many other controller systems use for the x axis value the diameter of the
> part, not the radius.
> If I use the diameter value at the EMC2 than I get in troubles:
> 1) The part is to big 20mm diameter is for EMC2 40mm diameter because 20mm
> radius. This problem is not so big, because here I can change the Input
> Scale of the x axis.
> 2) But this don't work if I use G02 or G03, because of the I and K value.
> The don't fit to the x value, attached you find a sample file
> (2_Stufenbolzen_unimat.nc).
>
> At the moment I must program this part at the EMC2 software like file
> Radius--2_Stufenbolzen_unimat.nc
>
> Please can you help me, how I can solve this problem?
>
> Best regards
>
> Ing. Alexander Pasicznyk / technical support & QS
> The Cool Tool  GmbH
> Fabriksgasse 15
> 2340 Moedling - Austria
> phone +43 - 2236 - 892 666
> fax +43 - 2236 - 892 666 - 18
> e-mail  serv...@thecooltool.com
> Please visit our website  www.thecooltool.com
>   
>

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