Doug,
As there's no G20 or G21 then Mach3 will just run with the unit system you've manually chosen.
I guess the first questios should have been
When did the router last cut to correct sizes?
Has the motor tuning in Mach3 altered since everything worked properly?
and
When did you you check and adjust the motor tuning?
Regards,
Nick
Thanks again for your time and patience, Nick.
I recently bought this second hand and it came with the software (licensed copy, Newfangled said that's ok). Mach 3 was set up in Imperial and the guy I bought it from said it works better in Imperial so I asked him why. He said 'Oh well, I just prefer imperial.' I don't, so when I got it all home, I downloaded all the Mach 3 tutorials and reset it all in Metric. In the process, I followed through the whole setup procedure as an exercise in familiarisation.
That being said, this is all totally new to me and I may have got some of it wrong. So, in answer to your question, the motor tuning has been done by me since I bought the router and could well be wrong.
I thought that the tuning would only get the speed and acceleration settings right, not the dimensions. It sounds like I'd better go through that process again. Perhaps I should have left well alone :-P
Is there a particular area in tuning that I should check?
Regards
Doug