Many thanks for your help. You were right about the F command. When the g code was imported it did specify F1 hence the slow speed. Edited the code with F40 commands and it certainly speeded things up
![Grin ;D](https://www.machsupport.com/forum/Smileys/default/grin.gif)
. Just learning and testing at the moment so was using a pen and paper to draw on the platform as opposed to doing some milling. It turned out as I had wished but unsure on a couple of points.
Do you have to manually edit the G code each time or can you set Mach to the speed wanted?
When jogging between the lines being drawn I want to obviously set this to lift the Z axis after one part has finished and then drop again before starting the next part. Can I set Mach to do this upon importing the G code and if so how or can someone advise me how to manually edit the G code text to allow this?
I am running a seperate spindle tool not governed by Mach. It is 600W and runs at 30,000 rpm (without load). Any suggestions on on the feed rate for cutting (upto) 2mm aluminium?
Thanks again
Shamus