Aluminium cutting

[JAZZCNC]

Try this for a one off fee. http://www.mycncuk.com/forums/comput...html#post57489

Other than that then can't help as I tend to use rule of thumb and my ear or occasionally I'll use G-wizzard.
Google can be your friend sometimes.

To be honest your best approach is to setoff of slow and find your machines sweet spot and only way to do this is thru trial and error. Like I said doesn't mean my settings or anyone else's will work well for you or your machine so your best finding the limits of your own machine. Unfortunatly the price can be a few snapped cutters.

Best tip would be set your best guess for feedrate and spindle speeds then use feedrate over-ride to lower and setoff slow to judge how it's cutting. Between changing feedrate and spindle speeds it doesn't take long to find the machines sweet spot. Then start tweaking the DOC when you feel more confident and have a feel for the machine's/cutters limits.

[Washout]

For single flute cutters I'm using APT www.shop-apt.co.uk - they are more expensive than some of the ebay sellers, but I'm finding the quality and longevity much better - I wouldn't recommend it but I managed to cut my finger by clumsily taking the plastic cap off of an APT cutter and brushing the edge, whereas a batch of ebay cutters were no where near as sharp - I'm not sure that the correct way to test cutter sharpness however ;-)