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27-11-2016 #11
That's really useful information, many thanks! The tool I'm using is the 2 mm one of these:
http://www.cutwel.co.uk/milling/mill...e-e5930-series
...so 3 mm shank. and 3 mm length of cut. Which might point to my mistake: I measured what I thought was the length of cut of the bit and it looked like 4 mm (I'm cutting to a depth of 3.8 mm in 0.3 mm increments) but from the manufacturer data it's only 3 mm so the bit would have been getting quite upset towards the end. The stick-out was 20 mm, as you have assumed, which was the best I could do to avoid clamps as I'm cutting quite close to the edge of the material.
Your video shows a rather impressive speed of cut. :-)
I have a spare bit, so I will try reducing the final depth of cut to 3 mm (what I'm doing is purely a test job anyway), increasing the speed to 30000 RPM and have another go with that bit, rather than risk breaking something more expensive just yet. I will also download HSMadvisor.Last edited by Rob Meades; 27-11-2016 at 10:14 AM.
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