Sow's Ear

[cropwell]

I have since done some testing, in the form of a project, two plates cut out of ali. Once I got the feeds and speeds right, it cut well, using a 2mm single flute open architecture cutter from Sorotec. Just blowing the chips away with air, no coolant.

The Chinese cutters I tried either chattered horribly and produced a poor finish to the cut or just snapped.

The finish is done with a dremel steel brush at a slow speed, 0.4mm DOC pocket and WD40.