Quote Originally Posted by luke11cnc View Post
Jonathan I didn't get a finished photo so maybe you could post some??
Here it is, along with the rest of the bits I've just done:

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All done with single flute carbide cutter and 1mm DOC. The first part at 540mm/min and the rest at 600mm/min. Due to the aluminium bar not being flat (even though it's called flat bar!) the cutter on the first pass went up to about 2mm depth of cut at the same feedrate. It was still perfectly happy at that, though a little more noisy. The line on the edge of the first of them was caused by a chip in the cutter. For the rest I was going to use a new cutter, but due to negligence on my part (putting a screw where it was going to cut) it got smashed so I put the original cutter in, and for no apparent reason the machine decided to go and machine a different screw which subsequently melted with lots of red sparks! Hopefully I can regrind that one into something useful as only the last 5mm or so is bad. After that I put the last one I have in which I have reground by hand twice, so the above parts are done with that. Quite pleased that it has still attained a nice finish.

P.S. Is it just me or is the aspect ratio wrong on your video?