11-19-2017, 11:19 AM
(11-19-2017, 09:45 AM)NTomG Wrote: As the others have pointed out, the "rookie mistake" is using an end mill the same diameter as the slot you intend to mill. Use one slightly smaller and climb mill for the finish pass. Here's a video I made on climb milling vs. conventional milling and how it affects the surface finish.
Tom
Ok, two conclusions for me, the slot machining, did use a tool equal to the width. The step technique demonstrated, the step depth was constant, the milling was to form the width....
I was doing it backwards rooky, had the width constant and milled to the depth.
Thank you
While I'm thinking about it, the piece you are milling, is alum. You mention that if not making the demo, you would mill @ 400 rpms, tool 7/8.
I have a chart, that basically says the same for steel, then is small print it states, alum, cast iron & bronze dived the speed 1/2. ?
Not saying this is correct, cause I always side on the side of experience, so I'm questioning the chart.
Greg
Magazines have issues, everything else has problems