How to Mill a Round End on a Square Bar Safely?

[not done it yetParticipant @notdoneityet]

JB, Dunno what scale your pics are, but he is only starting with 18 x 18 mm.

[JasonBModerator @jasonb]

Yes but his part looks about 100mm long so the pivot pin won't rest on his vice jaws as the cuts get towards the end unless it is a very big one.

Edited By JasonB on 29/11/2016 19:06:38

[SillyOldDufferModerator @sillyoldduffer]

JasonB has a good eye for dimensions: the bar is 18x18x100.

I re-tried pivoting this afternoon with much better results. Turning the work into the cutter (not climbing!) and cutting a full semicircle from 0 to 180° was straightforward. In retrospect cutting from 90° to 180 and back to 0° was a daft thing to do. I wasn't able to try the rotary table: visitors stopped play.

Dave

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