How to mill an elyptical shape?

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Echesak - somehow I couldn't see your post when writing mine ,I think I have not refreshed the page for some time. That seems to be exactly the same idea :)
 
I've been a member for many years, following many builds. But since I have so few posts, mine are still under moderation/approval. So I believe that my reply was just delayed in this process. This milling technique worked well for the laser cavities. With my crude machining skills at that time, I had to do a significant amount of hand sanding & polishing. But better tooling and more patience has since provided me with better surface finishes :)
 
But since I have so few posts, mine are still under moderation/approval. So I believe that my reply was just delayed in this process.
Only your posts with embedded links will be sent to the moderation queue, so 'normal' replies won't be affected. Once you hit a certain post count the auto moderation will disappear.
 

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