[TowerTalk] Optibeam OBLY14-5

[Grant Saviers]

These guys could machine the 80m beam from billet.

https://www.mmsonline.com/blog/post/aluminum-material-removal-rate-new-world-record 
(in 7075)

All it takes is spinning the 63mm carbide cutter at 18,000 rpm driven 
with 295 horsepower.  It would take less horsepower in 6061 if you want 
to try it :-D.

Grant KZ1W

On 11/15/2018 8:53 AM, jimlux wrote:
>
> That's one advantage of machining stuff out of a solid block of 
> aluminum.  The properties of the finished product are very predictable.
>
> Unfortunately, milling a 80m Yagi out of a suitable monolithic billet 
> and then heat treating it is probably not practical for most 
> hams.<grin>. If someone wants to try, I'd love to come watch.
>
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