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That's not fair.

We're not asking anyone to do the designing, that's been done, prototypes made and proven.

We're hoping to meet somewhere in the middle between hand made parts and machined...

Hi Roger,
Jigs not required - we've already machined these items on a small tool lathe where our EE even made a tiny tool to machine the 1mm grooves in the top of the feed, so we know these items...

Hi Roger,

Yeah its because these are operating at 122GHz where surface roughness becomes a loss inducing concern.

At 100GHz the skin depth of the signal in Aluminium is 0.28um, so the Ra needs...

I need to revise the quantity
10 couplers
10 Chapperal feeds
2 large horns.

Additional detail just supplied by our designer

Material = Aluminium 6082 T6 AL6082

Interior surface roughness...

Its an attachment at the bottom of the post.

Hi all,

I'm working on a RADAR project that requires tiny aluminium feed horns.

The zip file enclosed gives the mechanical detail.

The info is all there but it's buried in different places....

Hi Ian,

I'm getting this one...
CNC X4-800 ROUTER ENGRAVER DRILLING AND MILLING MACHINE - carving-cnc.com

regards
Tim

G'Day all,

Tim from Australia here :) I'm a computer engineer for a large company and I've always dabbled in electronics and done a few PCB designs of my own. Completely over the Ferric Chloride...