OK, if I have this right, you have a hemisphere of thin aluminum mesh.
You also have a cylinder of foil (.2mm) that you want to join to the
cut edge of the hemi.
You are going to heat this above 500 f, ruling out epoxies.

?? How hot are you going to go?

You need to make a few thousand.
Strength is not an issue.

The following are some thoughts:
Spot welding
Rivets
Aluminum Solder (depends on question above)
Electron Beam welding

If this assembly looks like a cup in a tube, then crimping.

My worry is strength, and the direction of forces, any further info
might help.
Dave




On Feb 4, 11:38 pm, Dimi Shahbaz wrote:
As far as thickness, I think that's a problem. I want to use regular
commercial aluminum foil, so 0.2 mm thickness. The diameter of the
mesh will be 3", the foil will extend past that a few inches. If it
can be made in the thousands, that would be ideal, and preferably at a
low cost. Non-corrosive metals other than aluminum would be fine as
well, if the process is easier.

Thanks again

On Feb 4, 10:05 pm, Mechanical Magic
wrote:

There a number of ways.
If your materials have sufficient thickness they can be TIG welded.
Thin materials can be furnace brazed.
For low temperature applications there are solders for Aluminum.

How about giving me some numbers, dimensions, and the quantity, is
this a thoudsand or a one off?
Dave