Will soldering be an effective method for constructing a microwave resonator?

[Spurious J]

So I'm about to construct a TE102 microwave resonator from folded copper sheeting. I'm planning to fold a U shape and join it to the last side with silver solder. Is this going to work well?

I'm planning on making good physical contact through accurate folding, and then securing the pieces with the solder, not use the solder to electrically connect the two.
The resonator operates at 2.45 GHz and will be used at high power ~700watts.

I'm on a limited budget here and am looking for a simple solution that won't leak much power and allow for easy construction.

Thanks

 

[marcusl]

This should work fine. You won't have any leakage, and if the overlapping area is reasonably large, then losses will be low.