Ed Price wrote:

Remember to use "hardware cloth" for the screen. This material is galvanized
steel, and the galvanizing "solders" every crossover point. !/4" mesh is
fine for HF. Your problems will be the penetrations, as Mike described.
Also, you will need to bond the cloth to the aluminum. Soldering would be
best, but that would only work for a copper or tin-plated steel chassis. You
will have to clamp the cloth to the chassis, possibly using lengths of bar
stock with screws every inch or so. Don't forget to polish the aluminum area
that contacts the cloth just before assembly. Get it down to shiny aluminum;
aluminum oxide is an insulator, and you need good conductivity across the
joint.

Good point and thanks Ed! I was thinking of hardware cloth, and this
would give me a reason not to switch from it.

There will ba an access port in the shield, but I can design a recessed
portion of the shield to keep it continuous.

- Mike KB3EIA