Originally Posted by Aquabelle
Care to expand on that? I'd bet a few of us would appreciate learning how best to tackle this job.
If you want permanent screens, you can remove the port, stretch the screen across the opening, fasten with staples, super glue, etc. Apply bedding and remount the port.
To make removable screens, make a frame from a brass or bronze rod of about 1/4" and bend to fit. With good measurements, a good sheet metal shop can machine bend the rod. With the finished rod, soldier the gap, and make temporary internal braces, usually wood, so the stretched screen doesn't pull in the rod. Stretch and attach the screen with super glue or soldier.
For a better screen make the rod frame about 1/4" smaller in both directions. Split an 1/8-1/4 vacuum hose and wrap the rod.
Some people make a varnished wood frame.