I've been looking into making my own Bandit signs I've brought all the materials such as the swing arm stapler and the plastic sheet the only thing i need left is of course the ladder mesh block.

Metal will plug and cause headaches 10X worse than white pvc plastic

At first I tapped drop cloths over the windows with finish nails complete with fancy little folds, but on my last house I used that white  painters' plastic and taped it to the exact shape of the glass.

@jd Martin, true copper is old school, but plastic fails, im just given my experience in the plumbing field, true prob not a heat line, but hey u never know I here the south is getting cold lol.

And my boots stuck to the plastic, and started pulling off the tape.

A local fire suppression company can recharge them however these type with plastic nozzles/necks can only be recharged and re certified for a certain amount of years (10 or less)"I will be calling the fire department tomorrow to have a conversation with them.

I have some of the $18 Adirondack plastic chairs that you can get from Lowes and HD.

Kenneth,My wife and I lived out in York Harbor for years, beautiful state.Try a plastic barrel that actually seals, I have seen them with an o ring, hinge and clamp.This may keep the moisture out better than a metal bucket.

When I do use the sprayer, I normally do the ceilings first with minimal masking (generally just a sheet of plastic over the windows, don't worry about overspray on the walls since you're going to paint them anyway).

Plug in any rate that you can imagine as your default rate and...you get the idea.That being said, I used plastic when I started.