Maintaining a plastering trowel isn't rocket science-it's just about doing small, regular things to keep it in good shape. I've got a few trowels that are years old, and they still work like new, all because I follow this simple routine. Let's break it down so you can keep your trowel in top form too.
First, clean it right after use-we talked about this before, but it's worth repeating. Wet plaster dries hard, and if you let it sit, it'll ruin the blade. After you're done plastering, dip the blade in warm water, scrub it with a stiff brush, dry it immediately with a rag. But maintenance isn't just cleaning-you also need to prevent rust. Even if you dry it, a little moisture can sneak in. So after drying, wipe the blade with a light machine oil (like 3-in-1 oil) or even a little cooking oil (in a pinch). Just a thin layer-you don't want it greasy. This keeps the metal smooth and stops rust from forming. I do this every single time I use my trowel, and I've never had a rust problem.
Then, store it properly. Don't just toss it in a toolbox with other metal tools-they'll scratch the blade. Either hang it up by the handle (a simple hook in the garage works) or wrap the blade in a soft cloth before putting it away. Scratches on the blade might not seem like a big deal, but they'll leave streaks in your plaster. Trust me, I learned that the hard way when I scratched my first trowel on a hammer-every pass left a line, and I had to sand the wall for hours.
Also, check for damage regularly. Every few uses, look at the blade-are there any dents or bends? If it's bent, you can gently straighten it with a pair of pliers (but be careful-don't overdo it, or you'll break it). If the handle is loose, tighten the screws. A loose handle makes it hard to control, and it can even fall off mid-job. I once had a handle come loose while I was plastering-plaster went everywhere, and I almost dropped the trowel. Now I check the handle screws every time I use it.
Maintenance is all about small habits. Do these things, and your trowel will last for years. It's way cheaper to take care of the one you have than to buy a new one every few months.
plastering trowel from hanke tools
