Quote:
...has anyone ever put it on with a tile trowel and let harden then go back and fill the grooves?
|
I don't have much experience with fairing compounds, yet, but I expect to in the coming weeks. I've seen and tried the technique you're talking about. I used a serrated trowel to apply fairing compound to my fuel tank hatch and then used a sanding board to sand it to a flat plane. The advantage is that you're sanding less surface area because of the grooves. And you also have the flat tops of the trowel ridges to guide your flat trowel when you apply the next coat, so it should be very flat. The potential downside is that you could get cracking along those grooves later. I'm thinking I'll lay up a single layer of glass veil over it when I'm done to prevent cracking. If you're going to try it, make sure to use a trowel with notches or serrations no deeper than the maximum depth of your fairing compound. Otherwise, you'll be sanding just as much as if you'd used a flat trowel.
Dave