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Step 8Apply First Resin Coat
Okay, I lied - but only a little bit. This batch of thickened resin will be applied with brushes to the surface of the plug. We don't want to tear the vinyl film we sprayed down, so apply almost no pressure.
I say I lied a little because this coating (similar to a gel coat) will hide some mistakes (like minor PVA runs). This coating is what makes the finish closer to a glassy smooth.
Application
We're using "throwaway" 3" brushes. Apply liberally in a cross hatch motion at first. You want to get an even coat over the entire plug (half). At the seam where the plug intersects the MDF - build up a little bit of resin. This will help the fiberglass to transition from the plug to the MDF to make a flange. Keep in mind though, that AIR is a BAD BAD thing. So pay attention to any bubbles the form and remove them with long brush strokes.
Now, you'll notice that some areas have a kind of textured look. To remove that, use long fast brush strokes over those areas and the resin seems to re liquefy (it doesn't) and the texture goes away.
For this half of our plug, we applied 3.5 quarts of resin mixed with Cabosil. 3 probably would have been enough, but it's better to have extra than not enough ;)
REMEMBER: Once you mix your catalyst/hardener into your resin - the clock is ticking, there is no time to stop - proceed to the next step.
I say I lied a little because this coating (similar to a gel coat) will hide some mistakes (like minor PVA runs). This coating is what makes the finish closer to a glassy smooth.
Application
We're using "throwaway" 3" brushes. Apply liberally in a cross hatch motion at first. You want to get an even coat over the entire plug (half). At the seam where the plug intersects the MDF - build up a little bit of resin. This will help the fiberglass to transition from the plug to the MDF to make a flange. Keep in mind though, that AIR is a BAD BAD thing. So pay attention to any bubbles the form and remove them with long brush strokes.
Now, you'll notice that some areas have a kind of textured look. To remove that, use long fast brush strokes over those areas and the resin seems to re liquefy (it doesn't) and the texture goes away.
For this half of our plug, we applied 3.5 quarts of resin mixed with Cabosil. 3 probably would have been enough, but it's better to have extra than not enough ;)
REMEMBER: Once you mix your catalyst/hardener into your resin - the clock is ticking, there is no time to stop - proceed to the next step.
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