Companionway Slide | Preparing For Gloss

The companionway slide had received seven coats of white primer, and now needed to be sanded smooth in anticipation of gloss paint.

I started sanding outside in bright light, as here.

But I instantly remembered that an overhead light source does not reveal brush marks. We need a bright light source, level with and perpendicular to the brush strokes to highlight them by their shadows.

So I went back inside and sanded to a smooth finish with a P220 grit, like this.

It took me ages to perfect this technique - but now I know how to do it, it's easy and quick. Hooray!