SUP Plug: Step #5 Gel-Coat

The SUP's plug is getting close to the uniform surface we are after.  But from experience we know there are problems that are hard to detect.  One thing that really helps is to spray on a layer of gel-coat.

By giving the surface a uniform color and material, the eye has a much better chance of spotting problems.

With this first layer of gel-coat, we will add a tint color.  Pure white is just too hard to see differences in.    

We also added a wax sanding aid to the gel-coat.  This allows the surface to cure hard so it is easier to sand.

After this layer hardens, we will continue sanding.  What else.

Here is white gel-coat in spay cup and a concentrated
blue tint color we add.

Here are the cup gun parts.

Mixed, assembled and ready to spray.