Lightly Sand Intermediate Coat

What happens here

After the first coat of primer has dried completely according to the manufacturer's instructions, lightly sand the primed surface once more. The presenter specifically mentions using an "Echoil medium sanding sponge" for this step. This intermediate sanding step helps to further smooth out any remaining unevenness or feathered edges from the first coat, ensuring an even smoother finish before the final primer application.

Goal: Smooth the first primer coat for a better finish.