In Part 3 of this video series on making a plug, Stephan is fairing the fiberglass on the foam to get the form just right so he can get a perfect mold off of it. Using TotalBoat's Total Fair Epoxy Fairing Compound, you can easily fill and smooth out any imperfections without a tons of difficult sanding.
Use this video to make your own plug for a mold for any kind of part. Ask us your questions below and we can help try to translate this for your own project.