Clay Plugs

[muffinman67]

Do any of you guys have experience using Bondo to make clay plugs for the NOE plug mould. Any videos on it. I understand Sculpy is too soft, and I don't have a kiln to fire clay. how do you use Bondo?

 

[Sowbelly and Hardtack]

The gentleman in this video mentions the problem with using bondo.

 

[R. Porter]

What about wooden plugs?