MDF, Polyurethane, Reinforced Papermaché
Papermaché Mix
(Rough measures, you have to experiment with the mix)
2 part wet/soaked Paperwool (from Dansk Papiruld – or similar)
1 part Ground Chalk
1 part Drywall joint compound (Polyfilla)
1-2 part PVAc Glue (White Carpenters glue)
½ part Nylon fibres
a touch of Linseed oil
option: add a touch of Clorine, or TeaTree oil, to stop fungus.
alternative recipe here