Traditional brown shellac sealer, normally used by furniture restorers to stain and seal timber but is mostly used in the SFX industry to seal plaster casts
 
it is a specially blended and tested for optimum performance (without dilution) to seal plaster casts before taking plaster moulds from them.  
 
Can be thinned if desired with the addition of our Methylated Spirit, but doesn't thicken well. If you like to adjust shellac to your own requirements, you need the Mylands Pure Shellac Varnish M400
 
Please note: Please ensure Shellac does not come in direct contact with silicone or fibreglass when mould making - it'll stick very well!!