I want a display base for my Congreve (rolling ball) clock to sit on. It will then have a perspex cover over it to protect it from dust and the environment. I would like to use a british hard wood of some type, oak would be my first choice, but I have heard that the high concentration of tannin (?) in the wood will cause corrosion of the unlaquered brass and steel components of the clock. Does anyone have experience of this, or can anyone recommend alternative woods - beech, ash, sycamore etc., Does varnish or wax on this type of base cause any problems? . .
MikeD